Hi everyone I am doing an line follower car with a l239D motor driver shield to run the two motors that I have. I am using three infrared sensors and a 9V baterry to power the arduino UNO and the motor driver shield.
The 9V works fine and is enough to run the two motors and two infrared sensors. However when I connect the third infrared sensor the motors dont move. to solve this problem I connected 4AA batteries to the arduino jack but it doesnt make any difference I even tried removing the PWR jumper and connect the 4AA(6V) to the barrel jack and the 9V to the shield but the car doesnt move either. the car only moves when the 9V batteries are conected to the shield.
The three sensors and the motors work when the USB is connected to the arduino and the 9V battery to the shield.
I am sorry, I know that there are some other questions about this topic but i did not find my answer in any of these...
Here is a pic of my setup.
I want the three infrared sensors to work.
Can anybody help?