It is 2:43am in the RCA lab and our car runs on battery power. It turns out we needed to use the barrel connector instead of Vaux on the J1 connector to power the HC12, and needed the correct jumper configuration (we found the datasheet for the APS12 board). We also needed to give it a separate power supply (currently a 9V battery, the HC12 has an internal voltage regulator called VR1) because otherwise neither it nor the motors got enough current to work properly. We'll put together the whole thing fancily later. Just thought we'd update after actually getting success.
Moore Display Case
6 years ago