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Solis 4G mini logger

Features

  • MQTT
  • Webinterface
  • Write data in an influxdb-database
  • Send data to PVOutput

Used Hardware

  • Wemos d1 mini
  • Max485
  • 2 leds (blue, yellow)
  • 2 100 Ohm-resistors

Schematic

Schematic

Steps to build - software

  1. Install VSCode and platformIO
  2. Download or clone this repository
  3. Rename the file src/config.h.example to src/config.h
  4. Configure it in src/config.h
  5. Compile, upload and test your device.

More detailed instructions: https://10k-resistor.github.io/Solis4Gmini-logger/instructions/detailed/

Status leds

Status Yellow Blue
Inverter off off Led flashes (0,5s on 20s off)
Inverter on off on
sends data via mqtt on on
Sends data to pvoutput Led flashes (0,5s on,0,5s off) on
Connects with wifi Led flashes (0,5s on, 0,5s off) off
Wifi connection failed On off

Known problems

  • ESP sometimes crashes while ntp sync