HEAT PUMP CONTROLLER / ESP32 APPLICATION
ESP-NOW Heat Pump
ESP32 heat pump controller with dual-board ESP-NOW architecture — outdoor Controller (relays+sensors) + indoor Remote (display+WiFi+MQTT+HA)
About this project
About this project
Two ESP32 DOIT DevKit V1 boards, one inside the outdoor unit and one on an indoor wall, replace a heat pump's control board and talk over ESP-NOW without a router. The outdoor half reads four NTC sensors, drives four relays for compressor, fan, four-way valve and pump, and runs startup, shutdown, defrost and protection logic by itself; status goes out every 500 ms. The indoor half carries a 128×64 ST7567 LCD, five buttons, a menu of parameters up to U81, WiFiManager, MQTT discovery for Home Assistant and the master copy of settings. Both build as separate PlatformIO environments. The relay side switches live 230 V loads, and the warning is explicit: only a licensed electrician should install it.
From the README
From the README
- Feature
- Sends full status to Remote every 500 ms
- Build
- pio run -e controller --target upload
- Limit
- must match router WiFi channel
Hardware
Boards: ESP32
ESP32-class board. Verify the exact board revision, display, power source and wiring in the upstream build guide.
Media credit & rights
Upstream project media · rights remain with its owner · Credit: amir684
Screenshots from the upstream README. Code and firmware were not executed. License notices are included.
View original source ↗ Copyright & removal · Reviewed
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