This tutorial generally explains how to go about building a wireless game pad on the cheap to avoid buy expensive adapters or pads. No programing required!
The SparkFun Pi Servo Hat allows your Raspberry Pi to control up to 16 servo motors via I2C connection. This saves GPIO and lets you use the onboard GPIO for other purposes.
In this tutorial, we are going to build our own LED ring for photography using an RGBW LED ring, a small Arduino-compatible board, and a potentiometer to make a cool and adjustable LED ring light.