“In this Instructable I’ll show you how to get started with Bluetooth Low Energy and and How you can control your projects with it. This will be basic and I’ll try to keep it simple for beginners. I’ll be using AT-09 BLE v4.0 which is a HM-10 compatible Bluetooth module. BLE stands for Bluetooth Low Energy , It is based on Bluetooth 4.0 technology. So this module won’t work with older phones. Click Here to know more about BLE. If you don’t have HM-10/AT-09 module you can use regular old HC-05. So lets get started…”