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rstcologne / ESP-Home-Fairland-Heatpump

Control Fairland Heatpumps without Tuya
Creative Commons Zero v1.0 Universal
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Compatibility with other Tuya comatible Heatpumps #2

Open chrisguen opened 4 months ago

chrisguen commented 4 months ago

Hello, has anyone tested if this project works with other wifi/tuya enabled heatpumps like this one?

raspitoaster commented 4 months ago

Hi, I am testing with a "Evolution Baseline" - but without success yet. There are two RS485 sockets on the circuit board. The #1 is empty, the #2 has the front panel (display/buttons) and WiFi connected. Using the YAML here on a NodeMCUv2 (ESP8266/4M) connected to a RS485-2-TTL converter results in many "Duplicate modbus command found" warnings and (only) silly sensor readings. I tested the setup (NodeMCU/ESPHome/RS485-2-TTL converter) connected to a second RS485-2-TTL converter and a RASPI with pyModSlave simulating a modbus device. This works perfectly, but there are many posts around that claim ESP8266 with software serial will not work at all and ESP32 with hardware serial must be used.

raspitoaster commented 4 months ago

Update: just tried with an ESP32 and hardware serial ... same result.