Arduino Bluetooth(HC-06) and relay(KY-019) to control the appliances connected to 220V.
On/Off and Interval time can be assigned easily.
Before run the app, activate the Bluetooth pairing the smart-phone and HC-06 bluetooth module.
Please note that a short circuit or electric shock when connecting the KY-019 relay.t control with code folding, minimap, external JSON highlighter and color scheme files, etc.