ARDUINO MIDI looper / sequencer

YMNK · February 9, 2021, 2:39pm

Hi everyone.

I’m happy to share with the first version of my MIDI sequencer / looper.
It’s a 4 channels monophonic MIDI sequencer / looper, with up to 128 steps, made with an Arduino Nano. And I use it a lot for building music from scratch.
I did a small video about it, how it works … etc …

I put the design and all the explanations on my website.
http://www.ymnkmusic.com/diy-synths/midi-looper-sequencer/

I’m working on a second version now, with an OLED display, a SD card reader for saving/loading sequences … and without pull-down resistors (something I learned recently, thanks to the nice people from this incredible forum).

sebastian · February 9, 2021, 4:04pm

Awesome!! I already looked at your code some time ago, but it’s great to see a more ready version now! One question: can you sync it to another sequencer? If not, would it be hard to add that?

YMNK · February 9, 2021, 4:26pm

There’s 3 way for syncing an other sequencer

there’s an analog sync output for CV sync clock
there’s also a gate output (it sends a gate a each step, I use it to sync my DIY modular)
there’s MIDI clock signal (start, stop & sync) send trough MIDI

Also it receives MIDI clock signal. So you can build 2 box and connect them together by MIDI and they will be synced.

So, it is MADE to be synced! haha

MacMannes · February 9, 2021, 4:52pm

Very nice! Thanks for sharing this.

I recently found an unused enclosure box which I bought years ago, and I didn’t know what I should make with it, but now I do! . I have all the parts I need to build this, so I will start building it very soon.

I also took a look at your code which looked nice and clean

willow2x · February 9, 2021, 7:20pm

Looks useful and versatile =) subbed and added to the build list.

Thanks for sharing!

nschagen · February 9, 2021, 8:07pm

Looks fantastic. I will probably attempt to make something like this at some point when I have some synth voices working to play with and when I have bought a suitable midi controller that has MIDI out.

BoneMusic · February 10, 2021, 11:24am

woah this is excellent work!

YMNK · February 10, 2021, 2:46pm

Hi everyone and thanks for your feedbacks!

I just updated a new version of the circuit as the last one had some issues (I always invert MIDI pins … shame on me).

If anybody started to build it, my sincere apologies. I just have triple checked my blueprint!

irregularshed · February 10, 2021, 2:53pm

brilliant. I’ll be making my own version soon

sebastian · February 12, 2021, 10:08pm

Started my build today

sebastian · February 19, 2021, 9:17pm

It’s not yet functional, but I feel observed…

auge

YMNK · February 21, 2021, 5:34pm

Haha, this is great! I should test those 8x8 led screen for futur projects!

mEDUSAmONSUL · February 13, 2022, 10:05am

I make a Mod of your work with 1602 lcd, velocity pot, forward, backward and random sequence and
step forward. Thanks for your work

Dud · February 13, 2022, 10:28am

Good work !
Welcome to the forum

YMNK · February 14, 2022, 9:41am

Wow, that’s very cool!
Did you use an Arduino Nano or a Mega?
I’m very curious cause I want to make an upgraded version of mine and I want to know if this LCD would fit with a Nano …

mEDUSAmONSUL · February 14, 2022, 3:13pm

I have used an arduino nano but I think that for memory it is better to use a mega at least if it is possible to record sequences in the future.
I use outputs a4 and a5 for the lcd since they are the sda scl outputs of the lcd i2c. Of course I have put the switches in the digital connections and not in the analog ones as you put and in input-pull up mode to save resistors.
I do not use the potentiometer in the middle below at the moment, it is for a future connection.
I sent you a message from your website if you give me your email I send you the code, thanks again for your work.

YMNK · February 14, 2022, 3:30pm

Cool, thanks for these informations
Yeah, please feel free to reach me at alexis.zbik@gmail.com
I’ll be happy to get your code!

I didn’t get your mail, maybe my contact form is buggy or perhaps it went directly to the spam box I have to find a better contact form system

Dud · February 14, 2022, 4:17pm

It might be cool to share the code also here for those who might be interested. No ?

mEDUSAmONSUL · February 14, 2022, 5:32pm

I clean the code, I make a video this week and I pass the code in the video, OK?

PS I will also put the files to print the box on a 3d printer

mEDUSAmONSUL · March 6, 2022, 3:35pm

Link code arduino and stl in video coments