If you're looking for a controller to control your DIY projects with a Bluetooth module, then Bluetooth RC Car Control DIY may be the one for you. This application from NECO is free and available for Android.

Bluetooth RC Car Control DIY is mainly designed to control DIY cars made with an Arduino, motor driver, Bluetooth module HC-05 or HC-06, and two mini electric motors. The app allows you to control your projects with a Bluetooth module easily.

The app is easy to use, and the interface is user-friendly. The app is perfect for those who love to build and control DIY projects. You can download the schematic and Arduino sketch from the provided links. Overall, Bluetooth RC Car Control DIY is a great addition to your DIY projects.