This app is all about easily giving you as much control as possible.
Sending data to Arduino projects over Bluetooth isn't always easy, so that's what this is all about. There are four buttons for fast communication (Forward, Reverse, Left, Right) as well as the ability to send entire strings to the Arduino.
The Forward, Left, Right and Reverse buttons will send (ASCII) 1, 2, 3 and 4 respectively. The Arduino by default 'reads' ASCII characters as their Decimal equivalent, so the Arduino 'receives' 49, 50, 51 and 52.
To combat this problem when attempting to send strings, a 'translator' has been included so you can see what the Arduino will see. As you enter in ASCII characters that you want to send, their decimal equivalent will be displayed to the side, so you know exactly what will be received. Then when you press "send" it will send.