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  1. SparkyCal

    Back to the Breadboard

    I am sure it is not the 3.3 capacitor, as it works fine when I insert it in the breadboard build. I think it is the wiring, that I plan to look at later. I will report in. I think I know how to build this circuit and have done so successfully many times now, due to the help I got here. One...
  2. SparkyCal

    Power supplies

    Thank you
  3. SparkyCal

    Power supplies

    Thanks Harald and Martaine for the pics and explanation. I think I understand. However, one question always leads to another. I hear the concept of ‘swing’ used all the time. What does swing mean. Does it mean being a able to send slightly different voltages or current to two different points...
  4. SparkyCal

    Back to the Breadboard

    Thank-you Harald. I think I found the problem, and then discovered another problem I recently bought new guitar jacks because I was out of them. These jacks with three prongs arrived. Turns out I wired the In jack incorrectly. When I tested it with a multi meter for continuity between the lug...
  5. SparkyCal

    Back to the Breadboard

    I really hate to bring this up, but..... As you know, I built this circuit correctly (finally). I built it two more times after that, and it worked. Now, I tried building it with greater care, and with a view toward making it look tidy, and it does not work. The op amp is getting all the right...
  6. SparkyCal

    Power supplies

    Thanks to all for your responses. Very helpful. @AG- I understand what you are saying relative to the op amp circuit, however, I was trying to imagine what a dual power supply might look like- physically. If I understand correctly, as per what has been written in this thread, ( and I do have...
  7. SparkyCal

    Power supplies

    I’m wondering what it means for a power supply to have a single positive supply, and not a negative one. I have always seen power supplies with two leads: a positive and a negative. Is there another variation? thank you
  8. SparkyCal

    Back to the Breadboard

    I can't pretend that I understood that, but I can say that the unit sounds great. Has a lot of range, for some reason.
  9. SparkyCal

    Back to the Breadboard

    I based it on this stamenet you had made on the previous thread. I think I mentioned before that the value of C23 (the input capacitor) is way too high at 470nF then it passes earthquake frequencies down to 0.34Hz that might clobber the signal. 10nF would reduce 16Hz and lower, 4.7nF would...
  10. SparkyCal

    Back to the Breadboard

    Hi guys. I will re-read your replies when I have time to truly think about them. In the interim, I just plugged in the pedal again and tried all these different variations of tone, gain and volume settings. I was really amazed on the range of sounds this little pedal can produce. It seems to be...
  11. SparkyCal

    Back to the Breadboard

    Hi Guys- yes, I know you can hardly wait, so I am unveiling the first prototyper of the pedal, which is called the "Beratused-AudioGurued-Harladed Overdrive, version -1.0 (yes, the version is a negative number, based on the many mistakes I made along the way. The backdrop is a world map...
  12. SparkyCal

    Back to the Breadboard

    Thank-you guys. Harald, the schematic you used is the one I was referring to. Sorry that I had not identified it. If I understand it correctly, the 1M, in a way, acts like a "bouncer", preventing the 10nF from escaping to ground. Questions: 1. I don't quite under stand the AC thing. Is the...
  13. SparkyCal

    Back to the Breadboard

    Thanks guys. I am just trying g to look back and understand why the circuit works. Pin 5 of the second op amp is fed by a junction point where the two voltage divider resistors meet. Whereas, Pin 3 ( the + In of the first op amp) is fed by the 1M resistor. I am trying to understand what the...
  14. SparkyCal

    Back to the Breadboard

    Thanks guys. AG. What does the 1M resistor specifically do in the circuit I built?
  15. SparkyCal

    Back to the Breadboard

    I can't explain it technically, but I can from a. guitarists' perspective. Anytime you use effects pedals (especially O/D or distortion), you get that noise. Most guitarists, including me, handle this as follows: In a live performance, I use a Boss Noise gate pedal. It goes in line with your...
  16. SparkyCal

    Back to the Breadboard

    Hi guys: Here is a better clip. I used a Fender Squire telecaster guitar. I chose this guitar because it's an entry level guitar. If a distortion pedal can sound good with an entry level guitar, it will sound great with a better guitar. Have a listen. I am quite pleased with it, and there is a...
  17. SparkyCal

    Back to the Breadboard

    Good to know. Thank you
  18. SparkyCal

    Back to the Breadboard

    Thanks guys! I have that tin foil tape used for venting. That may work on the inside of the plastic cases, and it adheres too. I don't know about kits. I see there are a lot of them out there. It seems a little too planned for me. In a way, I;'d rather try and fail and learn some tough lessons...
  19. SparkyCal

    Back to the Breadboard

    cool way not to get jagged holes.
  20. SparkyCal

    Back to the Breadboard

    The highest component is a green film capacitor which is 1/4 inch too tall to fit in the box. I wonder if it is safe to bend it to make it fit
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