Skip to content

OpenDTU Fusion

grafik

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-OnBattery 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.

This board has always shipped with ESP32-S3 modules with at least 8 MB of flash storage, making this board compatible with the most recent versions of OpenDTU-OnBattery.

OpenDTU-OnBattery Add-On

grafik

The CAN/Iso shield is a generic add-on PCB that was specifically designed to allow connecting to OpenDTU-OnBattery peripherals such as VE.Direct devices and a Pylontech battery.

Firmware

Firmware builds for the generic_esp32s3_usb variant are available in OpenDTU-OnBattery's GitHub Release Page.

OpenDTU-OnBattery also ships an OpenDTU Fusion-specific device profile (pin_mapping.json) in the code repository.

Board Documentation

The board specific documentation is available over at the OpenDTU Fusion documentation repository.

How to Obtain

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