Pogo Pin Protector

As an accessory to [this AVR ISP Pogo Adaptor](https://www.tindie.com/products/nsayer/avr-isp-pogo-adapter-kit/), I created a little pogo pin protector to prevent the pins from becoming bent.

The tolerances are pretty tight, so I had to ream the pin holes with a 1.5mm screwdriver tip so that everything would line up properly.

Note: depending on how flush your pogo pins are, you may need to adjust the `pin_height` variable in OpenSCAD. Ideally, you should measure from the board along the pin to the center of the pin head. The pins need to be able to spring to make a good contact, but the pin head should not be sticking out of the protector.

See this on [Github](https://github.com/xxv/pogo_pin_protector)