IDTech Android SDK Guide  1.00.173
API reference for VP3300 AJ
Connecting with VP3300 AJ

The VP3300 AJ connects through Headphone jack or USB on Android. On some models Bluetooth Low Energy is available as a connection option

Connect with USB

The VP3300 AJ will be recognized as a Human Interface Device once plugged into the Android USB port. The Android must be running firmware 3.1 or greater, and it will need an Android USB host adapter cable, usually referred to as OTG. Please see your manufacturers documentation for the correct part to use. Use a standard USB-miniUSB plug to attach the VP3300 AJ (mini-USB port on left side) to the Android host adapter cable.

Connect with Audio

By default, the SDK communicates with the device through the headphone jack. No further steps required. Please note: The USB port takes priority over the audio interface. A common mistake is using a computers USB port as a source of power while attempting to use the audio interface. Doing this will disable the audio interface. If power is desired while using the audio interface, only use a power adapter as the source of USB power, not a computers USB port.

Connect with BLE

  • If Bluetooth Low Energy module is available on VP3300 (Android 5.1.1 or above is required), BLE scanning can be enabled on the Android device. Reference: Activate Bluetooth Low Energy