This have BLE to have control commands.
Line following with QTRSensors.
This is used to calibrate the sensors no engine.
Robot using QTRSensors to follow a line with BLE commands (not working as expected).
Calibrations of the encoders with ble.
This robot also can be controled using commands on BLE or using DroidControlCenter android application.
This robot is similar with towengines_w_encoders_ble_calibrations but has also a TOF VLX501 in front to not bumb into forward obstacles.
2enginesbleenc is the version which now have been moved to it's own repository raspberryPiDroids