To record the midi controller data you can also use seq, a basic midi-data recorder and playback thing.
Your dutch is great, snoezel ruimte, good luck

And since you are talking about the triggers comming out of an Arduino, the switches, you can use the debounce inside the arduino sketch, this is a different look at the solution.

i managed to get midirealtimein working with midiclock messages comming
from my ensonique Halo or a moog slim phatty.
Workout is midirealtimein select 248 bang count 6 or 12 bangs and sync
to that counter count, WorkS great.
Dian from the Netherlands

Ps i work with pure data on a Rpi wheezy Debian

Hello, i am thinkening in the same direction, midi in to data out, do you still need help,
The help i got was the idea that i can get everything i and can convert it to everything
out, that's great
i work with midi audio in and convert it to midi out, to speakjets, audio out
Dianderocker