HC-05 Keeps Disconnecting

Other Hardware Sensors
11

2 things I didn´t like on this article:

  1. it ignores the fact that HC-05 logic level is 3.3V, which requires a voltage divider on the HC-05 Rx line.

  2. it tries to control the motor speed using the direction pins on the L298N driver.

Considering that you have to show this car tomorrow (It's not my job to scold you, but I think you started this work too late...), I would try to connect the HC-05 Rx/Tx using SoftwareSerial in other Arduino pins, keeping 0 and 1 to talk to the Serial Monitor. This will help you to see what's happening and debug the sketch.

Yes it connected... wait. No it didn't