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I need some help - Nevermind :D

A project log for zynthia - sequencer synthesizer

using a 40106, 4051 and a 4029 to make some noise, following the Logic Noise series on the blog

davedarkodavedarko 04/19/2015 at 17:520 Comments

There are 2pins of the CD4029B that I've each connected to a SPDT switch allowing me to toggle between HIGH and LOW. The weird part is that when they both are connected to VCC the 4029 stands and when both are connected to GND the whole circuit turns off. Anyone any ideas?

There are schematics out there where GND and/or VCC go directly to the pins and I found one schematic where there are switches with 47k pull-ups for 9V. I've tried 10k for my 5V set but the 4029 wouldn't switch the channels of the 4051 anymore.

Or maybe it's just broken.

Fixed: I feel so stupid.... so what could it possibly be, if it only works when GND AND VCC are connected to the pins? I haven't connected the circuit to my GND connection, so the 4029 did that when I had my selections made... now I can switch forward and back and from binary to decimal. wooohooooooo!!!!!

Here's a picture of what I had to debug, it looks all the same after a while...

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