Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I ...

You have an ESP8266 board like the Wemos D1 ... learn a few tricks for doing sleep Arduino environment, and even calculate how long your specific battery could last. You’ll need a TP4056 ...

For those following along at home, [WhisleyTangoHotel] provides a hand-drawn diagram to show how everything ... up his blog post by providing his ESP8266 Arduino source code, which offers an ...