Building a Clock for Eurorack integration

Niels's icon

Hey I'm trying to build a simple clock so that I can run my max patches as well as eurorack in sync using the expert sleepers ES-9.

So I've made this thing using the phasor object but when I patch it to Pams New Workout its really wonky. What am I not getting?

Max Patch
Copy patch and select New From Clipboard in Max.

Source Audio's icon

What exactly do you need to output as a sync clock ?

Niels's icon

According to the pams new workout manual it should be 24 PPQN gates. So im guessing gate signals that run from 0 to 1.

Anthony Palomba's icon

I think a clock is just a unipolar signal, going from 0 to 1. So a saw wave with a DC offset would work too.

Source Audio's icon

then why not simple triggered click~ ?
Transport seems to be used anyway,
one can run rawticks output through modulo with any interval set
and bang on zero.
why then all this phasor~ rate~ and rest of it complication ?

Different gear might require different puls length or Vpp.
That's why I asked.
It must be stated in docs of that grear.


Niels's icon

I just realized that my reply yesterday was scrambled by my attempt to write it on the phone. Sorry about that. cleaned it up now.

So I was under the impression that clocks were usually made with phasor~ objects to keep everything at audio rate and then clock division with rate~. And that this is sort of the max/msp way of doing things but looks like I'm wrong.

Using the rawtick/modulo works. Thank you!

Just in case anyone else is finding this thread later. One of the reasons I got some drift was that on an M1 mac my I/O Vector size was too high. Setting it to anything below 128 does the trick and actually decreases CPU load.