PORTABELLABZ

CV/gate adapters for Buchla instruments


A plug and play adapter card is available for the 208 and Music Easel


These adapters ease interfacing of Buchla gear with non-Buchla equipment, so far are tested on the 208p only, they should work as well with other Buchla modules.
Each small board (max 25x32mm) can be soldered directly to a Cliff minijack socket and installed to a boat or panel or mounted with a screw (3.2mm mounting hole).


The boards come unpopulated without parts. Please contact me to order pre-built ones.


Buchla pulse generator

Turns non-Buchla gate signals (+5V to +15V) into the typical Bucha pulse (+10V pulse followed by a +5V gate) required for proper sustained/transient envelope behaviour.
It is based on the Buchla pulse generator circuit used by Dave Brown for the 218r rev2 pulse modification.

BOM and build notes

Buchla pulse generator


CV 1 to 1.2V/oct

Scales 1V/oct CV to 1.2V/oct and features a switchable offset to turn bipolar -5V/+5V CV into positive 0V/+12V.

BOM and build notes

CV 1 to 1.2V/oct


CV 1.2 to 1V/oct

Scales 1.2V/oct CV to 1V/oct.

BOM and build notes

CV 1.2 to 1V/oct - shipped untracked


Bundles

Please contact me to order other bundles.

Buchla pulse generator + CV 1 to 1.2V/oct - shipped untracked

Buchla pulse generator + CV 1 to 1.2V/oct + CV 1.2 to 1V/oct - shipped untracked