10k = 100%
3k3 = 300%
I’m not really sure what you mean by ‘switch on each MOD pot’.
The pots control the GAIN of a whole row , so that you can set the ‘brightness’ of a channel of RGB (+inv) if you patch it in such a manner.
Got my PCB and panel and lm6172’s today. Waiting on my pots (which I ordered today) before I put it together. I’m looking forward to this! I’m going to use it mostly for color mixing so I have R, G, and B colored knobs.
Looking at doing a similar mod on my end.
If i understand you, you need to switch in a divider across all three pins (Not just a resistor) equivalent to the pot being set to 1/3, i.e. 6k7 vs. 3k3 with the 3k on the grounded side.
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Okay. I should be able to use 3PDT switches for this. I’ll take a look at the schematic.
Thanks.
@reverselandfill I may have missed something obvious, but you didn’t release a mechanical drawing for the front panel by any chance? (Even just the front panel gerber drill file would do wonders when putting together my own panel)
https://www.reverselandfill.org/diy/video-matrix-mixer/
at the bottom of the page are now the panel files. Gerbers and Eagle designs
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I received my PCB and board, many thanks!
Just wanted to let you know there is a little error on the BOM i downloaded from your site. It is missing c4 from the 100nf list and lists c4 as the first electrolytic cap. Just wanted to clear that for any other builders.
Thanks for the great project!
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I already pm’d him about it but well spotted!!
I have updated the BOM. Thanks for the correction!
Note: It was just a typo, so the kits do not miss these parts. lucky !
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I finally built mine today, for color mixing mainly. Works great! Thanks @reverselandfill
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