Liliput Automatic Reverse Camera Selector

I have made a simple circuit using the PIC16F84 microcontroller which turns a liliput monitor
over from VGA mode to CVIDEO1 mode automatically when reverse gear is seleted and back to VGA
again when deselected. I have used it to switch the infra-red remote control when reverse is
selected as this way you have no extra wires connecting the monitor to the car and you don't
have to break into the case. You could connect directly on to the AV switch inside the monitor
if you wanted to. I have drawn a power supply from the control circuit to power the remote
without batteries and have put the IR emitter on flying leads in order to mount it close to the
monitor.


Circuit diagram (jpeg)

Source files for programming PIC

Circuit diagram (CAD .dwg)

Circuit diagram (PCB123 Schematic file)