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thank you for the tip, this seems really useful, think ill be hunting them down on aliexpress tonight lol

your power jacks are really interesting ive never seen them before, what are they?

These are VTL5C1s, I built it according to this doc https://cdn.shopify.com/s/files/1/0022/3952/9069/files/Cardinal-Trem-V2.pdf?16138734983046189115

Hi all, I recently drew up and built a circuit for the cardinal tremolo by 1776 effects but I’m having some issues. The sound produced sounds extremely distorted and there is no modulation in the sound. I followed the bias tutorial on YouTube before testing and I’m fairly confident my soldering...

thanks for the suggestion, cant wait to give this a go!

Hi all, a question for anyone more technically minded than me (all of you) I want to add a switch to my PedalPCB pendulum pedal, similar to the switch on the Supro harmonic tremolo, which changes between harmonic tremolo and the more standard 'amplitude' tremolo. I've mocked up the below so...

The measured vref was 4.3V and the battery reading was 8.8V so I don’t think the opamp is causing the distortion unless the opamps are out of spec..? I’ve tried the circuit with both TL074 and LM324, both have the same issue but LM324 has a slightly lower noise floor. This is my pedalpcb...

sorry only just seen this response lol, i actually plug it directly into the 230V (UK) mains using a fork and screwdriver and i use a special testing guitar which is basically a toaster with pickups mounted to it ;) i use 9V batteries for testing, the guitar works normally with the amp when...

Thanks for the reply! Yeah all my builds are true bypass, I’ll give this a check thanks for the suggestion!

Video clips here: https://www.dropbox.com/scl/fi/zt6c1s6mz0qxoerpe3yeq/Video-27-09-2025-11-04-29.mov?rlkey=zoo09t4mj1inc4e5ryvv1uxj0&st=z2dk31yd&dl=0 https://www.dropbox.com/scl/fi/prbqy01sycn4uacpari6o/Video-27-09-2025-10-59-58.mov?rlkey=e161lzodummjquqsq8vjh4k0k&st=dea0w72z&dl=0

Hi all, I’m plagued by an issue with some optical tremolos which I can’t seem to resolve, where I am hearing a ‘fizz’ in the tremolo when guitar signal is passed through. In some cases the fizz is only present in the peaks, when the volume is at the highest, but in the sound clip I just recorded...

@rwl I ordered your gerber files for this a few weeks ago and it sounded incredible. Just finished boxing it up. Thank you for sharing the files you used, it’s a really good translation of the circuit and really well laid out! -Tom

this is very cool, thanks for sharing! how are you attaching the board to the footswitch, just with hot glue?

this is really cool! could you share your gerber files and PCBA assembly files for the bypass daughter board?

Here’s the schematic in case you don’t have it

If the led isn’t turning on then it’s either in backwards or it’s not seeing power and connecting to ground. The solder joints on the 4 footswitch pads look a bit sketchy, maybe check them with a multimeter. After that I’d trace the power line to the regulator, and ensure that 3.3V is coming...

Another quick thought, if you don’t have a pair of callipers to measure the hole positions for your enclosure, the JLCPCB website has a gerber viewer. If you click on your order you can click on the rendered image of the PCB and in the new page that opens up there’s a measure tool. I think right...

Thanks for sharing your progress man, this is really cool to see! Glad to hear its working well too! - Tom

so if both circuits are off is there no signal? if theres no signal when both circuits are bypassed it would suggest that there is a break in the connections between the jacks and the footswitch, or that the signal path is being sent to ground somewhere. i think check your solder joints between...

thank you! this is the first time id really looked at filters in more detail, hadnt even realised what the Qs was! thanks for the suggestion thats really helped my understanding! thanks for the suggestion, this is a great idea and saves me a bit of time with the numbers! ill probably use the...