This is an open-source ZigBee device based on the new ESP32-C6 to collect data from smartmeters using the DLMS/COSEM protocol.
Ever since I got the smartmeter "Sagemcom T-210D" with the P1 user interface, I wanted to integrate it into my ZigBee network. Since I didn't find any existing solution, I decided to develop my own.
For this project, I used the ESP32-C6-MINI-1U. I chose the version with an external antenna, since, in most cases, the devices will be mounted in an isolated meter box. And, since many of them are made of metal (Faraday cage), like in my case, I opted for an external antenna to mount on the outside of the meter box.