New Freifunk OpenMPPT hardware based on ESP32 with ISEMS firmware and WiFi

Freifunk has developed a new solar MPP tracking solar charger with build in WiFi and we have developed ISEMS software based on FreeRTOS and Nodemcu for the ESP32 chip that it is now based on.

The power consumption is just 0.6 W under full load when operating as an accesspoint and 0.3 W when operating as a WiFi client.

Hardware prototype and software are already working fine, but the final hardware will have an additional UEXT header, because the community has asked us for the opportunity to add external sensors.