lately, I’ve been working on turning a line following robot into one that is controlled by an arduino. I took out the main board and line following sensor, as they did not work. I replaced one of the dual AA battery packs with a 9v to power the arduino, and left the other to power the motors. I installed a switch between the 9v battery and the 2.1mm jack for the arduino, and hotglued it in. I have ordered a l293d motor driver on eBay, and this will soon be controlled. I wil but the l293d in a board, then hotglue that board in, below the arduino’s platform, with a female header breaking out the necessary control. I also ordered a boarduino, which may be optimul for this project.