Ballista

Ballista is an app that I built for a colleague of mine, which enables them to run sport shooting competitions and practice sessions from an Android tablet. In addition to the application itself, I also built a device using an Arduino and relays that sends the firing command to the throwing machines.

The app has 2 different game modes, Flurry and Mixed Bag, each with their own unique set of controls.
Flurry throws random sequences of birds with rules determined by number of players.
Mixed Bag throws user-created sequences of pairs when given the throw command.

While the current version in use is about 5 years old now, and fairly dated, it still works well for its group of users.