I bought an OPi Zero, the extension board, a 1/8-to-rca audio/video cable to plug into the AV jack of the extension board, and a 16 GB SDHC card. Loaded Armbian Stretch onto it, plugged in ethernet without any of the AV stuff just to start. The Pi doesn't even show up on my router settings so I cannot access it via Putty or any other SSH program. I turn it off, attach the extension board and av cable, and plug it into the TV in the hopes that I can start working on something with a USB keyboard...nothing shows up on the TV. I'm hoping that's a software issue and not an issue with the actual ex