Please check out my new project for things around the house, and planned product.
The Foofy Weensy is Arduino/Teensy/Esp8266 compatible development boards that has a built in Single Cell Lipo Management, and can be powered and charged from a 6v Nominal Solar cell, Ideal for remote location control and automation. Built in Esp8266 WIFI module and PCB antenna and Micro SD card holder.
Check out project updates and further details at https://hackaday.io/project/6308-foofy-weensy-teensy-esp8266.
Comments and improvements welcomed.