Muff's Modules & More

jumunius · Posted: Wed Apr 25, 2012 9:32 am Post subject:

As an afterthought, if you reverse your multimeter probes, you will get voltage readings with +/- values flipped. The one time I did this and didn't realize what I'd done, I remounted my power header in reverse and plugged it back in before thinking through what might have happened. d'oh!

I fried at least one IC, maybe more (haven't been back to troubleshoot further since I don't have replacement chips on hand).

So in case it needs being said, don't be rash when messing with polarity. Don't reverse polarity of your power connector unless you really know that's the issue. In fact, it might be safest to do some spot checking (check that your TL072 is mounted in the right direction, etc) before even powering on again.

mckenic · Posted: Wed Apr 25, 2012 9:41 am Post subject:

Thank you VERY, VERY much jumunius!

I'm going to do some troubleshooting this afternoon - as you said, double checking polarity (THINK Im ok but never the less!), the mounting of the power connection, the diodes, the TL072 and after all that switch the ground/signal on my jacks just to check!

Thank you very much for your ideas! REALLY very much appreciated! I will of course post back in a bit! thumbs up

mckenic · Posted: Wed Apr 25, 2012 9:44 pm Post subject:

Please dont laugh... on 2nd thoughts do if you want I dont mind as - ITS WORKING! Woo Hoo!

Friggin had my pots wired backwards - I feel like an idiot!!! very frustrating

But the GREAT thing is I didnt fry anything or do anything silly It's peanut butter jelly time!

There are a few loose connections as when I jiggle pots I get ground hum and drop-outs but that is sortable.

Its a little low volume wise, is that related to the 'accent'? Can I just run 2 wires from level or the 12v to the 'accent' as currently (sic) I wont be using accent?

I used the Factory decay 47k as that is what I had to hand - how low can I go here anyone know please? I'd love to have the choice to have it as is now but also to go squealing crazy self-oscillation...

Anyway - thank you all for putting up with me! Im bloomin THRILLED!

WOO HOO!

jumunius · Posted: Wed Apr 25, 2012 10:06 pm Post subject:

bsmith · Posted: Wed Apr 25, 2012 10:21 pm Post subject:

I don't have mine paneled, but have checked it out with 12v supply running the +12 over to the accent in as an offset to keep it up and it worked fine. I guess what might work would be running the voltage over to the normalling post on the accent jack (on a switched mono jack), so if you wanted to use something besides the +12 it would shut off on the accent in as soon as something was plugged into that jack.

mckenic · Posted: Wed Apr 25, 2012 10:22 pm Post subject:

... and I have Erthenvar 'switching' jacks that I had right EXCEPT for the output - sending to the switch pin instead of to the signal pin! very frustrating

Thanks jumunius! thumbs up

Will tidy this up and ask questions then! Thanks mate!

mckenic · Posted: Wed Apr 25, 2012 10:34 pm Post subject:

Thank you bsmith!

Will try that and report back!
thumbs up

tony d · Posted: Wed Apr 25, 2012 11:04 pm Post subject:

Emalot · Posted: Mon Apr 30, 2012 2:50 pm Post subject:

My PCB arrived!! w00t

mckenic · Posted: Mon Apr 30, 2012 8:51 pm Post subject:

Just a quick post back to say THANK YOU!

Tying the 12v to accent works wonderfully and Im 100% up and running Woo Hoo! Im still new enough to diy and have enough gaps in my knowledge to be surprised and delighted when things work out so well!

Thanks for all the help and patience thumbs up

mckenic · Posted: Thu May 03, 2012 7:10 pm Post subject:

Woo Hoo!

I learned SO MUCH doing this project - thank you very, very much bananeurysm!!! thumbs up

I learned, pots are awkward to put on a panel! smile

I have some ABS so decided to do a panel. Its JUST that little bit skinny but its ok as the kick will live to the left of my case where there is a little 1hp or so gap - this will allow for the pots which had to be mounted sideways smile

Lots of little silly things but MAN! Im a happy bunny! Woo Hoo!

tony d · Posted: Thu May 03, 2012 7:57 pm Post subject:

Awesome man !

I've definitely been enjoying mine.As i said before i don't have an 808 to make any comparisons (nor do i care) but i really think it sounds great.

mckenic · Posted: Thu May 03, 2012 8:13 pm Post subject:

Bring on the next one! Cowbell? Rimshot? Claves?

bananeurysm · Posted: Wed May 09, 2012 6:34 pm Post subject:

Rad! Just checked in after not watching for forum for awhile. Awesome to see so many thumpin drums out there!

Either the 909BD or the Simmons SDS3 (general purpose drum) will be next. I don't have an eta - but I'm working on em both. Troubleshooting my 909BD pcb, and prototyping the SDS3.

808 Clap, rimshot, and 606 hats are all on my wishlist. But I'm getting WAY ahead of myself there. smile

Also reve - I don't know if anyone really replied to your questions about 'accent' wiring consensus. But afaik most people have been building these with the accent simply tied high. You can always remove the wire if you wanna sequence volume later.

<edit> Also I do still have some PCBs left. Shoot me a PM if you still want some.

Emalot · Posted: Sat May 19, 2012 11:37 am Post subject:

I just finished my 808 Kick drum module, and it's a really nice module!!!
I have TR606 and i love it but Kick is really soft on this. Now i have a BIG 808 kick and the mix of both is nanners

bananeurysm · Posted: Sat May 19, 2012 3:37 pm Post subject:

Rad! Glad it's workin out! That was exactly my setup when I first designed the board. (606 + 808kick module).. I've since gotten an 808 - but I'm thinking about going back to the 606 + 808kick for gigging. . .

negativspace · Posted: Sat May 19, 2012 3:41 pm Post subject:

606 + 808 kick, check! (TipTop's; I haven't built the board I got from you yet.) I always preferred the 606's hats to the 808s, although the 808 has a much better ride.

I've got a DrumDokta in there too, tons of fun with percussion in that little combo.

mono-poly · Posted: Sat May 19, 2012 3:52 pm Post subject:

Do you got pcbs avaible?

Sds3 clone would be awesome!

julian · Posted: Mon May 21, 2012 9:10 am Post subject:

I am thinking about making this panel -

Would anyone else be interested if i do?

One thing im not sure of though -

The design is for myself - i am not sure about using the word 'Roland' on panels for other people?