A DIY Test Generator...

[luRaichu]

Originally Posted by kf4rca

Edit: Didn't see any raspberry pie zeroes on Ebay for $5.

My bad, they're actually $10 at this moment. You can find authorized resellers here:
https://www.raspberrypi.com/products/raspberry-pi-zero/
There's a header for composite output, you just have to solder a connector to it.
On the software side you need to edit a config file. Many analog video standards are supported. I use NTSC-J for deeper blacks.
https://www.raspberrypi.com/document...#video-options

Originally Posted by kf4rca

Do you still not have your old DOS computer laying around?

I own two 386en and a Socket 7 PC I built from parts.
https://studioraichu.net/materials.html

Originally Posted by Tube TV

The last while I have been using one of those cheapo china deluxe android TV boxes

It's probably got malware baked into ROM. https://youtu.be/Epp-8n-_CWA&t=347