This is a quick and dirty implementation of a bluetooth obd2 reader / tuner.
Video demo: https://photos.app.goo.gl/vx4BpjTq6GaqwW466
APK for download: https://drive.google.com/file/d/12mbbD84NFPLMG2s3jbdI1yLpc7GtyfCz/view?usp=sharing
Run
flutter runor
flutter build apkto build an android apk.