madbeanpedals::forum

Projects => General Questions => Topic started by: muddyfox on December 06, 2013, 12:33:25 PM

Title: Snow White Autowah
Post by: muddyfox on December 06, 2013, 12:33:25 PM
Gotta question for ya peeps...Trying to do a Snow White layout and referencing the two schematics on Harald Sabro's site:

http://revolutiondeux.blogspot.com/2012/07/mad-professor-snow-white-auto-wah.html

All pots seem to be reversed here. For instance, sensitivity. On top schematic pin 1 and wiper are connected to opamp output. On bottom schematic it's pin 3 and wiper to opamp output. So the pot is just wired backwards. Same with all the pots. Which schematic should I follow?

Also, on the top schematic... what's with the A1:A, if the opamp is unused why bother with powering it and adding three more components?
Title: Re: Snow White Autowah
Post by: stevie1556 on December 06, 2013, 12:53:27 PM
Check out the Autobahn I the Extra Projects Section. It's a SWAW, I just used MBs layout for mine. Haven't done all the offboard witing for it yet though, but I believe the pot orientation is correct on his schematic.

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Title: Re: Snow White Autowah
Post by: muddyfox on December 06, 2013, 01:07:11 PM

Excellent!

Completely missed that one...