Growatt ShineWiFi-X with Solax-Modbus using esphome_modbus_bridge

ESPHome
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Cooked this esphome yaml together to re-flash my Growatt ShineWiFi-X dongle.

I’m using it with the Solax integration on a Growatt MOD 4000TL3-XH, but it should work on any model.

I re-used the led’s to:

  • Green → TX
  • Red–> RX
  • Blue–>Status ;If no clients, just a 1Hz heartbeat, otherwise a 100ms pulse for every client (with a 3s interval).

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For flashing the firmware it is required to jump GPIO0 with gnd during power up.
You can either flash by USB of TTL

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PS: I advice to take a backup of your current ShineWifi-X firmware, in case you ever want to go back :thinking:

To backup:

esptool.py -b 115200 --port com3 read_flash 0x00000 0x400000 original_firmware.bin

To Restore:

esptool.py --port com3 write_flash 0x00000 ./original_firmware.bin

Great thanks @rosenrot00 for writing the esphome2modbus bridge!!

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