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OpenDTU Fusion


This board was developed by @markusdd and the help of the OpenDTU/ahoy Discord community. It integrates all the components that are necessary to run OpenDTU on 5.5cm x 5.5cm, namely a ESP32-S3-WROOM-1U module, and the complete RF paths for NRF24 (HM series) and CMT2300A (HMS/HMT series) communications. So this PCB can interface with all supported inverters and uses the most modern ESP32-S3 chip.

Generic builds for the esp32-s3-usb are available in the OpenDTU Release section. The board specific documentation is available over at the OpenDTUFusion Documentation repository:

For info on where to buy this board refer to the Where to get section.

OpenDTU also ships a OpenDTUFusion specific pinout JSON in it's repository which can be found here: