Getting Modbus comms going to Sungrow S100 power meter

(Sat 25th Jul 2026 16:42) 

It is working over RS485 to the SH3.0RS over two wires (A,B). But the CT sensor needs to be between the consumer unit and the ESB meter clamped on the live wire the correct way round. Otherwise it won't know how much energy from the inverter is being consumed within the house.

My plan is to relay this information using ESP32 devices.

The first step is to capture th current comms between the inverter and the S100 meter. I'm expecting the inverter to be sending read commands every few seconds to the meter to which it responds.

I have found a blue USB RS485 dongle and a MAX485 board attached to a Heltec CubeCell Board Plus.

So I'd like to get something lik Modbus Poll running on my Rhubarb Linux laptop first. However..

(base) coderdojo@rhubarb:~$ date

Sat 25 Jul 2026 16:49:26 IST

(base) coderdojo@rhubarb:~$ ldd --version

ldd (Ubuntu GLIBC 2.39-0ubuntu8.7) 2.39

Copyright (C) 2024 Free Software Foundation, Inc.

This is free software; see the source for copying conditions.  There is NO

warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Written by Roland McGrath and Ulrich Drepper.

(base) coderdojo@rhubarb:~$ cd Downloads/

(base) coderdojo@rhubarb:~/Downloads$ ./"Modbus Poll_0.1.5_amd64.AppImage"

modbus-poll: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.43' not found (required by /tmp/.mount_ModbusLFngMe/usr/lib/libglib-2.0.so.0)

modbus-poll: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.43' not found (required by /tmp/.mount_ModbusLFngMe/usr/lib/libwebkit2gtk-4.1.so.0)

modbus-poll: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.42' not found (required by /tmp/.mount_ModbusLFngMe/usr/lib/libwebkit2gtk-4.1.so.0)

modbus-poll: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.43' not found (required by /tmp/.mount_ModbusLFngMe/usr/lib/libjavascriptcoregtk-4.1.so.0)

modbus-poll: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.43' not found (required by /tmp/.mount_ModbusLFngMe/usr/lib/liblcms2.so.2)

modbus-poll: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.43' not found (required by /tmp/.mount_ModbusLFngMe/usr/lib/libjxl.so.0.11)

(base) coderdojo@rhubarb:~/Downloads$ 

(base) coderdojo@rhubarb:~$ dmesg -w

[  299.296263] usb 1-3: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.62

[  299.296281] usb 1-3: New USB device strings: Mfr=0, Product=2, SerialNumber=0

[  299.296289] usb 1-3: Product: USB2.0-Serial

[  299.346087] usbcore: registered new interface driver usbserial_generic

[  299.346102] usbserial: USB Serial support registered for generic

[  299.347405] usbcore: registered new interface driver ch341

[  299.347423] usbserial: USB Serial support registered for ch341-uart

[  299.347437] ch341 1-3:1.0: ch341-uart converter detected

[  299.347902] usb 1-3: ch341-uart converter now attached to ttyUSB0

https://github.com/gavinying/modpoll

(base) coderdojo@rhubarb:~$ pip3 install 'modpoll[serial]'

(base) coderdojo@rhubarb:~$ modpoll

Modpoll v1.6.0 - A New Command-line Tool for Modbus and MQTT

usage: modpoll [-h] [-v] -f CONFIG [CONFIG ...] [-d] [-r RATE] [-1] [--interval INTERVAL] [--tcp TCP] [--tcp-port TCP_PORT]

               [--udp UDP] [--udp-port UDP_PORT] [--serial SERIAL] [--serial-baud SERIAL_BAUD]

               [--serial-parity {none,odd,even}] [--timeout TIMEOUT] [-o EXPORT] [--mqtt-version {3.1.1,5.0}]

               [--mqtt-host MQTT_HOST] [--mqtt-port MQTT_PORT] [--mqtt-clientid MQTT_CLIENTID]

               [--mqtt-publish-topic-pattern MQTT_PUBLISH_TOPIC_PATTERN]

               [--mqtt-subscribe-topic-pattern MQTT_SUBSCRIBE_TOPIC_PATTERN]

               [--mqtt-diagnostics-topic-pattern MQTT_DIAGNOSTICS_TOPIC_PATTERN] [--mqtt-qos {0,1,2}]

               [--mqtt-user MQTT_USER] [--mqtt-pass MQTT_PASS] [--mqtt-use-tls] [--mqtt-insecure]

               [--mqtt-cacerts MQTT_CACERTS] [--mqtt-tls-version {tlsv1.2,tlsv1.1,tlsv1}] [--mqtt-single]

               [--diagnostics-rate DIAGNOSTICS_RATE] [--autoremove] [--loglevel {DEBUG,INFO,WARNING,ERROR,CRITICAL}]

               [--timestamp] [--delay DELAY] [--framer {default,ascii,rtu,socket}]

modpoll: error: the following arguments are required: -f/--config

(base) coderdojo@rhubarb:~$ modpoll --serial /dev/ttyUSB0

(base) coderdojo@rhubarb:~$ git clone https://github.com/gavinying/modpoll.git

Cloning into 'modpoll'...

remote: Enumerating objects: 1871, done.

remote: Counting objects: 100% (336/336), done.

remote: Compressing objects: 100% (110/110), done.

remote: Total 1871 (delta 267), reused 226 (delta 226), pack-reused 1535 (from 2)

Receiving objects: 100% (1871/1871), 16.17 MiB | 1.71 MiB/s, done.

Resolving deltas: 100% (1093/1093), done.

(base) coderdojo@rhubarb:~$ cat modpoll/contrib/eniwise/scpms6.csv 

device,scpm001,1,,,

poll,holding_register,46001,6,BE_BE,

ref,CT_TYPE,46001,uint16,rw,

ref,CT_RATING,46002,uint16,rw,

ref,DATA_SCALAR,46003,uint16,rw,

ref,ReservedA,46004,uint16,rw,

ref,ReservedB,46005,uint16,rw,

ref,SIGNED_MODE,46006,uint16,rw,

poll,holding_register,46011,92,BE_BE,

ref,Hz,46011,int16,r,Hz,1

ref,V,46012,int16,r,V,1

ref,CH1_A,46013,int16,r,A,1

ref,CH2_A,46014,int16,r,A,1

ref,CH3_A,46015,int16,r,A,1

ref,CH4_A,46016,int16,r,A,1

ref,CH5_A,46017,int16,r,A,1

ref,CH6_A,46018,int16,r,A,1

ref,CH1_kWh,46019,uint32,r,kWh,1

ref,CH2_kWh,46021,uint32,r,kWh,1

ref,CH3_kWh,46023,uint32,r,kWh,1

ref,CH4_kWh,46025,uint32,r,kWh,1

ref,CH5_kWh,46027,uint32,r,kWh,1

ref,CH6_kWh,46029,uint32,r,kWh,1

ref,CH1_kWh_P,46031,uint32,r,kWh,1

ref,CH2_kWh_P,46033,uint32,r,kWh,1

ref,CH3_kWh_P,46035,uint32,r,kWh,1

ref,CH4_kWh_P,46037,uint32,r,kWh,1

ref,CH5_kWh_P,46039,uint32,r,kWh,1

ref,CH6_kWh_P,46041,uint32,r,kWh,1

ref,CH1_kWh_N,46043,uint32,r,kWh,1

ref,CH2_kWh_N,46045,uint32,r,kWh,1

ref,CH3_kWh_N,46047,uint32,r,kWh,1

ref,CH4_kWh_N,46049,uint32,r,kWh,1

ref,CH5_kWh_N,46051,uint32,r,kWh,1

ref,CH6_kWh_N,46053,uint32,r,kWh,1

ref,CH1_kVARh,46055,uint32,r,kVARh,1

ref,CH2_kVARh,46057,uint32,r,kVARh,1

ref,CH3_kVARh,46059,uint32,r,kVARh,1

ref,CH4_kVARh,46061,uint32,r,kVARh,1

ref,CH5_kVARh,46063,uint32,r,kVARh,1

ref,CH6_kVARh,46065,uint32,r,kVARh,1

ref,CH1_kVARh_P,46067,uint32,r,kVARh,1

ref,CH2_kVARh_P,46069,uint32,r,kVARh,1

ref,CH3_kVARh_P,46071,uint32,r,kVARh,1

ref,CH4_kVARh_P,46073,uint32,r,kVARh,1

ref,CH5_kVARh_P,46075,uint32,r,kVARh,1

ref,CH6_kVARh_P,46077,uint32,r,kVARh,1

ref,CH1_kVARh_N,46079,uint32,r,kVARh,1

ref,CH2_kVARh_N,46081,uint32,r,kVARh,1

ref,CH3_kVARh_N,46083,uint32,r,kVARh,1

ref,CH4_kVARh_N,46085,uint32,r,kVARh,1

ref,CH5_kVARh_N,46087,uint32,r,kVARh,1

ref,CH6_kVARh_N,46089,uint32,r,kVARh,1

ref,CH1_kVA,46091,int16,r,kVA,1

ref,CH2_kVA,46092,int16,r,kVA,1

ref,CH3_kVA,46093,int16,r,kVA,1

ref,CH4_kVA,46094,int16,r,kVA,1

ref,CH5_kVA,46095,int16,r,kVA,1

ref,CH6_kVA,46096,int16,r,kVA,1

ref,CH1_PF,46097,int16,r,,1

ref,CH2_PF,46098,int16,r,,1

ref,CH3_PF,46099,int16,r,,1

ref,Reserved1,46100,int16,r,

ref,Reserved2,46101,int16,r,

ref,Reserved3,46102,int16,r,

(base) coderdojo@rhubarb:~$ modpoll   --serial /dev/ttyUSB0   --serial-baud 9600   --config modpoll/contrib/eniwise/scpms6.csv

Modpoll v1.6.0 - A New Command-line Tool for Modbus and MQTT

2026-07-25 17:00:44,347 | I | modpoll.main | No MQTT host specified, skip MQTT setup.

2026-07-25 17:00:44,347 | I | modpoll.modbus_task | Loading config from: modpoll/contrib/eniwise/scpms6.csv

2026-07-25 17:00:44,348 | I | modpoll.modbus_task | Added 1 device(s)...

2026-07-25 17:00:44,348 | I | modpoll.main | Loaded 1 Modbus config(s).

2026-07-25 17:00:44,348 | I | modpoll.main |  === Modpoll is polling at rate:10.0s, actual:10.0s ===

^C2026-07-25 17:00:55,487 | I | modpoll.main | Exiting /home/coderdojo/anaconda3/bin/modpoll

2026-07-25 17:00:56,363 | E | pymodbus.logging | No response received after 3 retries, continue with next request

2026-07-25 17:00:56,363 | E | modpoll.modbus_task | Modbus exception: scpm001 3 46001 6

Device: scpm001

+-------------+-------+-------+

| Reference   | Value | Unit  |

+-------------+-------+-------+

| CT_TYPE     |  None |       |

| CT_RATING   |  None |       |

| DATA_SCALAR |  None |       |

| ReservedA   |  None |       |

| ReservedB   |  None |       |

| SIGNED_MODE |  None |       |

| Hz          |  None | Hz    |

| V           |  None | V     |

| CH1_A       |  None | A     |

| CH2_A       |  None | A     |

| CH3_A       |  None | A     |

| CH4_A       |  None | A     |

| CH5_A       |  None | A     |

| CH6_A       |  None | A     |

| CH1_kWh     |  None | kWh   |

| CH2_kWh     |  None | kWh   |

| CH3_kWh     |  None | kWh   |

| CH4_kWh     |  None | kWh   |

| CH5_kWh     |  None | kWh   |

| CH6_kWh     |  None | kWh   |

| CH1_kWh_P   |  None | kWh   |

| CH2_kWh_P   |  None | kWh   |

| CH3_kWh_P   |  None | kWh   |

| CH4_kWh_P   |  None | kWh   |

| CH5_kWh_P   |  None | kWh   |

| CH6_kWh_P   |  None | kWh   |

| CH1_kWh_N   |  None | kWh   |

| CH2_kWh_N   |  None | kWh   |

| CH3_kWh_N   |  None | kWh   |

| CH4_kWh_N   |  None | kWh   |

| CH5_kWh_N   |  None | kWh   |

| CH6_kWh_N   |  None | kWh   |

| CH1_kVARh   |  None | kVARh |

| CH2_kVARh   |  None | kVARh |

| CH3_kVARh   |  None | kVARh |

| CH4_kVARh   |  None | kVARh |

| CH5_kVARh   |  None | kVARh |

| CH6_kVARh   |  None | kVARh |

| CH1_kVARh_P |  None | kVARh |

| CH2_kVARh_P |  None | kVARh |

| CH3_kVARh_P |  None | kVARh |

| CH4_kVARh_P |  None | kVARh |

| CH5_kVARh_P |  None | kVARh |

| CH6_kVARh_P |  None | kVARh |

| CH1_kVARh_N |  None | kVARh |

| CH2_kVARh_N |  None | kVARh |

| CH3_kVARh_N |  None | kVARh |

| CH4_kVARh_N |  None | kVARh |

| CH5_kVARh_N |  None | kVARh |

| CH6_kVARh_N |  None | kVARh |

| CH1_kVA     |  None | kVA   |

| CH2_kVA     |  None | kVA   |

| CH3_kVA     |  None | kVA   |

| CH4_kVA     |  None | kVA   |

| CH5_kVA     |  None | kVA   |

| CH6_kVA     |  None | kVA   |

| CH1_PF      |  None |       |

| CH2_PF      |  None |       |

| CH3_PF      |  None |       |

| Reserved1   |  None |       |

| Reserved2   |  None |       |

| Reserved3   |  None |       |

+-------------+-------+-------+

(base) coderdojo@rhubarb:~$ ^C

(base) coderdojo@rhubarb:~$ date

Sat 25 Jul 2026 17:00:59 IST

(base) coderdojo@rhubarb:~$ 

Trying to talk to all three 24v LFP batteries over BLE

(25/7/26 12:38)

Got some battery inform running 

/home/coderdojo/Arduino/M5 Stamp/BLE_client_v1_3/BLE_client_v1_3.ino

12:38:15.135 -> 

12:38:15.135 -> Looking for BLE device name [BR2262e-s]..

12:38:15.202 -> A BLE Advertised Device named [SP10S009-L8S-100A-B-U] found

12:38:15.235 -> A BLE Advertised Device named [BR2262e-s] found

12:38:15.235 -> Desired BLE Device [BR2262e-s] found

12:38:18.746 -> We are now connected to the BLE Server.

12:38:18.746 -> 0xdd, 0x03, 0x00, 0x19, 0x0a, 0x42, 0x00, 0x00, 0x10, 0x28, 0x27, 0x10, 0x00, 0x7d, 0x2a, 0xc5, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x2b, 0x03, 0x08, 0x01, 0x0b, 0x83, 0xfc, 0xeb, 0x77, 

12:38:18.746 -> Battery current= 0.00 I

12:38:18.746 -> Battery balance=0

12:38:18.746 -> (Not being read!)Battery temperature=0.000000

12:38:18.746 -> messageMask=3

12:38:18.779 -> A BLE Advertised Device named [SP10S009-L8S-100A-B-U] found

12:38:18.779 -> A BLE Advertised Device named [BR2262e-s] found

12:38:18.779 -> Desired BLE Device [BR2262e-s] found

12:38:21.823 -> We are now connected to the BLE Server.

12:38:21.823 -> 0xdd, 0x04, 0x00, 0x10, 0x0c, 0xd4, 0x0c, 0xd3, 0x0c, 0xd3, 0x0c, 0xd2, 0x0c, 0xd2, 0x0c, 0xd2, 0x0c, 0xd3, 0x0c, 0xd4, 0xf8, 0xf9, 0x77, 

12:38:21.823 -> Cell 1=3284 mV, Cell 2=3283 mV, Cell 3=3283 mV, Cell 4=3282 mV, Cell 5=3282 mV, Cell 6=3282 mV, Cell 7=3283 mV, Cell 8=3284 mV, 

12:38:21.823 -> Total volts=26.26 V

12:38:21.823 -> messageMask=7

(25/7/26 10:39)

Just had some success with a M5 Stamp scanning near the batteries..

/home/coderdojo/Arduino/M5 Stamp/Scan/Scan.io

10:49:29.175 -> Advertised Device: Name: SP10S009-L8S-100A-B-U, Address: a4:c1:37:10:00:d2, manufacturer data: d2001037c1a4, serviceUUID: 0000ff00-0000-1000-8000-00805f9b34fb, rssi: -67 

10:49:29.175 -> Advertised Device: Name: , Address: 6e:2e:2e:be:f1:fe, manufacturer data: e000086aca8c48f4, serviceUUID: 0000fe9f-0000-1000-8000-00805f9b34fb, rssi: -83, serviceData:  

10:49:29.473 -> Advertised Device: Name: BR2262e-s, Address: 04:7f:0e:00:1a:7c, manufacturer data: 02a7dc3855a4, serviceUUID: 0000ff00-0000-1000-8000-00805f9b34fb, serviceUUID: 6e40ff00-b5a3-f393-e0a9-e50e24dcca9e, rssi: -69 

10:49:30.536 -> Advertised Device: Name: , Address: 40:00:4d:d3:2d:27, serviceUUID: 0000feed-0000-1000-8000-00805f9b34fb, rssi: -67, serviceData:  

10:49:30.669 -> Advertised Device: Name: DL-401804012334, Address: 40:18:04:01:23:34, manufacturer data: 020316401804012334444c, rssi: -84 

10:49:32.028 -> Advertised Device: Name: , Address: 55:8d:e4:9f:15:a7, serviceUUID: 0000fef3-0000-1000-8000-00805f9b34fb, rssi: -105, serviceData: J#CN2H2X⸮⸮⸮m⸮gLnc⸮)g⸮aB$ 

10:49:32.028 -> Advertised Device: Name: , Address: 40:00:59:aa:b7:e0, serviceUUID: 0000feed-0000-1000-8000-00805f9b34fb, rssi: -76, serviceData:  

10:49:34.153 -> Devices found: 7

10:49:34.153 -> Scan done!

I will next see if I can get battery info!

(20/7/26)

I have three 24v nominal LFP batteries.

Can I use Python3 code to access each over BLE ?

First, "SP10S009-L8S-100A-B-U" A4:C1:37:10:00:D2

Second, "BR2262e-s" 04:7F:0E:00:1A:7C

Third. "????" xx:xx  (daly BMS)

Starting with with First do I write to characteristic 0xFF01 of service 0xFF00 ?

./gatt-python could discover but not connect to "B" or "S"

pi@sionnach:~/gatt-python $ python3 ./discover.py 

Discovered [41:3c:6e:a0:75:f1] 41-3C-6E-A0-75-F1

Discovered [40:00:59:aa:b7:e0] 40-00-59-AA-B7-E0

Discovered [a4:c1:37:10:00:d2] SP10S009-L8S-100A-B-U

Discovered [a4:c1:37:10:00:d2] SP10S009-L8S-100A-B-U

Discovered [04:7f:0e:00:1a:7c] BR2262e-s

Discovered [a4:c1:37:10:00:d2] SP10S009-L8S-100A-B-U

Discovered [a4:c1:37:10:00:d2] SP10S009-L8S-100A-B-U

pi@sionnach:~/gatt-python $ 

pi@sionnach:~/gatt-python $ python3 ./connects_S.py 

[a4:c1:37:10:00:d2] Connection failed: Device does not exist, check adapter name and MAC address.

(2026_05_bleak) pi@sionnach:~/2026_05_bleak also failed.

2026_05_bleak) pi@sionnach:~/2026_05_bleak $ nano scanner_S.py 

(2026_05_bleak) pi@sionnach:~/2026_05_bleak $ 

(2026_05_bleak) pi@sionnach:~/2026_05_bleak $ python3 ./scanner_S.py 

Traceback (most recent call last):

  File "/home/pi/2026_05_bleak/./scanner_S.py", line 37, in <module>

    asyncio.run(main(address))

  File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run

    return runner.run(main)

           ^^^^^^^^^^^^^^^^

  File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run

    return self._loop.run_until_complete(task)

This directory was also no good...

(24v_battery) pi@sionnach:~/24v_battery/bin $ ./gattctl 

Module 'dbus' not found

Please run: sudo apt-get install python3-dbus

See also: https://github.com/getsenic/gatt-python#installing-gatt-sdk-for-python

(24v_battery) pi@sionnach:~/24v_battery/bin $ 

(24v_battery) pi@sionnach:~/jbdtool/build $ 

(24v_battery) pi@sionnach:~/jbdtool/build $ ls ..

battery.h  build.h  changelog  dsfuncs.h  jbd_info.c  list.h    module.h  pack.h    README.md  utils.h

bt.c       can.c    config.h   ip.c       jbd_info.h  main.c    mqtt.c    parson.c  serial.c   uuid.h

buffer.h   cfg.c    daemon.c   jbd.c      LICENSE     Makefile  mqtt.h    parson.h  si.h       worker.h

build      cfg.h    debug.h    jbd.h      list.c      module.c  mybmm.h   r         utils.c

(24v_battery) pi@sionnach:~/jbdtool/build $ 

Also no good

Also no good

(JBD_BMS_BTLE) pi@sionnach:~/JBD_BMS_BTLE $ cd ..

Didn't try aiobmsble as it looks incomplete as no runnable .py script!

Didn't try ANT_BMS as it uses serial port

smart_bms also failed..

docs  dumb_test.py  examples  LICENSE.txt  README.md  requirements.txt  smart_bms  test.py

pi@sionnach:~/smart_bms $ vim test.py 

pi@sionnach:~/smart_bms $ python3 ./test.py 

('A4:C1:37:10:00:D2', 'SP10S009-L8S-100A-B-U', 'Jikong')

WALSH: Running bluetootchctl command <disconnect A4:C1:37:10:00:D2>

WALSH: Running bluetootchctl command <power on>

Traceback (most recent call last):

  File "/usr/lib/python3.11/asyncio/tasks.py", line 490, in wait_for

    return fut.result()

           ^^^^^^^^^^^^

  File "/home/pi/smart_bms/smart_bms/TransportBLE.py", line 70, in _read_inner

    data = [await self._read_queue.get()]

pi@sionnach:~/solar-bt-monitor $ nano solar-bt-monitor.ini

pi@sionnach:~/solar-bt-monitor $ nano solar-bt-monitor.ini.B

pi@sionnach:~/solar-bt-monitor $ 

pi@sionnach:~/solar-bt-monitor $ python3 ./solar-bt-monitor.py 

DEBUG: [CONFIG] mac_addr: A4:C1:37:10:00:D2

DEBUG: [CONFIG] alias: SP10S009-L8S-100A-B-U

DEBUG: [CONFIG] adapter: hci0

DEBUG: [CONFIG] reconnect: True

DEBUG: [CONFIG] continuous_monitor: True

DEBUG: [CONFIG] data_read_interval: 30

DEBUG: [CONFIG] logger_type: prometheus

INFO: Starting Prometheus Server

INFO: Adapter status - Powered: True

INFO: Starting discovery...

INFO: Devices found: 5

INFO: Found bt1 device SP10S009-L8S-100A-B-U  [A4:C1:37:10:00:D2]

INFO: Found bt1 device SP10S009-L8S-100A-B-U  [a4:c1:37:10:00:d2]

DEBUG: Found. So connecting...

DEBUG: _connect() run manager...

INFO: [a4:c1:37:10:00:d2] Discovered, alias = SP10S009-L8S-100A-B-U

INFO: [A4:C1:37:10:00:D2] Connected

INFO: [a4:c1:37:10:00:d2] Discovered, alias = SP10S009-L8S-100A-B-U

INFO: [A4:C1:37:10:00:D2] Resolved services

DEBUG: resolved services

DEBUG: request_data...

DEBUG: create_read_request 256 => [255, 3, 1, 0, 0, 34, 209, 241]

ERROR: Exception in handler for D-Bus signal:

Traceback (most recent call last):

  File "/usr/lib/python3/dist-packages/dbus/connection.py", line 218, in maybe_handle_message

    self._handler(*args, **kwargs)

  File "/home/pi/.local/lib/python3.11/site-packages/gatt/gatt_linux.py", line 398, in properties_changed

    self.services_resolved()

  File "/home/pi/solar-bt-monitor/SolarDevice.py", line 63, in services_resolved

    self.resolved_callback()

  File "/home/pi/solar-bt-monitor/BTOneApp.py", line 95, in on_resolved

    self.request_data()

  File "/home/pi/solar-bt-monitor/BTOneApp.py", line 91, in request_data

    self.device.characteristic_write_value(request)

  File "/home/pi/solar-bt-monitor/SolarDevice.py", line 79, in characteristic_write_value

    self.write_characteristic.write_value(value)

    ^^^^^^^^^^^^^^^^^^^^^^^^^

AttributeError: 'SolarDevice' object has no attribute 'write_characteristic'

INFO: [a4:c1:37:10:00:d2] Discovered, alias = SP10S009-L8S-100A-B-U

^CDEBUG: _connect() keyboard exception...

INFO: gracefully_exit

INFO: Exit: Disconnecting device: SP10S009-L8S-100A-B-U [A4:C1:37:10:00:D2]

pi@sionnach:~/solar-bt-monitor $ 

pi@sionnach:~/solar-bt-monitor $ 

pi@sionnach:~/solar-bt-monitor $ date

Mon 20 Jul 17:40:23 IST 2026

pi@sionnach:~/solar-bt-monitor $ # Got further may be worth debugging?

pi@sionnach:~/solar-bt-monitor $ 

pi@sionnach:~/solar-bt-monitor $ 

Or should I use a wired connection to each BMS ? Scary

What does Android app make of them ?

daly

jbd

xiaoxiang

Hurrah!!!!

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ vim jbd_bms_bleak2.py 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ vim ./jbd_bms_bleak2.py 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ python3 ./jbd_bms_bleak2.py 

INFO:__main__:Found device: SP10S009-L8S-100A-B-U (A4:C1:37:10:00:D2)

INFO:__main__:Updating BMS data...

INFO:__main__:BMS data: {'voltage': 25.99,

        'current': 0.0,

        'cycle_charge': 0.14,

        'design_capacity': 100,

        'cycles': 584,

        'balancer': 0,

        'problem_code': 4096,

        'battery_level': 0,

        'chrg_mosfet': True,

        'dischrg_mosfet': False,

        'temp_sensors': 2,

        'temp_values': [TempSensor(22.6,

        <T.GENERIC: 0>),

        TempSensor(22.7,

        <T.GENERIC: 0>)],

        'cell_voltages': [3.249,

        3.25,

        3.247,

        3.249,

        3.248,

        3.248,

        3.248,

        3.253],

        'delta_voltage': 0.006,

        'cell_count': 8,

        'cycle_capacity': 3.639,

        'power': 0.0,

        'battery_charging': False,

        'temperature': 22.65,

        'problem': True}

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ date

Mon 20 Jul 2026 19:16:20 IST

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ 

Now lets try that on a Raspberry Pi!

Pythoin version only 3.11 needs to be at least 3.12

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ python3 ./jbd_S_bms_bleak.py 

INFO:__main__:Found device: SP10S009-L8S-100A-B-U (A4:C1:37:10:00:D2)

INFO:__main__:Updating BMS data...

INFO:__main__:BMS data: {'voltage': 25.99,

        'current': 0.0,

        'cycle_charge': 0.14,

        'design_capacity': 100,

        'cycles': 584,

        'balancer': 0,

        'problem_code': 4096,

        'battery_level': 0,

        'chrg_mosfet': True,

        'dischrg_mosfet': False,

        'temp_sensors': 2,

        'temp_values': [TempSensor(22.6,

        <T.GENERIC: 0>),

        TempSensor(22.7,

        <T.GENERIC: 0>)],

        'cell_voltages': [3.249,

        3.25,

        3.247,

        3.249,

        3.248,

        3.248,

        3.248,

        3.253],

        'delta_voltage': 0.006,

        'cell_count': 8,

        'cycle_capacity': 3.639,

        'power': 0.0,

        'battery_charging': False,

        'temperature': 22.65,

        'problem': True}

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ nano jbd_B_bms_bleak.py 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ vim jbd_B_bms_bleak.py 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ 

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ python3 ./jbd_B_bms_bleak.py 

ERROR:root:Device 'BR2262e-s' not found.

(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ date

Mon 20 Jul 2026 19:27:29 IST

https://raspberrytips.com/install-latest-python-raspberry-pi/

Trying to build Python 3.12.g on sionnach to run aiobmsble!

pi@sionnach:~/Python-3.13.6 $ sudo make

..

e.o  Modules/_weakref.o  Modules/_abc.o  Modules/_functoolsmodule.o  Modules/_localemodule.o  Modules/_operator.o  Modules/_stat.o  Modules/symtablemodule.o  Modules/pwdmodule.o Modules/getpath.o Python/frozen.o -ldl                           -lm 

sed -e "s,/usr/bin/env python3,/usr/local/bin/python3.13," < ./Tools/scripts/idle3 > build/scripts-3.13/idle3.13

sed -e "s,/usr/bin/env python3,/usr/local/bin/python3.13," < ./Tools/scripts/pydoc3 > build/scripts-3.13/pydoc3.13

The following modules are *disabled* in configure script:

_sqlite3                                                                   

The necessary bits to build these optional modules were not found:

_bz2                      _ctypes                   _ctypes_test           

_curses                   _curses_panel             _dbm                   

_gdbm                     _lzma                     _tkinter               

_uuid                     readline                                         

To find the necessary bits, look in configure.ac and config.log.

Checked 112 modules (33 built-in, 66 shared, 1 n/a on linux-aarch64, 1 disabled, 11 missing, 0 failed on import)

pi@sionnach:~/Python-3.13.6 $ 

pi@sionnach:~/Python-3.13.6 $ sudo make install

..

Looking in links: /tmp/tmpawanvuou

Processing /tmp/tmpawanvuou/pip-25.2-py3-none-any.whl

Installing collected packages: pip

Successfully installed pip-25.2

WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager, possibly rendering your system unusable. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv. Use the --root-user-action option if you know what you are doing and want to suppress this warning.

pi@sionnach:~/Python-3.13.6 $ 

pi@sionnach:~/Python-3.13.6 $ 

pi@sionnach:~/Python-3.13.6 $ ls -al python

-rwxr-xr-x 1 root root 32817424 Jul 20 23:07 python

pi@sionnach:~/Python-3.13.6 $ date

Tue 21 Jul 10:06:15 IST 2026

pi@sionnach:~/Python-3.13.6 $ ./python

Fatal Python error: Failed to import encodings module

Python runtime state: core initialized

ModuleNotFoundError: No module named 'encodings'

Current thread 0x0000007f8e77d040 (most recent call first):

  <no Python frame>

pi@sionnach:~/Python-3.13.6 $ 

pi@sionnach:~/Python-3.13.6 $ 

So still cannot execute it!

Getting NextCloud going on self-hosted Lint Mint server in Tola attic

 (Thurs 9th July 2026) Getting it going on my Lint Mint lserver (from Malcolm STMS)

(Weds 8th July 2026) Getting it going on my Lint Mint laptop (rhubarb)

https://nextcloud.com/install/#aio

https://github.com/nextcloud/all-in-one#how-to-use-this

sudo docker run   --init   --sig-proxy=false   --name nextcloud-aio-mastercontainer   --restart always   --publish 80:80   --publish 8080:8080   --publish 8443:8443   --volume nextcloud_aio_mastercontainer:/mnt/docker-aio-config   --volume /var/run/docker.sock:/var/run/docker.sock:ro   ghcr.io/nextcloud-releases/all-in-one:latest

But failed to install as it needs to contact through port 443. I opened up GL.iNet on http://192.168.22.1/ as shannonclare.zapto.org  and bm9364b.glddns.com but this didn't seemd to helps so more needed. Also lets put in on a server desktop in the attic!

Getting Home Assistant to run in Docker on a Linux Mint Laptop

(Weds 7th July 2026)
To get HACS installed I followed the instructions at:

https://lazyadmin.nl/smart-home/install-hacs-home-assistan/

But HA couldn't see it to add. So I decided to launch HA using composer on my laptop rather that the CLI "docker run" command.

But first I will relearn docker CLI by watching this video..

https://www.youtube.com/watch?v=DQdB7wFEygo&t=48s

Gave up and used the CLI to restart HA..

(base) coderdojo@rhubarb:~/HomeAssistant$ docker images
                                                                                                             i Info →   U  In Use
IMAGE                                          ID             DISK USAGE   CONTENT SIZE   EXTRA
dockurr/windows:latest                         70a979906f6a        428MB             0B        
ghcr.io/esphome/esphome:latest                 1973bed8914f        739MB             0B        
ghcr.io/home-assistant/home-assistant:stable   ceb81d836a0b       2.36GB             0B    U   
hello-world:latest                             1b44b5a3e06a       10.1kB             0B    U   
(base) coderdojo@rhubarb:~/HomeAssistant$ docker ps
CONTAINER ID   IMAGE                                          COMMAND   CREATED        STATUS        PORTS     NAMES
34693f51fada   ghcr.io/home-assistant/home-assistant:stable   "/init"   10 hours ago   Up 10 hours             homeassistant
(base) coderdojo@rhubarb:~/HomeAssistant$ 
(base) coderdojo@rhubarb:~/HomeAssistant$ docker restart 34693f51fada
34693f51fada
(base) coderdojo@rhubarb:~/HomeAssistant$ docker ps
CONTAINER ID   IMAGE                                          COMMAND   CREATED        STATUS         PORTS     NAMES
34693f51fada   ghcr.io/home-assistant/home-assistant:stable   "/init"   10 hours ago   Up 3 seconds             homeassistant
(base) coderdojo@rhubarb:~/HomeAssistant$ 

So next to see if it can see HACS now..  Nope!

Lets go through these steps..

https://www.simplysmart.house/blog/how-to-install-HACS-on-home-assistant-Docker

That worked when I followed the instructions to a tee include Github sign on :)

Now to add some HACS stuff!  Such as "local tuya"

But cannot access https://github.com/codetheweb/tuyapi/blob/master/docs/SETUP.md

page at present! Huh?

(Tues 7th July 2026)
I tried on a Raspberry Pi first after being excited by watching this video:

https://www.youtube.com/watch?v=PhJIycywIA0&t=133s

but it failed to find an image for that architecture:

pi@tarbh:~ $ cd HomeAssistant/
pi@tarbh:~/HomeAssistant $ cat compose.yaml 
version: '3'
services:
  homeassistant:
    container_name: homeassistant
    image: ghcr.io/home-assistant/home-assistant:stable
    volumes:
      - /home/pi/homeassistant:/config 
      - /etc/localtime:/etc/localtime:ie
      - /run/dbus:/run/dbus:ro 
    restart: unless-stopped 
    privileged: true
    network_mode: host 
pi@tarbh:~/HomeAssistant $ ls
compose.yaml
pi@tarbh:~/HomeAssistant $ docker compose up -d
WARN[0000] /home/pi/HomeAssistant/compose.yaml: the attribute `version` is obsolete, it will be ignored, please remove it to avoid potential confusion 
[+] up 0/1
 ⠇ Image ghcr.io/home-assistant/home-assistant:stable Pulling                                                                1.9s
no matching manifest for linux/arm/v8 in the manifest list entries
pi@tarbh:~/HomeAssistant $ 

So next I thought I'd try it on my Linux Mint Laptop..

(base) coderdojo@rhubarb:~/HomeAssistant$ docker run -d   --name homeassistant   --privileged   --restart=unless-stopped   -e TZ=Europe/Dublin   -v /home/coderdojo/HomeAssistant:/config   -v /run/dbus:/run/dbus:ro   --network=host   ghcr.io/home-assistant/home-assistant:stable

Unable to find image 'ghcr.io/home-assistant/home-assistant:stable' locally

stable: Pulling from home-assistant/home-assistant

c5cfc437e4cd: Pull complete 

a0599c81070e: Pull complete 

37f806cc4461: Pull complete 

..

f1ad270565d0: Pull complete 

9a5335991821: Pull complete 

5835c1c32669: Pull complete 

Digest: sha256:f73512ba4fe06bb4d57636fe3578d0820cdec46f81e8f837ab59e451662ff3cb

Status: Downloaded newer image for ghcr.io/home-assistant/home-assistant:stable

34693f51fadad4a6fdc67679ec42cc12cd4da6c8ff024ab25536811e97b6d6e2

(base) coderdojo@rhubarb:~/HomeAssistant$ 

So success! It did take an age on onboard after I created a user account at localhost:8123 and eventually hanged.

But eventually I could login in and access at in another tab at: http://192.168.1.193:8123 event while the first tab was hung :)

Here's how it looks now..

So next to get HACS on it.

Moving Zigbee smart home sensors to Python3 monitoring (from Node-Red)

So I though a more punchy system service with journal logging might be better than using the web portal or Node-Red logging.

This is the current state of play of all my smart home Zigbee devices:

Sonoff ZbBridge Tasmota_ZbBridge router (192.168.1.151) running Tasmota 12.2.0 by Theo Arends that knows of these devices..

Front Door 🕗19h

Front Presence SNZB06P 🕗95d

Kitchen Door 🕗56m

kitchen window 🕗04h

TRV Frontroom 🕗48d ┆ ☀️ 0.5°C 🎯 6.2°C ⚙️ 0%

TRV James Bedroom 🕗28m ┆ ☀️ 0.5°C 🎯 3.5°C

unknown device ┆ Off

Yard Presence SNZB06P

 back_bedroom 🕗72d ┆ ☀️ 17.8°C 💧 84%

Bathroom 🕗06m ┆ ☀️ 27.0°C 💧 74%

bathroom window 🕗11h

electric blanket 🕗43m┆ Off

Electric Heater ┆ ☀️ 12.1°C

Front Room Ceiling Light  ┆ On 🔅 0% #FF0000

front_bedroom ┆ ☀️ 16.3°C 💧 77%

front_room_3x_power ┆ On

Frontroom ┆ ☀️ 20.2°C 💧 68%

Hallway 🕗39m ┆ ☀️ 18.5°C 💧 78%

Kitchen 🕗48m┆ ☀️ 23.7°C 💧 89%

Kitchen Repeater  🕗23h

kitchen_led 🕗10m┆ Off 🔅 0% #FF0000

Office 🕗04m┆ ☀️ 25.1°C 💧 75%

PIR Pergola  

PIR Porch 🕗31d

PIR Studio  

Shower Pump Switch 🕗01h

SNZB02D Front room window ┆ ☀️ 19.2°C 💧 50%

SNZB02D James Bedroom 🕗03m┆ ☀️ 24.7°C 💧 68%

Tony Bedroom Door  

tony_LED ┆ Off 🔅 0% #FF0000

tonys window 🕗62d

TRV Front Room ┆ ☀️ 17.0°C 🎯 15.0°C ⚙️ 0%

TRV Kitchen 🕗08m┆ ☀️ 0.5°C 🎯 3.5°C ⚙️ 0%

TRV Office 🕗00m┆ ☀️ 0.5°C 🎯 3.5°C

TRV Seans Bedroom 🕗06m┆ ☀️ 0.5°C 🎯 3.5°C

TRV Tonys Bedroom ┆ ☀️ 18.5°C 🎯 15.0°C ⚙️ 0%

Upstairs Repeater 🕗19h

Device 0x130C  

Device 0x135E 🕗06m

Device 0x16AD  

Device 0x3794 ┆ Off 🔅 0% #FF0000

Device 0x4B3E

Device 0x6568

Device 0x6640

Device 0x803A 🕗62d┆ On

Device 0x8826  

Device 0x894A  

Device 0xABAD  

Device 0xCFF7  

Device 0xEE12  

Device 0xF394

 

So this is a mess! So I will audit every mentioned device and checking its still communicating and changing its name to include its adress, location and function.. e.g  0xXXXX_kitchen_TRV

zblist command on web consule returns

10:31:45.936 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0xEE12":{"Device":"0xEE12","IEEEAddr":"0xBC33ACFFFE37F766","Endpoints":[],"Config":[],"Reachable":false,"LastSeen":43334975,"LastSeenEpoch":1739131330,"LinkQuality":92}}}

10:31:45.954 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0x130C":{"Device":"0x130C","IEEEAddr":"0x0000000000000000","Endpoints":[1],"Config":["I01"],"Occupancy":0,"Reachable":false,"LastSeen":13798156,"LastSeenEpoch":1768668149,"LinkQuality":76}}}

10:31:45.971 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0x6640":{"Device":"0x6640","IEEEAddr":"0x00124B001CD60DD6","ModelId":"TH01","Manufacturer":"eWeLink","Endpoints":[1],"Config":[],"Reachable":false,"LastSeen":37289674,"LastSeenEpoch":1745176631,"LinkQuality":89}}}

10:31:45.988 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0x8826":{"Device":"0x8826","IEEEAddr":"0x00124B001F918A6E","ModelId":"TH01","Manufacturer":"eWeLink","Endpoints":[1],"Config":[],"Reachable":false,"LastSeen":37288605,"LastSeenEpoch":1745177700,"LinkQuality":63}}}

10:31:46.002 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0x894A":{"Device":"0x894A","IEEEAddr":"0x00124B001F91D531","ModelId":"TH01","Manufacturer":"eWeLink","Endpoints":[1],"Config":[],"Reachable":false,"LastSeen":37288485,"LastSeenEpoch":1745177820,"LinkQuality":81}}}

10:31:46.017 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0x16AD":{"Device":"0x16AD","IEEEAddr":"0x00124B001F918CBF","ModelId":"TH01","Manufacturer":"eWeLink","Endpoints":[1],"Config":[],"Reachable":false,"LastSeen":37288166,"LastSeenEpoch":1745178140,"LinkQuality":84}}}

10:31:46.034 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0xF394":{"Device":"0xF394","IEEEAddr":"0x00124B001CD5956C","ModelId":"TH01","Manufacturer":"eWeLink","Endpoints":[1],"Config":[],"Reachable":false,"LastSeen":37287943,"LastSeenEpoch":1745178363,"LinkQuality":128}}}

10:31:46.049 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0xCFF7":{"Device":"0xCFF7","IEEEAddr":"0x00124B001F91991B","ModelId":"WB01","Manufacturer":"eWeLink","Endpoints":[1],"Config":[],"Reachable":false,"LastSeen":37286879,"LastSeenEpoch":1745179427,"LinkQuality":63}}}

10:31:46.066 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0xABAD":{"Device":"0xABAD","IEEEAddr":"0x00124B001FAF2ACC","ModelId":"MS01","Manufacturer":"eWeLink","Endpoints":[1],"Config":[],"Reachable":false,"BatteryPercentage":100,"BatteryLastSeenEpoch":1745179511,"LastSeen":37237312,"LastSeenEpoch":1745228994,"LinkQuality":50}}}

10:31:46.084 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0x4B3E":{"Device":"0x4B3E","IEEEAddr":"0x00124B001FAF4F89","ModelId":"ms01","Manufacturer":"eWeLink","Endpoints":[1],"Config":[],"Reachable":false,"BatteryPercentage":100,"BatteryLastSeenEpoch":1745179507,"LastSeen":37237312,"LastSeenEpoch":1745228994,"LinkQuality":48}}}

10:31:46.103 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0x3794":{"Device":"0x3794","IEEEAddr":"0x0000000000000000","Endpoints":[1],"Config":["L01","O01"],"Dimmer":1,"Hue":0,"Sat":254,"X":45874,"Y":19660,"CT":500,"ColorMode":2,"RGB":"FF0000","RGBb":"010000","Power":0,"Reachable":false,"LastSeen":12825219,"LastSeenEpoch":1769641087,"LinkQuality":29}}}

10:31:46.121 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0x6568":{"Device":"0x6568","IEEEAddr":"0x0000000000000000","Endpoints":[],"Config":[],"Reachable":false,"LastSeen":9646458,"LastSeenEpoch":1772819848,"LinkQuality":58}}}

10:31:46.138 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbInfo":{"0x135E":{"Device":"0x135E","IEEEAddr":"0x0000000000000000","Endpoints":[1],"Config":["I01"],"Occupancy":0,"Reachable":true,"LastSeen":443,"LastSeenEpoch":1782465863,"LinkQuality":115}}}

10:31:46.152 MQT: stat/tasmota_zbbridge_0576A9/RESULT = {"ZbInfo":"Done"}

We need a list by device address !

10:33:54.401 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbReceived":{"0xEF0E":{"Device":"0xEF0E","Name":"Bathroom","BatteryPercentage":64,"Endpoint":1,"LinkQuality":102}}}

10:34:21.904 MQT: tele/tasmota_zbbridge_0576A9/SENSOR = {"ZbReceived":{"0xE1B9":{"Device":"0xE1B9","Name":"Office","Temperature":25.3,"Endpoint":1,"LinkQuality":102}}}

0xEF0E Bathroom 

Sonoff  SNZB-01P Switch

Sonoff SNZB-02    Temperature and Humidity

Fresh audit..

Tonys Bedroom  SNZB-02"Device":"0x9AFE","Name":"back_bedroom" needs CR2450 battery

now online

How to provide remotely accessible graphs on a Raspberry Pi

(27/6/2026)

Let's command line test accessing TTN data form slan-093 in the polytunnel in Drumgeely..

pi@drumgeely:~ $ 
pi@drumgeely:~ $ 
pi@drumgeely:~ $ date
Sat 27 Jun 14:06:54 IST 2026
pi@drumgeely:~ $ uptime
 14:06:57 up 18 days, 10:27,  3 users,  load average: 0.21, 0.11, 0.04
pi@drumgeely:~ $ df -m .
Filesystem     1M-blocks  Used Available Use% Mounted on
/dev/mmcblk0p2     14351 12563      1040  93% /
pi@drumgeely:~ $ 
pi@drumgeely:~ $ mosquitto_sub -h ###URL### -p 1883 -u ###USER### -P ###PASSWORD### -t \# -F %I%J
2026-06-27T14:13:44+0100{"tst":"2026-06-27T14:13:44.715422Z+0100","topic":"v3/tola-park-environment@ttn/devices/slan-093/up","qos":0,"retain":0,"payloadlen":1712,"payload":{"end_device_ids":{"device_id":"slan-093","application_ids":{"application_id":"tola-park-environment"},"dev_eui":"70B3D57ED0069C07","join_eui":"0000000000000000","dev_addr":"260BE272"},"correlation_ids":["gs:uplink:01KW4KDX844SM3HXK9TNR7JCAD"],"received_at":"2026-06-27T13:13:44.658361992Z","uplink_message":{"session_key_id":"AZ2DKWrsvLI34SF6BYC4fw==","f_port":8,"f_cnt":10863,"frm_payload":"FS4TUAABizYNyAAAAHsQiA==","decoded_payload":{"battery":3528,"battery_level":0,"gas_resistance":8065.16,"humidity":49.44,"pressure":1011.74,"temperature":24.22},"rx_metadata":[{"gateway_ids":{"gateway_id":"stt-drumgeely-gateway-id","eui":"B827EBFFFEBC60E1"},"time":"2026-06-27T13:13:44.356957912Z","timestamp":1593785500,"rssi":-97,"channel_rssi":-97,"snr":11.25,"location":{"latitude":52.699723918918075,"longitude":-8.8875639438629168,"source":"SOURCE_REGISTRY"},"uplink_token":"CiYKJAoYc3R0LWRydW1nZWVseS1nYXRld2F5LWlkEgi4J+v//rxg4RCc+fz3BRoMCIiZ/9EGEOeW2tcBIOCCk6ixmQc=","received_at":"2026-06-27T13:13:44.363999711Z"}],"settings":{"data_rate":{"lora":{"bandwidth":125000,"spreading_factor":9,"coding_rate":"4/5"}},"frequency":"867100000","timestamp":1593785500,"time":"2026-06-27T13:13:44.356957912Z"},"received_at":"2026-06-27T13:13:44.453013498Z","confirmed":true,"consumed_airtime":"0.226304s","version_ids":{"brand_id":"heltec","model_id":"cubecell-1-2-aa-node-class-a-otaa","hardware_version":"_unknown_hw_version_","firmware_version":"1.0","band_id":"EU_863_870"},"network_ids":{"net_id":"000013","ns_id":"EC656E0000000181","tenant_id":"ttn","cluster_id":"eu1","cluster_address":"eu1.cloud.thethings.network"},"last_battery_percentage":{"f_cnt":10769,"value":0,"received_at":"2026-06-26T21:28:24.174897133Z"}}}}

So lets put this into a Python script next..

pi@drumgeely:~ $ mkdir mqtt_python3

pi@drumgeely:~ $ python3 -m venv ./mqtt_python3

pi@drumgeely:~ $ source ./mqtt_python3/bin/activate

(mqtt_python3) pi@drumgeely:~ $ pwd

/home/pi

(mqtt_python3) pi@drumgeely:~ $ cd mqtt_python3/

(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ pip3 install paho-mqtt

Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple

Collecting paho-mqtt

  Obtaining dependency information for paho-mqtt from https://www.piwheels.org/simple/paho-mqtt/paho_mqtt-2.1.0-py3-none-any.whl.metadata

  Downloading https://www.piwheels.org/simple/paho-mqtt/paho_mqtt-2.1.0-py3-none-any.whl.metadata (23 kB)

Downloading https://www.piwheels.org/simple/paho-mqtt/paho_mqtt-2.1.0-py3-none-any.whl (67 kB)

   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 67.2/67.2 kB 504.2 kB/s eta 0:00:00

Using cached https://www.piwheels.org/simple/paho-mqtt/paho_mqtt-2.1.0-py3-none-any.whl (67 kB)

Installing collected packages: paho-mqtt

Successfully installed paho-mqtt-2.1.0

(mqtt_python3) pi@drumgeely:~/mqtt_python3 $

And write the script..

Got from https://www.emqx.com/en/blog/how-to-use-mqtt-in-python

(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ 
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ cat ./test.py 
from paho.mqtt import client as mqtt_client
import random
broker = '###URL###'
port = 1883
topic = '#'  # Want everything so escape \ for \# topic
client_id = f'python-mqtt-{random.randint(0, 1000)}'
username = '###USERNAME###'
password = '###PASWORD###'




def connect_mqtt() -> mqtt_client:
    def on_connect(client, userdata, flags, reason_code, properties):
        if reason_code == 0:
            print("Connected to MQTT Broker!")
        else:
            print(f"Failed to connect, return code {reason_code}")
    client = mqtt_client.Client(
        client_id=client_id,
        callback_api_version=mqtt_client.CallbackAPIVersion.VERSION2,
    )
    client.username_pw_set(username, password)
    client.on_connect = on_connect
    client.connect(broker, port)
    return client

def subscribe(client: mqtt_client):
    def on_message(client, userdata, msg):
        print(f"Received `{msg.payload.decode()}` from `{msg.topic}` topic")
    client.subscribe(topic)
    client.on_message = on_message

def run():
    client = connect_mqtt()
    subscribe(client)
    client.loop_forever()

if __name__ == '__main__':
    run()


(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ 

(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ 
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ python3 ./test.py 
Connected to MQTT Broker!
Received `{"end_device_ids":{"device_id":"slan-093","application_ids":{"application_id":"tola-park-environment"},"dev_eui":"70B3D57ED0069C07","join_eui":"0000000000000000","dev_addr":"260BE272"},"correlation_ids":["gs:uplink:01KW4PWM05KPRKH14ACZ6AENDP"],"received_at":"2026-06-27T14:14:12.437386512Z","uplink_message":{"session_key_id":"AZ2DKWrsvLI34SF6BYC4fw==","f_port":8,"f_cnt":10869,"frm_payload":"FJoEFQABi7kNygAAAEKGCg==","decoded_payload":{"battery":3530,"battery_level":0,"gas_resistance":4359.69,"humidity":10.45,"pressure":1013.05,"temperature":22.740000000000002},"rx_metadata":[{"gateway_ids":{"gateway_id":"stt-drumgeely-gateway-id","eui":"B827EBFFFEBC60E1"},"time":"2026-06-27T14:14:12.135459899Z","timestamp":926595667,"rssi":-84,"channel_rssi":-84,"snr":8,"location":{"latitude":52.699723918918075,"longitude":-8.887563943862917,"source":"SOURCE_REGISTRY"},"uplink_token":"CiYKJAoYc3R0LWRydW1nZWVseS1nYXRld2F5LWlkEgi4J+v//rxg4RDT9Oq5AxoLCLS1/9EGEKGdu20guKif6/uCCA==","received_at":"2026-06-27T14:14:12.102755295Z"}],"settings":{"data_rate":{"lora":{"bandwidth":125000,"spreading_factor":7,"coding_rate":"4/5"}},"frequency":"868500000","timestamp":926595667,"time":"2026-06-27T14:14:12.135459899Z"},"received_at":"2026-06-27T14:14:12.230395754Z","confirmed":true,"consumed_airtime":"0.071936s","version_ids":{"brand_id":"heltec","model_id":"cubecell-1-2-aa-node-class-a-otaa","hardware_version":"_unknown_hw_version_","firmware_version":"1.0","band_id":"EU_863_870"},"network_ids":{"net_id":"000013","ns_id":"EC656E0000000181","tenant_id":"ttn","cluster_id":"eu1","cluster_address":"eu1.cloud.thethings.network"},"last_battery_percentage":{"f_cnt":10769,"value":0,"received_at":"2026-06-26T21:28:24.174897133Z"}}}` from `v3/tola-park-environment@ttn/devices/slan-093/up` topic

Now lets store this to the sqlite3 database :)

mqtt_python3) pi@drumgeely:~/mqtt_python3 $ ls -al
total 36
drwxr-xr-x  5 pi pi 4096 Jun 27 15:28 .
drwx------ 23 pi pi 4096 Jun 27 15:06 ..
drwxr-xr-x  2 pi pi 4096 Jun 27 15:00 bin
-rw-r--r--  1 pi pi    1 Jun 27 15:27 database.db
drwxr-xr-x  3 pi pi 4096 Jun 27 14:59 include
drwxr-xr-x  3 pi pi 4096 Jun 27 14:59 lib
-rw-r--r--  1 pi pi  160 Jun 27 14:59 pyvenv.cfg
-rw-r--r--  1 pi pi 1262 Jun 27 15:14 test_mqtt.py
-rw-r--r--  1 pi pi  360 Jun 27 15:28 test_sqlite3.py
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ 
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ python3 ./test_sqlite3.py 
User: Tobias, Age: 28
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ ls -al database.db 
-rw-r--r-- 1 pi pi 8192 Jun 27 15:28 database.db
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ sqlite3
SQLite version 3.40.1 2022-12-28 14:03:47
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.
sqlite> .open database.db
sqlite> .databases
main: /home/pi/mqtt_python3/database.db r/w
sqlite> .tables
users
sqlite> .schema
CREATE TABLE users (name TEXT, age INTEGER);
sqlite> .exit
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ 
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ date
Sat 27 Jun 15:34:08 IST 2026
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ 
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ sqlite3 database.db 
SQLite version 3.40.1 2022-12-28 14:03:47
Enter ".help" for usage hints.
sqlite> SELECT * from users;
Tobias|28
sqlite> .exit
(mqtt_python3) pi@drumgeely:~/mqtt_python3 $ 

So we can now write user data to the user table in the databases.db file

Let's decide the table structure to store our Drumgeely sensor data

sensors - name of table

index name (20 chars), time (40 chars), data (JSON data upto 200 chars)

'slan-093 ', '2026-06-27T14:14:12.230395754Z', '{"battery":3530,"battery_level":0,"gas_resistance":4359.69,"humidity":10.45,"pressure":1013.05,"temperature":22.740000000000002}'

So 260 chars per table entry

Let's try that in real life..

(26/6/2026 09:48)

So I couldn't install plotly on drumgeely Rpi (see below) so instead I will capture sensor data locally to a sqlite database and then do 5 minute updates to graphs held on calendula Rpi (which in turn are shared on Shannon Town Community Wetlands website).

Let's start by accessing LoRaWAN sensor data using Python and MQTT ..

First let's log in remotely using a Hyper terminal shell and update the system..

Linux drumgeely 6.12.75+rpt-rpi-v7 #1 SMP Raspbian 1:6.12.75-1+rpt1~bookworm (2026-03-11) armv7l
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Sat Jun 20 15:18:24 2026 from 172.28.15.43
pi@drumgeely:~ $ 
pi@drumgeely:~ $ sudo apt update
Get:1 http://raspbian.raspberrypi.com/raspbian bookworm InRelease [15.0 kB]                                 
Get:2 http://archive.raspberrypi.com/debian bookworm InRelease [55.0 kB]

After this let's check on disk space and uptime..

(20/6/2026 12:30)

So in this blog we will provide remotely accessible graphs on a Raspberry Pi. The RPi in question is in the 40' container of Shannon Tidy Towns in Drumgeely. I anticipate accomplishing this by the following steps:

1) Get a NoIp domain name installed on the Rpi (noip2)

2) Install webserver (apache2)

3) Install graphing software (dash_plotly)

4) Install database (sqlite3)

5) Gather (TTN, MQTT, WiFi) and post data to graph to the database

6) Created graph web pages

Most of the above has already been done by me on my RPi smart home host called calendula. So let's go through the stages...

I have an account (kilnageer@gmail.com) at https://my.noip.com/ and a number of free domains already registered. So let's use snntt57.zapto.org (which was last updated as 86.41.249.104 on Jun 17, 2026 09:27:10)

So using SSH over Zerotier I can talk to this remote Rpi and see what code it is running.

pi@drumgeely:~ $ df -m .
Filesystem     1M-blocks  Used Available Use% Mounted on
/dev/mmcblk0p2     14351 12017      1585  89% /

pi@drumgeely:~ $ sudo systemctl status apache2

Unit apache2.service could not be found.

pi@drumgeely:~ $ 

It has less than 2GB left on its 16GB microSD card and no Apache2 webserver running.

pi@drumgeely:~ $ sudo apt install apache2

pi@drumgeely:~ $ date

Sat 20 Jun 12:43:20 IST 2026

pi@drumgeely:~ $

pi@drumgeely:~ $ sudo systemctl status apache2.service 
● apache2.service - The Apache HTTP Server
     Loaded: loaded (/lib/systemd/system/apache2.service; enabled; preset: enab>
     Active: active (running) since Sat 2026-06-20 12:32:45 IST; 11min ago
       Docs: https://httpd.apache.org/docs/2.4/
   Main PID: 26473 (apache2)
      Tasks: 55 (limit: 1556)
        CPU: 337ms
     CGroup: /system.slice/apache2.service
             ├─26473 /usr/sbin/apache2 -k start
             ├─26475 /usr/sbin/apache2 -k start
             └─26476 /usr/sbin/apache2 -k start
Jun 20 12:32:45 drumgeely systemd[1]: Starting apache2.service - The Apache HTT>
Jun 20 12:32:45 drumgeely apachectl[26472]: AH00558: apache2: Could not reliabl>
Jun 20 12:32:45 drumgeely systemd[1]: Started apache2.service - The Apache HTTP>
pi@drumgeely:~ $ 

I then tried accessing this RPi using its Zerotier IP address and I saw the Apache2 landing page. So step 2) above achieved.

Next to install the noip client that will periodically inform the No-Ip server which IP address is current assigned to this Drumgeely RPi

https://my.noip.com/dynamic-dns/duc - no good for RPi

https://raspberrytips.com/install-no-ip-raspberry-pi/ - OK

So had to build and install for Rpi using above instructions then run to perform an IP update..

pi@drumgeely:~/noip/noip-2.1.9-1 $ sudo noip2 -c /usr/local/etc/no-ip2.conf

Can then see the update at:

https://my.noip.com/dns/records?jump_to_zone=zapto.org

snntt57     A    188.65.190.74    60    Jun 20, 2026 13:00:20

###TODO Will need to make this noip2 command into a systemctl service.

But the laptop web browser still doe not get the Apache2 landing page at:

http://snntt57.zapto.org/

So may need to map port 22 through the Tenda router. Unfortunately, after logging in to the Tenda portal, via the Android app, I could see the Tenda_D986A0 device and the drumgeely Rpi and Solas WiFi dongle but the portal app gave no port mapping options. 

###TODO So may need to log in to this router locally to do this! And assign a static LAN address to the drumgeely Rpi.

Or log into the drumgeely Rpi over VNC and then launch a browser to the router at 192.168.0.1

Set static DHCP address and DMZ but still cannot remote access Apache2 server. (Also set DDNS to noip http://snntt57.zapto.org/)

###PROBLEM still cannot remotely access via http://snntt57.zapto.org/ buut OK via Zerotier IP address

###SOLUTION webscrape graphical pages and republish to ShannonTownWetlands.ie website for public access.

So I will park this up for now and get the graphing software installed..

https://dash.plotly.com/installation

pi@drumgeely:~ $ mkdir dash_plotly

pi@drumgeely:~ $ python3 -m venv ./dash_plotly/

pi@drumgeely:~ $ source ./dash_plotly/bin/activate

(dash_plotly) pi@drumgeely:~ $ 

(dash_plotly) pi@drumgeely:~ $ pip install dash

Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple

###PROBLEM After lots of timeouts installing I then got a runtime error..

(dash_plotly) pi@drumgeely:~/dash_plotly $ python ./app.py 

Traceback (most recent call last):

  File "/home/pi/dash_plotly/./app.py", line 2, in <module>

    import plotly.express as px

  File "/home/pi/dash_plotly/lib/python3.11/site-packages/plotly/express/__init__.py", line 12, in <module>

    raise ImportError(

ImportError: Plotly Express requires numpy to be installed. You can install numpy using pip with:

$ pip install numpy

Or install Plotly Express and its dependencies directly with:

$ pip install "plotly[express]"

You can also use Plotly Graph Objects to create a large number of charts without installing

numpy. See examples here: https://plotly.com/python/graph-objects/

(dash_plotly) pi@drumgeely:~/dash_plotly $ 

Same code runs OK on calendula Rpi!

Tried editing xxxxx/_init_.py see:

https://stackoverflow.com/questions/69866554/trying-to-import-plotly-express-but-get-this-error-even-though-pandas-is-install

but didn't help

Moved on to install sqlite3

https://www.tech-reader.blog/2025/08/installing-and-verifying-sqlite-on.html

pi@drumgeely:~ $ sudo apt install sqlite3

pi@drumgeely:~ $ sqlite3 --version

3.40.1 2022-12-28 14:03:47 df5c253c0b3dd24916e4ec7cf77d3db5294cc9fd45ae7b9c5e82ad8197f3alt1

pi@drumgeely:~ $ 

How to use an ESP32-C6-GEEK as a WiFi Light Switch

 I wanted to allow WiFi controlled lights to be turned ON/OFF easily if someone presses a switch.

To do this I used an ESP32-C6-GEEK running micropython to monitor is GPIOx line and publish ON or OFF to MQTT topic XXX

I also made it into a presence sensor and issue an ON every 20 secs if there is WiFi disturbances

First, I went to https://micropython.org/download/ESP32_GENERIC_C6/ and downloaded the image to my board using my laptop

You can connect to the device by plugging it into the laptop and following the instructions at https://circuitpython.org/board/seeed_xiao_esp32c6/ to flash it.

I need the code to connect to WiFi SSID: Tenda_D98860 and then to the Tola Park MQTT broker. After this it should send a status every 30 secs of its uptime in seconds

Then if GPIOx goes low it should turn on teh light by posting ON to MQTT topic ...