This video will describe how to power a Microcontroller/Sensor circuit over a twisted pair cable and have data return over the same twisted pair. Any microcontroller circuit can be modified with a few extra components to enable this feature. Scamp3: https://www.tindie.com/products/johncatsoulis/scamp/ https://udamonic.com/what-is-a-scamp.html Garage door sensor video: https://www.youtube.com/watch?v=CdpjvQUqqL8