In the beginning I wanted to make things easy. No soldering required. As I do most observations from home I am in the range of my home Wi-Fi. The PI connects wireless to the network and power is supplied by a power adapter. Connection to the NexStar hand controller is over USB. I am using the micro-USB adapter that came with my PI Zero W  and a USB to mini -USB cable.

After finishing Instruction Step 2 you have a replacement for a SkyFi3 adapter and can control your telescope over wireless for less than $50.