analog electronics

This article will show you how to set up two way communication between an Arduino and your Android Smartphone using Bluetooth.

Qi (pronounced as "chee") charging is an optimized inductive charging concept also known as “wireless charging,” allowing you to charge your devices wirelessly. Compatible devices’ batteries are charged by using induction transfer without requiring separate chargers, cables or adapters... Simply place your compatible device on top of the wireless pad and watch your device charge. Finally--an end to cords!

Linear regulators such as the AP7380 series can offer convenience, simplicity, and flexibility in terms of input voltage.