Hey man, your link to your build is 404.. I wanted to see your build of this. I read all 7 pages over at the diy site, and then built mine.. I ended up putting a pot in series with the 47k resistor so you can send the resistance sky high which cleans up the delays.. affectionately called the 'Juice' knob.. otherwise it's basically Anchovies circuit... I'm thinking about putting a cap across the input as one member said he did to trim down the initial treble which makes the sputter more of a crackle.. I had good results with rolling the tone knob off half way or so. Thanks again for this layout!
That for the heads up. Link updated. :)
It's a very fun circuit. I'm glad to hear that the layouts are being used. Cheers / Fredrik
What value worked best for the potentiometer in series with the 47k resistor?
I used a 500k. Just revisiting this build as I never boxed mine and was finally getting around to it. Momentary stop switch for the loop option between input and output. 22k for shambles, yeah it's fun. I never liked the capacitor mod much.
I built one of these pedals from your layout (Thanks, again!).
This pedal is so much fun, and a signature sound waiting for the right guitar player.
I added the loop switch but only get noticeable feedback at an impractical volume level.
From using a feedback looper I made (Beavis Audio), there seems to be a sweet spot from the feedback pot between no feedback and amp breaking.
Can you suggest an appropriate pot value that I can replace the 3.3m Resistor with. I don't have the electronics knowledge to work out if I need to be adding more resistance or less to get to the point where the feedback occurs.
Thank you, again
The loop should not increase the volume if it's connected between the input and the volume pot lug 3 (insted of directly to the output). So you can try that. Lowering the feedback resistor value will increase the feedback and vice versa.
I hope that helps
Is there a way to get the circuit self-oscillate?
Yes, you can add a resistor between the input and the output for self oscillation/endless repeats. In my completed build I put a 3.3M resistor in series with a SPDT switch between the input and the output on the board (row 3 and 4 on the right side).
Like this: row 3 (input on the board) to the resistor, the other end of the resistor to SPDT pin 2. SPDT pin 3 to veroboard row 4 (output). I hope that makes sense.
You will probably want to experiment with the resistor value. Lower resistor values will increase the feedback.
All the layouts are Verified unless noted.
Overdrive & Distortion