Wiring a battery snap without dc jack

[3dsmatt]

Hello....I've had a look around and am unable to get any clarification on wiring a pedal with only a battery snap.

I'm doing the Musikding "The factory" and I'm unable to get it to work. I think it may have something to do with the wiring of the battery snap not being wired properly. I think it might be something to do with the grounding, But this is totally speculative.

This is the wiring diagram.

http://diy.musikding.de/wp-content/uploads/2013/06/factorywire.pdf

If anyone could give me some pointers that'd be wonderful.

The other issue might be the pots. I got some of these...

http://g02.a.alicdn.com/kf/HTB1EiQtIpXXXXbNXpXXq6xXFXXXj/-SA-Taiwan-RV09-type-potentiometer-Black-1K-2K-5K-10K-20K-50K-100K-1M-100PCS.jpg_640x640.jpg

I'm assuming the terminal are 1(ground) 2(output) 3(input) as per usual. If so I can't see where there could be any other issues...

Thanks for any help!

Matt.

[vigilante397]

Welcome to the forum My first questions would be, are you using stereo jacks on your build? If so, make sure the negative (black) lead from the battery snap goes onto the ring of the jack. If not your battery is going to drain pretty fast but you would need to wire it to the sleeve (negative) terminal.

With the pots, those should be just fine as long as they are the same values.

Hope this helps, and if it doesn't, definitely check out the "general debugging" thread so you know what we'll need to help

[feddozz]

Have a look at this page here

I cannot see your attachments at the moment. Did you post a picture of your built. Or a diagram of your writing. That would help.

[3dsmatt]

Welcome to the forum My first questions would be, are you using stereo jacks on your build? If so, make sure the negative (black) lead from the battery snap goes onto the ring of the jack. If not your battery is going to drain pretty fast but you would need to wire it to the sleeve (negative) terminal.

With the pots, those should be just fine as long as they are the same values.

Hope this helps, and if it doesn't, definitely check out the "general debugging" thread so you know what we'll need to help

Thanks for the reply. Firstly, the input is stereo and output is mono. The negative from the battery snap is currently soldered to the ring of the stereo input. From what I understand are you saying that the negative battery snap should also be grounded to the sleeve of the stereo input ??

Thanks again....it's really nice to get such quick and helpful responses..

Actually, after checking out Feddoz's response and the link...it looks like I have it hooked up ok. .....hmmm. I have currently - battery to ring. +battery to board 9V. Sleeve grounded.

The troubleshooting continues..

[PRR]

> unable to get it to work

This tells us nothing.

Does it picket your factory? Howl? Whisper soft hiss? Smoke? Eat batteries? Eat your lunch? What about when you poke a finger at live terminals? (Should be safe with just 9V battery, though it may get LOUD hum.)

[3dsmatt]

> unable to get it to work

This tells us nothing.

Does it picket your factory? Howl? Whisper soft hiss? Smoke? Eat batteries? Eat your lunch? What about when you poke a finger at live terminals? (Should be safe with just 9V battery, though it may get LOUD hum.)

"unable to get it to work" ......I felt the other 23 sentences with links was where the diagnostic evidence was most prevalent.....

At the moment the pedal is producing what I would best describe as a continuous oscillating noise whose pitch and volume can be altered through nob twisting.

Also, quite interestingly, the volume pot ON THE GUITAR is changing the intensity of the LED on the pedal!! Great for a little light show when playing live.

I will try the fingers thing later on.

Love,

Matthew.

[feddozz]

I think we have multiple problems here that you need to separate and resolve.

1. Did you ever get it to work? on breadboard or before adding a foot switch? I usually test the board on it's own without the complication of the foot switch, the LED etc... Make sure the board is working

2. Understand the wiring and apply

3. Maybe more...

One thing I would check is the footswitch, is it the first time you wire one? The wiring diagram you posted does not explain the orientation of it and I wonder how you wired it. That means if you rotate it 90 degrees from its correct position and then wire it, it gives you unwanted results.

Nevertheless, I think you need to move in small steps and secure ground. And conquer a little a bit a t a time. Ask yourself these questions: are the components ok? Is your soldering ok? Work your way up. Sometimes you cannot check a single component but there are ways to protect some components with sockets for example.



>I'm assuming the terminal are 1(ground) 2(output) 3(input) as per usual. If so I can't see where there could be any other issues...

What are you referring to? the pots?


>"unable to get it to work" ......I felt the other 23 sentences with links was where the diagnostic evidence was most prevalent.....

PRR is only trying to help you and give you a pointer on what we need to know to support your troubleshooting. For example you never said that you were getting that LED trick, and about the squealing noise.


Send pictures of your build, it'll help.

[duck_arse]

if the guit vol pot is controlling led brightness, it suggests you are shooting supply up the lead to the guit, and its pot. this may, under extreme duress, emit smoke. a bad thing.

it also suggests bad footswitch wiring. check your input jack for DC voltage.

[3dsmatt]

if the guit vol pot is controlling led brightness, it suggests you are shooting supply up the lead to the guit, and its pot. this may, under extreme duress, emit smoke. a bad thing.

it also suggests bad footswitch wiring. check your input jack for DC voltage.

Roger

[3dsmatt]

I think we have multiple problems here that you need to separate and resolve.

1. Did you ever get it to work? on breadboard or before adding a foot switch? I usually test the board on it's own without the complication of the foot switch, the LED etc... Make sure the board is working

2. Understand the wiring and apply

3. Maybe more...

One thing I would check is the footswitch, is it the first time you wire one? The wiring diagram you posted does not explain the orientation of it and I wonder how you wired it. That means if you rotate it 90 degrees from its correct position and then wire it, it gives you unwanted results.

Nevertheless, I think you need to move in small steps and secure ground. And conquer a little a bit a t a time. Ask yourself these questions: are the components ok? Is your soldering ok? Work your way up. Sometimes you cannot check a single component but there are ways to protect some components with sockets for example.



>I'm assuming the terminal are 1(ground) 2(output) 3(input) as per usual. If so I can't see where there could be any other issues...

What are you referring to? the pots?


>"unable to get it to work" ......I felt the other 23 sentences with links was where the diagnostic evidence was most prevalent.....

PRR is only trying to help you and give you a pointer on what we need to know to support your troubleshooting. For example you never said that you were getting that LED trick, and about the squealing noise.


Send pictures of your build, it'll help.

Pictures - .....thanks......no offence to your buddy.

[brianq]

Go to beginner project, this should answer your question.

[peterg]

The wiring for the output jack is backwards. That could explain the light show.

[feddozz]

My umble advice is to keep the naked length of the pot connection to the board shorter. You risk to get short circuits.

On the other hand could you please tell me what is the yellow cable that goes from board to 3PDT? and what is the green from 3PDT  to board?

[peterg]

green is circuit in. yellow is circuit out

[feddozz]

Ok then, 3PDT wiring has to be reviewed as it contains a few mistakes.
Follow brianq's picture or my link.
And do not forget to swap the wiring of the output jack.
Hope it sorts it out.

[Gargaman]

if the guit vol pot is controlling led brightness, it suggests you are shooting supply up the lead to the guit, and its pot. this may, under extreme duress, emit smoke. a bad thing.

Man, this is cool! Gonna build something like that..