This is app to control your Arduino Car (If you doesnt have Ultrasonic do not use Auto-pilot)! We have UltraSonic by JRodrigesTech,because Raspberry PI worked only UltraSonic by JRodrigoTech. You can try to use UltraSonic by Eric Simões (But i think that this app is universal :) ) I was inspired by project of Vincenzo Scullino on ai2.appinventor.mit.edu/?galleryId=4747415622123520. .ino file you will find on my helper's (OlegBURm) Github (This project will be named "ArduinoCarProject"). Subscribe on my Russian YouTube Channel on this URL - https://www.youtube.com/channel/UC2n0YYTTWUQu6sk0j32yxWQ
UltraSonic by JRodrigoTech you can find here -> https://github.com/JRodrigoTech/Ultrasonic-HC-SR04