I have been trying to connect 5V from an external source to the primary elevator board and when I move the switch from OFF to TB it doesn't turn on. The current goes high and the voltage goes low (it measures 160 ohms without power connected when I move the switch to the TB selection too). There is no issue when i connect via USB and have it on that switch.
I am trying to build a robotic car for school following poorly written instructions and have been unable to get the tower to work off ~5V supplied via batteries. As of right now I can only get ti to function with the USB cable connected to my computer. I need it to work through the J10 connector and the batteries.