So I’m going to be shrinking down the Lumazoid to fit into a smaller space based on a Arduino Pro Mini (328p, https://www.sparkfun.com/products/11113). For the POTs, are they regular 10K POTs? So I can use a smaller trimpot as long as it’s 10K?
Either that or I’ll have to re-write that bit of the code to use momentary buttons to increment/decrement or loop through the possible settings. Doable if I have time, but I may end up not.
I believe I won’t need the oscillator or power circuitry stuff as that’s already on the mini board, likewise most of the audio jacks stuff since I’m going to use an electret mic. Would I still need the R4 and C7? Using an adjustable gain mic like https://www.amazon.com/gp/product/B00K9M6S1O
Yes, the pots are 10K, and trimpots will work, but I have found cermet trimpots to have much less “resolution” and values jump around a lot. They don’t have a smooth transition of resistance like a larger pot.
If your audio input only has 1 channel, then you don’t need the summing circuit (R4, R5). You do need C7, as this capacitor blocks DC current.