Power
The most important component in our robot is the On-Off switch. Indeed, when this complicated device is not used properly, it can lead to suicidal robots that will attempt a 3ft-drop test.
Even though we were using two 7.2V batteries in series, many of our components required only 5V to function. Thus, we had to use a voltage regulator to lower the voltage and keep it constant:
We also used a voltage divider to monitor the voltage of our batteries: