the_duckchild

also - @HybrisBehemoth - what solution are you going with to power it? I am pretty sure option E "one PSU" is the right choice, but I can't decide if it makes sense to fool around with a 7 pin DIN and cutting the lead off a 12V PSU..... or maybe laser cutting some kind of acrylic disc for the case so it can just be a normal barrel jack plug and can use a normal PSU.......

not for me either actually p.s. sorry for the thread hijacking, but it seemed easier to keep it in one place while we're both building! I actually started with the control surface... which I think is probably the "wrong" way round... but seemed easier. Just need to get the LEDs in now and will be finished with that board.

ah, great, thanks! will just stick with those then. Am about to make a real start on the base pcb :)

Another quick Q... hope no-one minds the questions! - has anyone got the passive mixed output from J70 hooked up, and if so what resistors did you end up using for a decent output level?

thanks, that's what I figured... just thought I'd be 100% on it. I suspect this might be the explanation for some slightly odd filter behaviour on another project I tried out before deciding on this..... I'll never get that time back!

Finally got started on this, almost got all the parts together and got all the diodes and buttons onto the control surface..... on question I wonder if anyone might be able to ease my mind about.... There seems to be a little bit of online confusion as to whether the caps for the SID (8580) need to be 2.2nf or 22nf? anyone able to confirm for certain? Wilba's docs says 22nf, but there seem to be multiple* other sources suggesting 2200pf... which is 2.2.nf right? I assume 22nf is right as it appears more places, and this would certainly explain why the filter on one of my chips didn't seem to be filtering anything much when I built a little usb controlled synth with it...... has someone just missed a zero off? * http://www.sidmusic.org/sid/sidtech3.html https://www.waitingforfriday.com/?p=661 thanks!

Yes, rainbow blinky barf is what I am after really, Mario Kart Rainbow Road in synth form. The two pin rainbow colour change ones was what I meant - I was slightly concerned that the forward voltage might change as it changes colour and make things a bit illegible.... I guess I could just test that though thinking about it now. I suspect I may eventually regret the decision due to it NEVER STOPPING, but on the other hand, it's going to look ridiculous and insane and I think that might well be worth it. :) Thanks for the encouragement in this folly, I was expecting a lot of "oh I wouldn't do that"

this is a totally silly question..... but just in case anyone has an opinion........ am I mad to use colour change LEDs for this project? I figure the answer might be that it make more sense for the indicator buttons, but it would be really silly to do it for the matrix.... but maybe it's just a stupid idea all round.

I'm just starting this too, so thanks for all the advice on this thread (including where to get the rocker switch!) That Control surface guide is brilliant Hawkeye, makes me much more confident I can do this!