Hi, everybody!
I would like to know if there would be a shema from “Can drum machine”.
On the LMNC website I couldn’t find anything.
I like the project and I also wonder if we can’t hit the cans with the 6 outputs of the “BIG BUTTON”. What kind of signal is there at the output ?
Thanks for your answers
Enoha
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It’s all standard bits, with tons of articles out there describing how to get things working. Googling for “control solenoid with arduino” and “amplify piezo microphone” brought up roughly 4 million hits…
I suggest doing some reading, and then building one drum unit using components you can source locally. Once you have that working, you can scale it in all possible directions.
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There’s also the distortion circuitry and I have no idea what was used. But here’s a possibility.
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Yes, surely I’ll see that!
in the xa20 is that a distortion control for each can or a general distortion?
Yes indeed I found a lot of stuff!
The problem I have is with the inputs and outputs of the machine. I don’t understand how it’s done and how to control the cans separately with only one input.
Oh wait, there is a schematic of sorts
I don’t think there is only one input, that’s not clear from the video but my guess is there are 16 wires for separate trigger inputs, maybe in a single cable. Or it could be done with an Arduino MIDI shield built in.
That’s an LFO, though. Not sure where that fits into the drum machine…
(the original is the second design on this page
The video shows an arduino, a bunch of TO220 power transistors, and diodes, so arduino + random solenoid tutorial + the arduino midi library, and off you go.
Yeah, that’s a bit puzzling. It does have antiparallel diodes not present in the original, similar to ones in the distortion circuit linked above.
Okay, well, I also need to know about MIDI…
I confess that I’m a beginner and I don’t understand much about MIDI 
.
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Wise people say that if ever MIDI is universally understood and implemented perfectly in all devices, it will instantly vanish and be replaced by something even more baffling.
There are some who say this has already happened.
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I get that reference.
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I wanted to go on and explain that really MIDI was invented by jealous computer software people who didn’t get invited to the same parties that synth players were, and wanted to either make software engineering sound cool, or make synth players suffer by forcing them to talk like computer geeks.
But then I thought Douglas Adams’ literary estate might send me a polite but firm letter concerning copyright.
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Do you need to understand midi? There are really nice arduino libraries that handle most of the hard stuff. Feel free to learn the protocol, its interesting.
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the Hitchhiker’s series is literally my favorite books ever.
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glares in discworld
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Yes, I was going to say my favourite MIDI (Mouse Implemented Demon Invocation) protocol is Cheese On, Cheese Off, though on second thoughts the unlucky channel 7+1 should on no account be used (the Rincewind Incident notwithstanding.)
And we get a lot fewer Rat King problems with the new mouse-based interfaces.
With fond memories of the Usenet newsgroup alt.fan.pratchett, on which yes, really, Terry Pratchett did quite frequently post.
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Maybe something like this could work: https://www.tindie.com/products/hotchk155/midi-switcher-set-your-midi-free/
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polyend perc: cheap version! love this, i think i need to order one now
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Yes, of course it would be simpler, but I’d like to do everything myself to progress.
In fact I have another problem is that on my drum machine I don’t have a MIDI output but just a MIDI input.
That’s why I would have liked to use the “BIG BUTTON” sequencer and not a drum machine.