Quote:
Originally Posted by luRaichu
Well, it's an RF modulator all right, and it works. The pinout is:
1 - Ground
2 - Audio
3 - Video
4 - RF output
5 - +12v
6 - Ground
For my use case I put -12v on ground. You must have 12v for optimal picture quality. Which also means you can run this module off a car's cigarette lighter but that's besides the point.
Too bad +12v accidentally came across my video source during experimentation and wrecked the Raspberry Pi's composite output. Luckily, HDMI can be used and this unit only costs $15. Still feels stupid though!
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This is why on any test source even on service grade test pattern generators that are designed to be connected to B+ energized video circuits I tend to put a 630V cap on series with the hot lead...I rather waste the effort of adding a DC blocking cap than troubleshoot something that did work before I started using it to fix something else.