PuWi: Pushbuttons with WiFi!

# What's this?

This is an electronic button design for quiz games. The idea is to build a host button and up to four player buttons and play as shown in the video: https://www.youtube.com/watch?v=L-j9yM4ZkZQ
I use a SMD MMBT2222 transistor and
Buttons have an internal battery (that can last for several hours) and communicate via WiFi, so no wires are needed to play the games. On the software side I have also implemented a Telegram bot server on the host button, so game progress can be displayed on any Telegram client!

# Building

The heart of each button is an ESP8266 nodemcu-like board with a 18650 lithium battery. So in addition to printing the case, you will have to wire to it the button and the NeoPixel LEDs.

## Required parts

For each button you want to build, you need:

* The 3D printable case, composed of 4 parts: top, bottom, LED window (for the battery charge indication) and neopixel window (for the status LED bar).
* 1x 60 mm button: https://www.aliexpress.