Check the Ahoy DTU Wiki for the exact wiring diagram between your ESP and the nRF24L01+ radio module.
For advanced users, esptool is the most robust way to flash binaries manually. Post-Installation Setup ahoy dtu firmware download
When you download the zip archive, you will see multiple files. Choosing the correct one depends on your hardware: Hardware Type Recommended Binary *_esp8266.bin Ideal for Wemos D1 Mini; limited to older inverter models. ESP32 *_esp32-wroom32.bin More powerful; supports larger setups and future features. Custom Boards *_generic.bin Used for specific DIY PCB designs. How to Install Ahoy DTU Firmware Check the Ahoy DTU Wiki for the exact
The easiest method is using the AhoyDTU Webinstaller in a Chrome or Edge browser. Just connect your ESP via USB and follow the on-screen prompts. ahoy dtu firmware download