P1 Dongle Pro (ESP32) module (mhendriks): returning no values or with x1000 multiplied values

[douwevanommen]

Describe the bug

When configuring the mhendriks P1 Dongle Pro (ESP32) with the template 'slimmelezer', it returns no values at all.

After switching to the 'slimmelezer-V2-template', it does return values, multiplied by factor 1000.

Steps to reproduce

1. Configure EVCC with template 'slimmelezer' in evcc.yaml
2. Save and restart EVCC
3. Result: no grid power in EVCC UI ('0 kW')
4. Changing EVCC config with 'slimmelezer-V2'-setting
5. Save config and restart EVCC
6. Expected result: grid power measred in kW's
7. Actual result: grid power is measured, but values multiplied by factor 1.000.

Configuration details

'slimmelezer' template:
  - name: my_grid
    type: template
    template: slimmelezer
    usage: grid
    host: 192.168.xx.xx 
    scale: 1

'slimmelezer-V2' template:
  - name: my_grid
    type: template
    template: slimmelezer-V2
    usage: grid
    host: 192.168.xx.xx

Log details

Log in 'slimmelezer' configuration:


[site ] DEBUG 2025/10/26 11:49:56 ----
[alfen ] TRACE 2025/10/26 11:49:56 modbus: send 00 0a 00 00 00 06 01 03 01 58 00 02
[alfen ] TRACE 2025/10/26 11:49:56 modbus: recv 00 0a 00 00 00 07 01 03 04 00 00 00 00
[lp-1 ] DEBUG 2025/10/26 11:49:56 charge power: 0W
[alfen ] TRACE 2025/10/26 11:49:56 modbus: send 00 0b 00 00 00 06 01 03 01 40 00 06
[alfen ] TRACE 2025/10/26 11:49:56 modbus: recv 00 0b 00 00 00 0f 01 03 0c 00 00 00 00 00 00 00 00 00 00 00 00
[lp-1 ] DEBUG 2025/10/26 11:49:56 charge currents: [0 0 0]A
[my_pv ] TRACE 2025/10/26 11:49:56 GET http://192.168.20.80:8123/api/states/sensor.solaredge_current_power
[my_grid] TRACE 2025/10/26 11:49:56 GET http://192.168.20.70/sensor/power_delivered
[my_pv ] TRACE 2025/10/26 11:49:56 {"entity_id":"sensor.solaredge_current_power","state":"1480.51","attributes":{"state_class":"measurement","unit_of_measurement":"W","device_class":"power","friendly_name":"solaredge Huidig vermogen"},"last_changed":"2025-10-26T10:42:58.534573+00:00","last_reported":"2025-10-26T10:42:58.534573+00:00","last_updated":"2025-10-26T10:42:58.534573+00:00","context":{"id":"xxxxx","parent_id":null,"user_id":null}}
[site ] DEBUG 2025/10/26 11:49:56 pv 1 power: 1481W
[site ] DEBUG 2025/10/26 11:49:56 !! solar production: accumulate add my_pv 0.000W power (was: Accumulated: 0.012kWh updated: 2025-10-26 11:49:26 +0100 CET)
[site ] DEBUG 2025/10/26 11:49:56 !! solar production: accumulate moved my_pv from 0.012 to 0.025
[site ] ERROR 2025/10/26 11:49:56 grid power: unexpected status: 404 (Not Found)
[alfen ] TRACE 2025/10/26 11:50:10 modbus: send 00 0c 00 00 00 0b 01 10 04 ba 00 02 04 00 00 00 00
[alfen ] TRACE 2025/10/26 11:50:10 modbus: recv 00 0c 00 00 00 06 01 10 04 ba 00 02
[httpd ] TRACE 2025/10/26 11:50:11 GET /api/system/log



Log in 'slimmelezer-V2' configuration:

[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/power_consumed
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-power_consumed","value":846,"state":"846 W"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/power_produced
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-power_produced","value":753,"state":"753 W"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/power_produced_phase_1
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-power_produced_phase_1","value":0,"state":"0 W"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/power_consumed_phase_1
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-power_consumed_phase_1","value":846,"state":"846 W"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/power_produced_phase_2
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-power_produced_phase_2","value":423,"state":"423 W"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/power_consumed_phase_2
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-power_consumed_phase_2","value":0,"state":"0 W"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/power_produced_phase_3
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-power_produced_phase_3","value":330,"state":"330 W"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/power_consumed_phase_3
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-power_consumed_phase_3","value":0,"state":"0 W"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/current_phase_1
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-current_phase_1","value":4,"state":"4.0 A"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/current_phase_2
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-current_phase_2","value":1,"state":"1.0 A"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/current_phase_3
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-current_phase_3","value":1,"state":"1.0 A"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/energy_produced_tariff_1
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-energy_produced_tariff_1","value":173.623,"state":"173.623 kWh"}
[my_grid] TRACE 2025/10/26 11:42:02 GET http://192.168.20.70/sensor/energy_produced_tariff_2
[my_grid] TRACE 2025/10/26 11:42:02 {"id":"sensor-energy_produced_tariff_2","value":502.866,"state":"502.866 kWh"}

What type of operating system or environment does evcc run on?

HomeAssistant Add-on

External automation

• I have made sure that no external automation like HomeAssistant or Node-RED is active or accessing any of the mentioned devices when this issue occurs.

Nightly build

• I have verified that the issue is reproducible with the latest nightly build

Version

v0.209.3

[andig]

Please show

evcc meter --log trace,db:error

which value is wrong?