2 layers33.7 × 97.8 mm

HAN ESP TSS721
UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported
29 parts470
KiCad boards from 3 GitHub repositories tagged “ams”, the most starred first; open any of them in PCBKit.

UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported

roarfred/AmsToMqttBridge
Minimalistic system to read AMS/HAN data from electrical meter

hagronnestad/mbus-han-kaifa
⚡🔌💻 DIY electronics and code to read data from my KAIFA MA105H2E AMS smart meter.

UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported