I spent this session building out the complete schematic in KiCad, focusing on component integration and system protection. I laid out the Arduino Mega, mapped out all the pin configurations, and wired up the core sensor suite, which includes the GPS and compass module, the LiDAR, and the CSI camera. I also integrated the RC receiver circuit so the rover can be fully operated via a remote control system.

With the main schematic finalized, I started designing a custom PCB HAT that will sit directly on top of the Arduino. This will keep the wire management incredibly clean and prevent any loose cables from disconnecting while the rover is moving. To protect the electronics, I also integrated a physical kill switch and a fuse into the power lines so nothing gets fried when the entire system is powered up.