Can somebody check my offboard wiring please?

Started by Vexd, January 25, 2014, 12:19:17 PM

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Vexd

Hi, I've been trying to build a Zvex Woolly Mammoth clone, using the following circuit and offboard wiring diagrams (given links because i dont want to spam images in this post too much heh):

Circuit http://i.imgur.com/39Jl9EZ.png

Offboard http://i.imgur.com/IKXsRLO.gif

I ran into a couple of problems along the way, firstly I forgot 1 track cut (fixed) and secondly I got the tip and the sleeve on the output jack mixed up (fixed.)

I still have a problem, I get a bypassed signal, but I don't get any signal when the circuit is switched on. This is the same using either a battery or the DC jack.

I'm feeling confident that my circuit on the stripboard is okay, but I just want to check my off board wiring first.

I'm not really sure where the ground wires are to go, and I've got the ground wires from the Wool and Volume pots to the Output jack sleeve (poor connection, but should still work i think)

Can somebody check the wiring for me please and tell me any errors? Any help is greatly appreciated, thanks!

I've tried to get a good picture and annotated them here, if it's hard to see please say so and I'll try take better pictures:




pappasmurfsharem

Assuming in seeing the picture correctly your 9v really shouldn't be on the switch

Here is an example of proper wiring

Pay attention to the horizontal position of the lugs

"I want to build a delay, but I don't have the time."

Vexd

Quote from: pappasmurfsharem on January 25, 2014, 12:52:56 PM
Assuming in seeing the picture correctly your 9v really shouldn't be on the switch

Here is an example of proper wiring

Pay attention to the horizontal position of the lugs



hi thanks for the quick reply, i dont want to add an LED to this box, where does the LED connection in your diagram go?

pappasmurfsharem

Quote from: Vexd on January 25, 2014, 01:20:54 PM
Quote from: pappasmurfsharem on January 25, 2014, 12:52:56 PMAssuming in seeing the picture correctly your 9v really shouldn't be on the switch

Here is an example of proper wiring

Pay attention to the horizontal position of the lugs



hi thanks for the quick reply, i dont want to add an LED to this box, where does the LED connection in your diagram go?

The Led goes to the "Led -" on my diagram. But if don't want an led just just wire it the same way but leave the top middle lug empty .

Or if you have a DPDT stomp switch you can use that. 3PDT is only necessary when you want an indicator led however a 3pdt allows you to ground the effect input when in bypass which can be useful

Also pins 2 and 1 in the wool pot should be connected together.

And you have your volume pin 1 labeled as connected to gnd but I don't see a wire in pin 1 of volume
"I want to build a delay, but I don't have the time."

haveyouseenhim

It seems you are shorting your power when you turn on the effect. The red wire on the bottom left of the stomp switch and the purple one on the lug above it need to be taken out and it should work for you.
  • SUPPORTER
http://www.youtube.com/haveyouseenhim89

I'm sorry sir, we only have the regular ohms.

pappasmurfsharem

Quote from: haveyouseenhim on January 25, 2014, 02:17:31 PMIt seems you are shorting your power when you turn on the effect. The red wire on the bottom left of the stomp switch and the purple one on the lug above it need to be taken out and it should work for you.

Yeah he will need to cut that wire but also his board GND appears to be only connected to the switch and not actual gnd

Scratch that I see the black ground to board now. Yes cut the red 9v wire to the switch
"I want to build a delay, but I don't have the time."

Vexd

ok thanks guys, i will try removing the red wire from the switch.

I've got the 2 lugs on the wool pot wired together, it's not clear in the picture.

pin 1 of the volume pot is wired to the sleeve of the output jack as is the pun 2 of the wool pot, is that correct? (the ground wires on the circuit diagram)

i've only got a 3dpt unfortunately, although grounding the effect input whilst in bypass does sound good, what does that actually do and why is it advantageous? thanks!

Vexd

update, removed the red wire connection from the switch to the circuitboard, still no change  :-\

pappasmurfsharem

Quote from: Vexd on January 25, 2014, 03:04:42 PM
update, removed the red wire connection from the switch to the circuitboard, still no change  :-\

Just to make sure you removed the RED wire from the BOTTOM left, not the Bottom MIddle correct?
"I want to build a delay, but I don't have the time."

nocentelli

Does your power supply still work, and did you kill the battery you're using whilst shorting it?
Quote from: kayceesqueeze on the back and never open it up again

Vexd

Quote from: pappasmurfsharem on January 25, 2014, 04:38:04 PM
Quote from: Vexd on January 25, 2014, 03:04:42 PM
update, removed the red wire connection from the switch to the circuitboard, still no change  :-\

Just to make sure you removed the RED wire from the BOTTOM left, not the Bottom MIddle correct?

Yeh, removed the bottom left red wire.

Quote from: nocentelli on January 25, 2014, 04:39:59 PM
Does your power supply still work, and did you kill the battery you're using whilst shorting it?

Power supply and battery still work :)

pappasmurfsharem

I tried to match colors.

So is this what you have?

EDIT: Daaaamnit I missed the Purple WOOL pot wire, but that shouldn't matter
"I want to build a delay, but I don't have the time."

Vexd

Quote from: pappasmurfsharem on January 25, 2014, 05:13:11 PM
I tried to match colors.

So is this what you have?

EDIT: Daaaamnit I missed the Purple WOOL pot wire, but that shouldn't matter


yep, just about, this is what ive got:


pappasmurfsharem

Apart from the purple wire to the switch is no longer needed.

And your edited picture shows the purple on row 2 not 3 (although your board looks like its in 3) it appears that your wiring is correct, so the problem may be in the board.

Can you take pics of the bottom of the board.
"I want to build a delay, but I don't have the time."

Vexd

Quote from: pappasmurfsharem on January 25, 2014, 06:31:46 PM
Apart from the purple wire to the switch is no longer needed.

And your edited picture shows the purple on row 2 not 3 (although your board looks like its in 3) it appears that your wiring is correct, so the problem may be in the board.

Can you take pics of the bottom of the board.

yeh wool purple wire is on 3rd row, mistake in the pic, forgot to remove the switch purple wire as well, will try that, if after that the wiring should be ok, it'll be the board. I'll try removing the purple switch wire and post board pics after work, thanks for the help so far!

pappasmurfsharem

Quote from: Vexd on January 26, 2014, 04:30:34 AM
Quote from: pappasmurfsharem on January 25, 2014, 06:31:46 PM
Apart from the purple wire to the switch is no longer needed.

And your edited picture shows the purple on row 2 not 3 (although your board looks like its in 3) it appears that your wiring is correct, so the problem may be in the board.

Can you take pics of the bottom of the board.

yeh wool purple wire is on 3rd row, mistake in the pic, forgot to remove the switch purple wire as well, will try that, if after that the wiring should be ok, it'll be the board. I'll try removing the purple switch wire and post board pics after work, thanks for the help so far!

Since you've cut the red wire to the switch the purple switch wire no longer does anything. It's not really hurting you since in either position of the switch  it's not connected it probably the board or the DC jack
"I want to build a delay, but I don't have the time."

bluebunny

You should connect your "floating in mid-air" ground collection to the input jack screen, along with the ground connection that's already there.  Not sure why you have the battery -ve going to the DC jack: normal practice is to connect the battery -ve to the input jack ring (removing the input jack turns off the battery).  DC jack -ve just goes to the common ground connection on the input jack screen.
  • SUPPORTER
Ohm's Law - much like Coles Law, but with less cabbage...

The French connection

Take your pots off the box and check if it resolves the problem...Never solder your wires to pots throughout the hole...if the wire is too long it will touch the box and shorted the signal...Also, take a exacto knife and go through every rows of your vero to remove any solder bridges possible between tracks. this is a thing to do everytimes you use vero...you'll save time this way. If all that does'nt resolve the problem, take your multimeter out and follow this:
http://www.diystompboxes.com/smfforum/index.php?topic=29816.0

Good luck!  :icon_wink:
I know, but the pedal i built does not boost...it just increases volume!
My picture files:
http://www.aronnelson.com/gallery/main.php/v/French+connection/
http://s193.photobucket.com/albums/z4/letournd/Pedal/

LucifersTrip

first, lemme say it'd be great if more people posted clear, labeled pics when asking for troubleshooting...but...

"I'm feeling confident that my circuit on the stripboard is okay"

still, always best to check BEFORE offboard wiring so that can be eliminated as a problem if troubleshooting is necessary.

once again, start with circuit voltages and someone'll probably pinpoint the problem quicker.

always think outside the box

pappasmurfsharem

Quote from: bluebunny on January 26, 2014, 11:46:16 AM
You should connect your "floating in mid-air" ground collection to the input jack screen, along with the ground connection that's already there.  Not sure why you have the battery -ve going to the DC jack: normal practice is to connect the battery -ve to the input jack ring (removing the input jack turns off the battery).  DC jack -ve just goes to the common ground connection on the input jack screen.

His battery ground connect to the DCjack gnd then that runs to the ring. His battery will still disable when a jack isn't inserted
"I want to build a delay, but I don't have the time."