My son and I recently released a Bluetooth controller app on Google Play! This application was created as a father/son project to fuel my son’s education and love of technology & robots! We developed the app using the MIT App Inventor 2 platform (appinventor.mit.edu).
Here is a quick demo video: youtube.com/watch?v=GwXhhML6C-k
You can get more info here: www.sjdavisrobotics.com
The Sparki code and documentation can be downloaded from GitHub: github.com/sivads/SJD_BT_Control
We’ve had a lot of fun doing this!
Steve and Jon