The WeaseLoti / WeaselStation

#1

This is a project I started about 3 months ago. I've had a Buchla Music Easel for nearly a year, and wanted a way to have a looper that would be in sync with the Easel's internal rhythms. I was originally planning to use a laptop and make a midi to clock box with an Arduino, but then I discovered Axoloti!
The Easel has a program card for storing patches. It uses an edge connector that accesses the voltages and pulses in and out for the synth. I decided to piggyback an Axoloti on to it so that I could have control between the Easel and the Axo in both directions.
A slight difficulty is that the Easel voltages are 0-10v and the Axo is 0-3.3v. So I used perf board to make some voltage dividers to go from Easel to Axo, and to mount an opamp and Synovatron GtPulse boards to go the other way. I also scabbed on a +/- 12v power supply that powers the opamp, the GtPulses and the Axo.
I'm attaching the patch I'm currently using, although I will probably develop some other patches to use with the board. It uses rbrt's 4 track looper slightly modified, some rhythm outs (including Euclideans), two effects, and button feedback interfaces for the Launch Control XL.
Thanks to the community for being such a great resource. I'm open to questions.
Karl

IMG_4471.jpg600x523 222 KB

Updated the .axp file 11/23/16

Weasel Station 7.axp (127.2 KB)

#2

Looks great. Got any video so we can see it in action?

#3

What +-12v power supply did you use?

#4

Great work! I have no idea what you just said but it sounds awfully clever. :slight_smile:

#5

This one:
http://www.futurlec.com/Mini_Power_Dual_12V.shtml

#6

ok! I finally made a video!

#7

Very nice
did you get the (midi) clock sync to work with the @rbrt looper?

#8

I decided to use the Axoloti to generate the master clock. Much easier! I put some additional logic in front of @rbrt 's loop drive multi so that it will reset with the phasor, but only when there is a 1/16th note clock tick. I send the master clock to a midi clock out to sync other things with the Axoloti. Take a look at the .axp file, I just updated it.

#9

thx for sharing the patch, looks good, really clean patching. seems you've taken all advices on saving resources seriously :wink:

I think if you would place the quantization phasor above the plaback logic subptachtes you could still save some bytes in sram (upwards red connections are expensive).
Also the playback logic subpatches are not really good considering execution order, again upwards red connections.

I opened a thread for patching with the looper blocks with a suggestion on tempo synching. Maybe interesting for you too?

#10

I will definitely look at your thread. I' also going to try @rbrt's v2 blocks and see what happens.

#11

Wauw is about to build a 208 and this is defo a WAUW :smiley: do u have any schematic or something over how u didt it?!

#12

Sure, my schematics are just sketches. But I can post them here if you like.