I made a thing.

digitalscream

Pretty simple at the moment - it's kind of like a combined MIDI relay switcher and loop controller. Effectively, it controls the bypass state of the delays (which have trails, one of the main reasons I haven't just gone for a normal loop switcher). You can set their bypass state and save it to presets, then step through and recall them as necessary. It's supposed to be MIDI-controlled, but I forgot to order one of the key components for the MIDI input circuit, so that'll have to wait until later today (thank you, Amazon).

This version will go straight on my new pedalboard when it's boxed up.

It actually works astonishingly well, and the code's pretty flexible so I can add relays and other cool stuff for the next version. That "other cool stuff" will, in theory, be controlling the parameters of the delays themselves. That's part of the idea behind using the Joyo pedals - their guts are small enough to fit in a box that's not huge.

Once I've got that, I may go even further do tap tempo, and allow presets to decide whether the two delays are dependent on each other (for an easy way to simulate a dual-tap delay) or completely independent.

It's not rocket science, but it was astonishingly easy. The bit I'm most proud of is figuring out a neat way to run all the switches off a single analogue pin on the Arduino (different resistor values for each switch). Unfortunately, I then discovered that even schoolkids playing with Arduinos have figured that one out.

Ah, well.

dano

Looks awesome.  I built a nice little arduino tap tempo to CV controller a few years ago. If you want the code let me know if can dig it out.  Just uses the hardware interrupt on an external pin with a bit of digital filtering

dindude

I've no idea what I've just read, but really well done anyway!

guitartango

very nice, all you need now is a 3D printer and you will knocking them out to us for £200 a pop (hand built)

EricTheWeary

dindude said:

I've no idea what I've just read, but really well done anyway!

Yep me too. 

Two Joyo Quattros - I'm very tempted by one as the most affordable filtered delay and it's in a tiny pedal. As I haven't plugged in my pedal board for 6 months I'm sure it would be a pointless purchase even for £50.

digitalscream

EricTheWeary said:

dindude said:

I've no idea what I've just read, but really well done anyway!

Yep me too. 

Two Joyo Quattros - I'm very tempted by one as the most affordable filtered delay and it's in a tiny pedal. As I haven't plugged in my pedal board for 6 months I'm sure it would be a pointless purchase even for £50.

They really do sound great. My only worry is that I'm not sure they'll handle the line-level signal coming from the preamp; I may need to keep the output volume low and crank the power amp until I can get a better solution in place.

In other news, the optocouplers are here so I can build the MIDI circuit...the project boxes are also here, and it turns out I need to pay more attention to the details; I got ones that are 2.5cm tall, which is barely enough to fit the Arduino in (much less the Arduino, the relays and the switching board). I intended to get the 6.5cm ones

Sporky

Making a thing is pretty cool.

I should probably have a go at rewriting the code in my Helix looper controller. What's there seems a bit hand-wavy.

paulnb57

dindude said:

I've no idea what I've just read, but really well done anyway!

I wish I understood this sort of thing, but am resigned to being a luddite and being impressed by folk who do......I get what it does, just no idea how...well done Lee!

digitalscream

paulnb57 said:

dindude said:

I've no idea what I've just read, but really well done anyway!

I wish I understood this sort of thing, but am resigned to being a luddite and being impressed by folk who do......I get what it does, just no idea how...well done Lee!

That's the thing - with a little coding knowledge, a pile of bits and absolutely no idea of electronics, I managed to put it together in less than a day. It really is easy to do this sort of thing, I've just never really tried.

Of course, now I have two more problems...

1 - Figure out how to get it all into a box that's actually useful.

2 - My brain's full of ideas and it wants me to automate the whole world.

I see an awful lot of Arduinos in my near future.

Roland

Sounds like we need to build a forum archive of Arduino driven effects

Hootsmon

eh?

cbellanga

In other news, the optocouplers are here so I can build the MIDI circuit...the project boxes are also here, and it turns out I need to pay more attention to the details; I got ones that are 2.5cm tall, which is barely enough to fit the Arduino in (much less the Arduino, the relays and the switching board). I intended to get the 6.5cm ones

You could bypass the whole arduino thing and build your own microprocessor for even small footprint.. I guess all in all they’re less than 10 elements put together

57Deluxe

...why doesn't solder stick anymore...??

Foster

digitalscream said:

paulnb57 said:

dindude said:

I've no idea what I've just read, but really well done anyway!

I wish I understood this sort of thing, but am resigned to being a luddite and being impressed by folk who do......I get what it does, just no idea how...well done Lee!

That's the thing - with a little coding knowledge, a pile of bits and absolutely no idea of electronics, I managed to put it together in less than a day. It really is easy to do this sort of thing, I've just never really tried.

Of course, now I have two more problems...

1 - Figure out how to get it all into a box that's actually useful.

2 - My brain's full of ideas and it wants me to automate the whole world.

I see an awful lot of Arduinos in my near future.

Could you get away with an Arduino Nano? They're amazingly tiny! 

Fez

57Deluxe said:

...why doesn't solder stick anymore...??

No lead in it.

digitalscream

Foster said:

digitalscream said:

paulnb57 said:

dindude said:

I've no idea what I've just read, but really well done anyway!

I wish I understood this sort of thing, but am resigned to being a luddite and being impressed by folk who do......I get what it does, just no idea how...well done Lee!

That's the thing - with a little coding knowledge, a pile of bits and absolutely no idea of electronics, I managed to put it together in less than a day. It really is easy to do this sort of thing, I've just never really tried.

Of course, now I have two more problems...

1 - Figure out how to get it all into a box that's actually useful.

2 - My brain's full of ideas and it wants me to automate the whole world.

I see an awful lot of Arduinos in my near future.

Could you get away with an Arduino Nano? They're amazingly tiny! 

Yep, I probably could - it'd need an external voltage converter though (I'm running the whole thing off a 9V supply from the pedalboard), which is a minor pain.

I'm actually about to box it all up - I've moved most of the electronics off the breadboard onto stripboard, just considering whether I can be bothered putting indicator LEDs on it (they're not really necessary, since the pedals' own indicators do exactly the same thing).

Oh, and I need to add a MIDI out port as well. Should be pretty trivial, in theory.

Foster

I bought a bunch of voltage converters that fit into a breadboard - useful for powering motors and suchlike. I'm sure they're made by elegoo 

digitalscream

Foster said:

I bought a bunch of voltage converters that fit into a breadboard - useful for powering motors and suchlike. I'm sure they're made by elegoo 

Yeah, my Arduino is an Elegoo. Think it was something like £25 for the whole starter kit.

PolarityMan

Board layout needs some work though. Get that thing on a dark stage and you'll have mashed your foot through that circuit board by the second solo. Additionally a tidied layout will free up space for a korg miku