Here's a collection of vero (stripboard) and tagboard guitar and bass effect layouts that we have put together covering many classic and popular effects in growing numbers. Many of these have been posted on freestompboxes.org, so check that site out for great discussions on building your own effect pedals. Enjoy the builds and please also visit us on Facebook and Twitter
Please could someone help with what is probably a stupid question. I'm quite new to building stuff. What are the rectangles around the pairs of LDRs and LEDs. Thanks, Pete
Please could someone help with what is probably a stupid question. I'm quite new to building stuff. What are the rectangles around the pairs of LDRs and LEDs. Thanks, Pete
That's just Alex's way of identifying which LED is paired with which LDR as if they were actual resistive opts-isolators (vactrols)....and indicating that the pairs should be taped/heat shrinked together to block any ambient light from any of the other LEDs.
Not 100% sure but I think you should add it from pin 6/7 of the bottom left TL062 (where trimmer is). Add a 1K resistor from pin 6/7 to LED+. LED- to ground.
There may be a problem somewhere. The values should be the correct ones. Have you tried different LDRs/LEDs combinations? Other pots (Linear, Reverse Log..)?
Hi @hobbystubba - can you try the fix I found below - change the 1K resistor from rate1, move it from connecting rate1 to ground to connecting rate1 to depth1. I had the same issues with the pots not functioning throughout the sweep until I made this change
Hi guys, great stuff as usual - however I noticed some odd behaviour on mine which I tracked to what I believe is an error. 1K resistor from rate1 goes to ground on this layout rather than to depth1 as on original easyvibe circuit. My build was exhibiting asymmetrical LFO behaviour, odd behaviour of ramp switch and also my rate and depth controls were only kicking in halfway through the pot. I tracked it to this connection when comparing schematics and this fix sorted it out?
I can confirm that the 1k resistor does indeed need to connect Rate1 and Depth1 (and does not go to ground). I have a schematic that I created (combining the John Hollis and Piotr Zapart schems I found on diystompboxes), and a clumsy vero layout for four TL062s, if anyone still wants to see them. The Zapart schematic shows the 1k going to ground, which I think is the source of the discrepancy.
I built it. It is verified. Not quite completely tick free, but not bad.
ReplyDeleteWow! That was quick!
DeleteStill ticking?
You could try to increase the 10uF cap on pin 8 of the LFO IC to see if it makes a difference.
is the LFO mod connected with some discussion I recall on skewing the wave symmetry?
ReplyDeletePlease could someone help with what is probably a stupid question. I'm quite new to building stuff. What are the rectangles around the pairs of LDRs and LEDs. Thanks, Pete
ReplyDeletePlease could someone help with what is probably a stupid question. I'm quite new to building stuff. What are the rectangles around the pairs of LDRs and LEDs. Thanks, Pete
ReplyDeleteThat's just Alex's way of identifying which LED is paired with which LDR as if they were actual resistive opts-isolators (vactrols)....and indicating that the pairs should be taped/heat shrinked together to block any ambient light from any of the other LEDs.
Deleteis there a way to add an led that will indicate the effect rate ? during bypass would be handy
ReplyDeleteNot 100% sure but I think you should add it from pin 6/7 of the bottom left TL062 (where trimmer is). Add a 1K resistor from pin 6/7 to LED+. LED- to ground.
Deletejust tried with jumpers and works perfectly, hopefully doesnt change the sound.
Deletebuilt it this afternoon, sounds so good
Glad it worked.
DeleteI think It won't change the sound.
the depth and rate pots only seem to work between sorta 7-10 nothing much below that. would swapping some values somewhere help??
DeleteI haven't built it but that doesn't sound right.
DeleteWas it doing the same even before you added the Rate LED?
Yeah i havent added the led yet. it was doing this before
DeleteThere may be a problem somewhere.
DeleteThe values should be the correct ones.
Have you tried different LDRs/LEDs combinations?
Other pots (Linear, Reverse Log..)?
not yet, good idea, thanks alex!
Deleteupdate re: rate led.
attaching to pin 6 of the ic does give the led the pulse but prevents all the other internal led from flashing.
i jumpered from the positive side of d4 without an change in sound
Hi @hobbystubba - can you try the fix I found below - change the 1K resistor from rate1, move it from connecting rate1 to ground to connecting rate1 to depth1. I had the same issues with the pots not functioning throughout the sweep until I made this change
DeleteAnyone know how to add a clean blend/mix knob to this? Interested to see what the results would be...
ReplyDeleteThis comment has been removed by the author.
ReplyDeletethe pedal Decreases volumen??
ReplyDeleteVideo?? problems the layout??
ReplyDeletehttps://www.youtube.com/watch?v=WDweFRjlTcA&t=2s Really good!! thanks
ReplyDeleteHi guys, great stuff as usual - however I noticed some odd behaviour on mine which I tracked to what I believe is an error. 1K resistor from rate1 goes to ground on this layout rather than to depth1 as on original easyvibe circuit. My build was exhibiting asymmetrical LFO behaviour, odd behaviour of ramp switch and also my rate and depth controls were only kicking in halfway through the pot. I tracked it to this connection when comparing schematics and this fix sorted it out?
ReplyDeleteIs there any schematic with the Hammer/Zapart mods?
ReplyDeleteThanks!
Some one tried to build a "brake" with a momentary switch? Is that possible?
ReplyDeleteI can confirm that the 1k resistor does indeed need to connect Rate1 and Depth1 (and does not go to ground). I have a schematic that I created (combining the John Hollis and Piotr Zapart schems I found on diystompboxes), and a clumsy vero layout for four TL062s, if anyone still wants to see them. The Zapart schematic shows the 1k going to ground, which I think is the source of the discrepancy.
ReplyDelete