How To Make A DIY Guitar Delay Pedal

In this video, I use a PT2399 module to build a simple delay pedal. These boards can be bought very cheaply and make an ideal base circuit for someone starting out with DIY stompboxes. I needed to make a small fet buffer for the input signal, and also do a couple of basic mods to the board.

The enclosure is a Hammond 1590B, but it was a tight fit, and for beginners I'd recommend using a 125B instead, or even a 1590BB.

To decorate the box I used self-priming white spray paint, a water transfer decal, and a rattle can of satin clear coat.

The artwork was scanned from a paper coffee cup.

[Bleats_Sinodai]

"One Transistor"
"Here's the PT2399..."

[Fernando.Canal]

I've just bought this module and was seaching tips about that, but this video became bigger that any expectation I had. Thanks for sharing this experience!

[xpump]

The PT2399 can really make some cool, dirty, analogish echos and running its run-away feedback thru a VCF can make the King Tubby Dub sounds.
I have some high-end solder vacuumed tools but honestly, I find the push-button spring ones shown in this post are just as effective ..and better in some situations.

[cwrigh]

This is a work of art. Thanks for sharing.

[peeemm]

Good project and great video. Have been thinking of building a delay, might do this one now. Nice to see content like this coming from a fellow resident of the Banana Republic of Australia too!

[alelondon]

please don't say it is only one transisor when you rely on a chip full of them, thank you.

[eddododo]

Rob, you really have a great channel… you have a knack for covering some very practical details that don’t get covered typically. I think beginners get a lot from your channel, and you bridge a gap such that intermediates can glean some cool little tips and ideas, and you’re an example of a great methodology for approaching these kinds of projects.

[Damaraja]

Officially bingeing all your vids. So well done, with endless possibilities for future content. The more detail the better. Thanks, man 🤙

[wizrom]

WES components in Sydney will have tips for that iron.

[DeadKoby]

I've built a few with the PT2399 chip also.... it's quite versatile, and sounds pretty good.

[zapp]

Very informative, thanks Rob. Glad I found your channel yesterday.

[lezrekmohamed]

Thanks for the wonderful video, the PDF...
I have made it without the input buffer, it is dark through the front of the amp but excellent in the Fx loop. I will do the buffer when I have the time.

[jeffbeck]

It sounds better than my Behringer delay pedal. ...if you can believe that or not. You also have nice hands, a nice guitar, and a nice tone. I wished you played more guitar to demo the pedal more. ...

[juliofrancatv]

Just build one and I love it! Bought two modules for safety. It´s dirty easy without the buffer and the next step is make the buffer :D (to noise at longer times)

I can´t wait to see the next mods to this pedal (the mixer and the filtering stuff)

[junksmith_wizard]

I love this. You are an amazing builder and video creator

[gay]

It really makes building tape delays seem more hellish

[DustanMoore]

Thanks for the video! I am very interested in DIY'ing some pedals myself and this gave me some motivation.

[Bob-Whiting]

Wow, this one turned out just beautiful. I bet you get hundreds of requests or pre-printed boxes, lol

[TheGigazaga]

Excellent, helpful and inspiring build!

[DavidMsg]

Nice mod Rob! I'm gonna place this together with a small chip amp that powers a speaker on my bench. I run the amp on a 19v laptop power supply, and I'm pretty sure the regulator on this board can go to 35v. I think I just need to replace the 2 decoupling caps that connect to the 7805 input with higher voltage ones? eg a 480uf 25v, and a 100nf 50v mlcc, which I can place at the power inputs of the module (using through holes). Not sure if this is simpler/better than using a 9v1, 1/2w zener diode (the largest I have on hand).