In this tutorial I'll show you, How to control Arduino with your smart phone using, My app developed with app inventor 2. Step 1:Things you need Hardware ArduinoBluetooth Module HC 05/06LED220Ω Resistor2.2KΩ Resistor4.7Ω ResistorAndroid deviceSoftware Arduino IDE App Inventor 2 (for create your ... By: BlueMatter