Wiring a 3PDT with bypass and LED

jim93 · Post by **jim93** » Mon May 23, 2011 12:21 am

I am working on a Klon(Trying to see what the fuss is about) project from a different forum(not sure if I can post layout) but am confused about how to wire a battery to it

This is how I wired it but its not working and I am not confident it is right. Is it?
The Bypass works

James · Post by **James** » Mon May 23, 2011 5:44 am

Why is most of it obscured by a large white rectangle?

jim93 · Post by **jim93** » Mon May 23, 2011 6:03 am

The vero layout is from a diy stomp box forum and I wasnt sure if I could post it here in its entirety. If mods think its fine.
I could post the whole thing.

Post by **Mike** » Mon May 23, 2011 7:25 am

Did you doctor this yourself? The switch wiring looks wrong to me.

You can't just connect the FX output and the buffer out together like that. I guess you're trying to make the Klon TB, and so dump the buffer, right?

jim93 · Post by **jim93** » Tue May 24, 2011 6:39 am

Is the 9V connected right?

I could just cut the buffer out and be fine?

NickS · Post by **NickS** » Tue May 24, 2011 7:38 am

Please post a link to the DIY stompbox forum article so we can see the whole schematic/layout. At the moment I can't make sense of it.

Post by **Mike** » Tue May 24, 2011 7:48 am

NickS wrote:Please post a link to the DIY stompbox forum article so we can see the whole schematic/layout. At the moment I can't make sense of it.

Agreed.

But you're also switching 9V on a 3PDT which I never do, it's just bad practise.

Connect the 9V to the LED anode and the 9V input the board.

Connect the LED cathode via a current limiting resistor to the top right lug on the switch
Connect the middle right lug of the switch to ground.

Use an input grounded scheme and you'll have quieter (no pop) switching.

However (and this is a big one) - the Klon eats batteries. Get a power supply you planet hater, jim.

jim93 · Post by **jim93** » Tue May 24, 2011 5:27 pm

Im just using the battery until I get it up and running.

I cant post a link because its one of those member hidden pages on freestompboxes.

timhulio · Post by **timhulio** » Tue May 24, 2011 6:24 pm

Yeah it's a buffered bypass. You only need a DPDT. Connect the LED on one side of the DPDT. Use the other half of the DPDT to switch between effect out and buffered output to the output jack.

NickS · Post by **NickS** » Wed May 25, 2011 8:16 am

jim93 wrote:I cant post a link because its one of those member hidden pages on freestompboxes.

I believe at least Mike, Phil O'Keefe and I are members.

Post by **Mike** » Wed May 25, 2011 11:27 am

I still want to know who drew that out connecting the FX output and buffer out together - that's batty

NickS · Post by **NickS** » Wed May 25, 2011 12:21 pm

I've just been looking at Martin Chittum's schematic and what you've listed has a couple of errors. For a start, "LED Switch Ground"is connected to the live side of the clipping diodes - it needs to go to ground. Disconnect the wire and resistor "buffer out" - you don't want to connect the buffered clean signal and the XF output. Follow Mike's advice to put the 3k9-or-adjust-to-taste resistor on the 9V side of the switch.

jim93 · Post by **jim93** » Thu May 26, 2011 1:21 am

Im going to try to get this going tomorrow.

jim93 · Post by **jim93** » Sun May 29, 2011 1:53 am

Rewired the 3PDT as per Mikes suggestion the Bypass worked but when I hit the switch it made a a constant beep which has its volume controlled by the volume knob so Im going to make an audio probe and follow the signal. Does anyone have an idea based on the constant beep.

timhulio · Post by **timhulio** » Sun May 29, 2011 8:30 am

Buffered bypass. Use a 2PDT.

NickS · Post by **NickS** » Sun May 29, 2011 5:53 pm

timhulio wrote:Buffered bypass. Use a 2PDT.

I believe he wants to eliminate the buffer and make it TBP?

jim93 · Post by **jim93** » Sun May 29, 2011 9:57 pm

I need to go buy a 2PDT which I think I will if its not the actual circuit but rather the switching causing problems

timhulio · Post by **timhulio** » Sun May 29, 2011 10:16 pm

You can test if the circuit works by breadboarding (or even just soldering) the input and output jacks directly to the effect in/out respectively. Leave the buffer out dangling for the moment. That'll at least tell you if this is gonna fly before you worry about switching.