OpenDTU CMT2300A Case

BOM required :

• ESP32
• CMT2300A dev board with “E49-900M20S” chip
• OLED 0.96" screen “SSD1315”
• Dupont connectors
• External “868MHz~915MHz Antenna” with an IPEX4 <> Female SMA cable

Use “Snug” support for both part and add “build plate only” for the case :

Wiring :

Configuration :

• Get the pin_mapping from the officiel Github : https://github.com/tbnobody/OpenDTU/blob/master/docs/DeviceProfiles/nodemcu_esp32.json
• Add the custom block from the “pin_mapping_custom.json” file here
• Select it from the OpenDTU WebUI