GreenAntz RGB to component transcoder

[PL1]

I'm guessing that Scott already knows this.

Uhhh . . . not really.  You're working FAR beyond my very basic skills in electrical engineering.   

The idea of using a PIC with built-in VCO and comparator functions to control a logic gate that turns sync processing on/off sounds promising.

Seems like the safest approach is to have the default state for that logic gate turn sync processing off and turn sync processing on only when a 15kHz signal is detected.


Scott

[Zebidee]

I'm guessing that Scott already knows this.

Uhhh . . . not really.  You're working FAR beyond my very basic skills in electrical engineering.   

Oh noes, I rely on you to call me out on my ---That which is odiferous and causeth plants to grow---!

Everything I know about electronics has been self-taught, mostly since taking up this hobby and much more since retiring. Well, I have a strong computer, science and tech background, so not entirely illiterate I guess.

The idea of using a PIC with built-in VCO and comparator functions to control a logic gate that turns sync processing on/off sounds promising.

It does, doesn't it? Not just this project - with a PicKit and a logic analyser you can do a lot of stuff. If you can do it with an arduino then you might be able to do it with a PIC or some other programmable micom instead. Smaller cheaper. Programmable microcontrollers are common in modern (and not-so modern) electronics.

But for now I'm sticking to old-skool analog electronics to get the job done.

Seems like the safest approach is to have the default state for that logic gate turn sync processing off and turn sync processing on only when a 15kHz signal is detected.

Aye it does. In addition to the LMC567 (SOIC-8) I'll use a SMD transistor or mosfet to do the V+ switching (both same SOT-23 footprint, and I have ordered both, so all good). I just have to turn on/off the final sync amplification & buffering stage, which draws only a little current, and incidentally powers the sync LED so I can delete the sync filter I'd setup for that earlier.

So, waiting for parts. I will then breadboard it, but I'm so confident enough it'll work that I've already redesigned the PCB.