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Messages - Shnake

#1
OK,

All wired up.  I didn't shrink all the wrap down just yet.

Interesting problem...

The box works perfectly when I have a 9v battery attached.  When I plug it in nothing.  Nothing at the box at all.  Funny think is I have a daisy chain plug from the AC converter so I can hook a bunch of pedals up to one AC converter.  If I plug in the pedal and the mini amp I am using for testing all is fine until I plug the 1/4" cable from the stomp box into the amp.  Then is shuts everything down.  I've tried it plugged in with and with out a battery, no change.

I thought that I might have a problem with the wiring on the DC jack but I can't see where that is.  I've run it against the diagram several times and all looks good.  I have run my multi meter over it and and all the conections that conect to it on both the positive and Negative sides all good.

I am wondering about the amount of resistance I am running over the LED's.  The LEDs I have came with 200 Ohm resistors.  The design calls for a 1K resistor.  I took the suggestion from "mjg" and connected two 200 Ohm resistors in serial (so 400 Ohms of resistance) to the lamps to dim them a bit.  Is is possible that the extra 200 Ohms of resistance is actually causing the switch to open when connected to the 9V converter?

I ask because the resistors are connected directly to the second Positive lead of the 9V jack.

I'm also wondering if since the box is metal and I have connected all of the sleeves from the jacks together and to the 9v jack (and the battery) have I created a ground loop once I connect the jack and the 1/4" cable to the amp?

I'm also getting a "POP" when I switch between jacks so after I get this worked out I'll test it with the resistors over the jacks.

Any help would be great.

I've posted a photo.  It's still messy I haven't moved the wires around.
#2
Thanks That makes sense...I'll connect them then shrink wrap them.
#3
Hi,

I made an error in my last post...the resistors I have are 200Ohm.  NOT 200k.  The packaging says 200 and I just ran the codes on hobby-hour.com, definately 200 Ohm.
I'm going with blue and green.

The blue specs out at 465-470nm 3.0-3.4v, 3.2 Typ, 24mA, 13000 mcd
The green  is 520-525nm 3.0-3.4v, 3.2v Typ, 24mA, 20000 mcd

Given that should I use two resistors, or one for both?  I'm thinking just one because only one led will be lit at a time.  The switch will see to that so I should only need one 200 Ohm resistor.

If two, Can I connect them together?

If so serial or parrallel (I'm thinking if two are necessary they will need to be in serial because I am essentially combining resistance values (200 Ohms + 200 Ohms = 400 Ohms of resistance to the LEDs total.)?  Parallel keeps the resistance the same but changes the voltage correct?

Joe
#4
 :o

Ok, I have hit a bit of a stumbling block.   And I have a clarification question...

So first the stumbling block.
The diagram requires a 1K resistor for the LED's.  The LED's I am using came with 200k resistors.  I have 100k 1/4 and 1/2 watt resistors from other projects.  I have no 1K resistors.   So can I substitute either the 200k resistors or the 100K resistors.  I'm thinking the wattage of the resistors really does not matter because the circuit is so low powered even the 1/4 watt is likely overkill.

Ok on the clarification side...

The stereo 1/4" jack has three contact points.  Tip, Ring and Sleeve,  In my case I am using the Ring as my switch to close the circuit.  So even though it will be in contact with the  same part of the 1/4" connector as the sleeve (since I will not be using a stereo jack) I am good because I'm only running it to the negative battery and 9volt power for the LED's.  Is that correct?

Thanks
Again!!!
#5
Thanks again a lot of great info. help and resources!!!
#6
Thanks I will,

I haven't done anything like this since high school and that was over 35 years ago. LOL  If this goes well I may purchase one of the stomp box kits and put it together for my Son.
#7
Thanks sonny!!!

You are talking about the resistors on the jacks correct?

If so, I'll do it with out them.  If necessary i'll alligator clip them on to test it.  If it's better with I'll add them if not I won't.

#8
HUGE thank you!!!

It won't work...but I found it on the interwebs...LOL

I may be describing it incorrectly...I got it from what appeared to be a pretty good source so I decided to add a picture of what I have.  If still no good I have your layout which is great!!!

I did see the one at beavis but it does not show the 9v connections or the wiring to use the stereo jack as an on/off switch.
#9
Hi all,

I am purchasing a 3PDT switch that I will be using to set up my A/B switch.  The place where I am purchasing from sells a PCB for the switch.

My goal is to have an A/B switch with two LED's to show which output is active.  It will be powered by either a DC jack or 9V battery.  If the DC jack is being used it will cutoff the 9V battery.  I am also wiring a 1/4 watt 100K resistor to the tip and sleeve of each output jack to (hopefully) eliminate any popping when engaging the switch.  The Input jack will be a stereo jack that will be used as an on/off switch.  When a cable is plugged in to the input jack it will be on when it is removed it will turn off.  Stomp box is metal.

What I am confused about is how to use the PCB for the switch with the wiring diagram I have. 

The diagram I have shows the following:

The switch has 9 poles.  The Tip lead from Output 1 runs to the Upper left pole.  That pole is then connected (jumped?) to the lower left pole.  The Tip Lead from Output 2 runs to the lower left pole and that is connected to the upper right pole on the switch.  The Center Right pole on the switch is connected to the Tip of the Input jack.  The Center Top pole is connected to the short side of LED 1.  The Center Center pole is connected to the sleeve of the Input Jack then to Output jack 2, and it is connected to the Right Most center pole.  The Center Bottom pole is connected to the short pole of LED2.  The Output Jack Sleeves are also connected together and the black lead from the DC Jack   (The run goes from sleeve of output one to sleeve of output two to the DC Jack.  A resistor (1K) is connected to the long side of the LED's and to the DC Jack.  The DC Jack cutoff lead is run to the + battery lead.  The - Battery lead is run to the Ring of the stereo Input Jack. 

So, questions...How do I wire the PCB board so it makes all the jumps I need?  Second I was planning on using 2 LED's mounted in a bezel with a resistor and shrink wrapped wires. So a self contained unit for my LED's

Here is a link to the PCB.   http://www.bitcheslovemyswitches.com/#!/3PDT-Wiring-Board/p/39208323/category=10252302

Any help you can provide would be great!  I have posted this on another board but was told that this is a great friendly environment by Lawrence at BLMS. 

Thanks!!!