I was making an airboat using arduino UNO, H-Bridge l298n, one DC motor 12V 3A, micro servo motor, an HC-05 bluetooth module and 9V battery.
I was testing part by part, it was working the code and the components. However, when I tried to test all together the avrdude problem started. After this, even testing the 'Blink', it didn't uploaded.
After this, I got a new arduino, I tested again the same code with the same schematic, the difference is my 9V battery died and I got a new one with 12V 3800mAh. The code was uploaded, and I tested 3-4 times before one of the jumpers start burning, I removed it quickly. I tested all of the components but the Arduino. This avrdude problem started to appear after that.
Then, I got another board, the same code and schematic. Uploaded, but didn't worked, after I change the schematic the circuit started to work.
However, I am worried of those two boards with the avrdude problem, the second one is heating up unlike the first Arduino. Can someone help me?
