Using a breadboard to tryout pickup configurations

  • Thread starter Thread starter nalo1022
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nalo1022

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At the request of cakire82 I am posting a method I am currently using for testing out pickup configurations without constantly soldering, unsoldering, and then resoldering the pickups. I use a bread board with the pickups wires plugged into it. For my setup am using a basic volume-tone-output circuit with wires running to the board so I can also audition different tone caps. I drew up some pictures quickly in MSpaint with some examples.

the breadboard
http://i933.photobucket.com/albums/ad179/nalo1022/breadboard.jpg
examples of how to jumper the connections. The purple lead is hot
http://i933.photobucket.com/albums/ad179/nalo1022/example.png
 
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Re: Using a breadboard to tryout pickup configurations

Cool. I often use crocodile clips to test out set ups, try parallel or coil swaps etc, before soldering. The bread board is a nice neat solution though.
 
Re: Using a breadboard to tryout pickup configurations

Dang. I thought that this thread was going to be about a pickup testbed guitar like the one Leo Fender used. Now, that really did look like a breadboard. :D
 
Re: Using a breadboard to tryout pickup configurations

@Mark Le Comte Thamks. I used to use crocodile clips too but I found them a bit cumbersome especially when trying to quickly switch between configurations. The breadboard has been great on my current project which is a 3 humbucker LP with a 5 way rotary and individual coil splits on each pickups. There are 18 different combinations and I can quickly switch between them and not chew up the pickup leads or pots.

@Funk fingers I am actually considering building a testbed guitar (and have been for awhile) and having the breadboard built into it on the front maybe behind a plexiglass door. I want to make it so I can slide in any configuration of pickups quickly but still have the height remain adjustable. I think Seymour Duncan actually had something like this for dealers at some point.
 
Re: Using a breadboard to tryout pickup configurations

Great, useful idea indeed. Post some pics once you complete the testbed guitar.
 
Re: Using a breadboard to tryout pickup configurations

lol well if I ever do make one I'll be sure to post pics of it.
 
Re: Using a breadboard to tryout pickup configurations

Hey Nalo 0122!

It's the ingenious generosity like yours that has made the Internet a place where we find the answers before we had the question. This altruism in the Internet never gets the media credit it deserves. Certainly a major factor in declining media interest.

Thanks.

I've got a similar breadboarding capability. However, I'm looking to do some J-Bass PUp on-board preamp development. Do you have any ideas or suggestions like opamp (discreets i.e. FETs don't make sense to me) schematics, component sources e.g. concentric short-shaft audio taper 50 k pots etc., shielding/grounding etc.?

Again, thanks.
 
Re: Using a breadboard to tryout pickup configurations

Netspin I'm going to ask you the same thing I ask anybody looking for assistance. What are you looking to achieve? Do you want a simple preamp to simply boost your signal? Do you want EQ? How many controls do you want/can have? Like any project planning is a key step, and doing it thoroughly and properly can save lots of time, money, and hassles. here is a list of websites that I browse when trying to work out ideas aside fromt he forums here:
http://www.diystompboxes.com/smfforum/
http://projectguitar.ibforums.com/
http://www.geofex.com/
http://www.ampage.org/
and lets not forget the ever-powerful google. I find if you type in exactly what you want, like "DIY onboard bass preamp", you can generally find a lot of information on your topic. Looking at available products is also a great way to get ideas. If you want to PM me some info, so as not to clog up this thread, I'm always glad to help anyone with their projects.
 
Re: Using a breadboard to tryout pickup configurations

Wuda guy!

You're in the pocket!

Well, I'll definitely check out those URL's. And thanks. Frankly, I had realized I might have gone off the thread with that question.

But I did review your professionally organized diagrams mentioned above.

Just a few points.

GIVEN: http://i933.photobucket.com/albums/ad179/nalo1022/examples.png

For reference purposes allow me to "number" the views left to right as 1 - 5. I'm assuming that:

a) the plugin strips adjacent to the "red" and "blue" bars on the breadboard are electrically continuous for that color even though they're grouped in blocks of 5 for the length of the "breadboard" connector AND red is NOT connected to blue in the board. For this discussion they'll be referred to as the red and blue bus bars respectively.

b) the pick up is composed of dual identical coils with 2 leads per coil. The four resulting leads have been color coded as "red", "green", "black", and "gray". (It's not clear from the diagrams how they represent their coil's winding.)

c) given: http://i933.photobucket.com/albums/ad179/nalo1022/breadboard-1.jpg
the "red" bus is ground and the "blue" bus is undefined.

From figure 1's explanation the coils are identified as red/green and gray/black where the coil winding senses are: red = black and green = gray.

From figure 4, black|gray = north; then red|green = south

My questions:

1) Re. 2, 4: Where is that "lime" colored jumper going? Or what are you intending to show? [POSSIBLY - 2: lime wants to go to the red bus not blue; 4: lime also goes to red and not blue]

GIVEN: http://i933.photobucket.com/albums/ad179/nalo1022/breadboard-1.jpg

1) You NEED to ground (show a symbol) AT the guitar body where the black wire is connected to the Output Jack sleeve. Otherwise, as shown, the tone control has no effect and the volume control will merely introduce a variable resistor in series with the PUps.

Remember: Critics are always one step behind.

FINALLY: Nice job on the diagrams. So much closer to the real thing.
 
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Re: Using a breadboard to tryout pickup configurations

@Netspin Thank you very much. I love constructive criticism. I have updated the pictures and links. Must have had a brain fart when I was working on them. I hate it when there is a diagram online with minor errors on it that would probably cause a lot of problems for someone who was too savvy with electronics, and no one updates it. In the future if these images are looked at they should be easier to understand.

@jafo Thanks! That is another great website, and I'm kinda embarrassed I forgot it as I go there a lot as well. On that note I did think of some others.
http://tonepad.com/
generalguitargadgets.com
 
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