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Thanks for the responses. I was flattering myself when I said my electrical knowledge was limited. In reality, when I build a pedal I am painting by numbers. I have no idea how to go about this. If it helps, I've wired up the pedal like this With serial switching between the 2 x two-gang...

How do I figure out if I need common anode or common cathode? It appears I have used a common cathode LED, so presumably I need a common anode one? But also, what do I have to do to get it to flash with the LFO speed?

Hello. First time posting here. I can't find info on this that I can understand. So I have built a Forum Vibe with two speed pots and a 3PDT switch to switch between the two pots. I want to add a bicolor LED that will indicate both LFO speed and change colour depending on which speed pot is...