ESP32 code for a diy Solar Energy Router to manage overproduction
Based on the code from Le Profes'Solaire.
Features:
- Support two dimmers and one relay
- MQTT with Home Assistant auto-discovery
- Screen display
- Embeded webserver for monitoring
An enclosure is available at https://www.thingiverse.com/thing:6003867 to be printed. The height as not been calculated for jumper wire, but for soldering wire, which is more secure.
The ESP32 send the message 0x01, 0x03, 0x00, 0x48, 0x00, 0x0E, 0x44, 0x18, which mean:
| Adress | Function | Address of first register to read (16-bit) | Number of registers to read (16-bit) | Cyclic Redundancy Check (CRC) |
|---|---|---|---|---|
| 1 | 3 (Read) | 0x48 (72) | 0x0E (14) | 0x44, 0x18 |
ModbusMechanic is a Java multi-platform tool that allow to communicate with ModBus.
Here is the config to talk directly with the JSY-MK-194 :
But it does not work with the message to read power measures. It is not a problem as it will works in the pv router.