I put a tail camera on and connected it to the EFIS. "Check wheels down". I was simply curious since the EFIS can support it. Perhaps its only utility is to check the condition of the wheels in flight.
I purchased a cheap license plate camera for $20 on Amazon. Picked up a 3/8-16 to M8x1.24mm hex thread adapter from McMaster Carr to affix it to the tail tie down. For my GRT HXr EFIS, the Hauppage USB-Live2 is also required (only use model 122000 with "SL-610-V8.1-ENG" on the box as the newer model doesn't work since Hauppauge didn't release an associated Linux driver). This is a USB video capture device.
Here's what it looks like installed. All it takes to quickly take it off is one flick of the wrench and removing one of the inspection plates to unplug it. Maybe 2 minutes of time.
