Buchla Rhythms - Buchla Music Easel

video upload by Roland Klinkenberg

"Mail me at rklinkenberg(at)gmail(dot)com for more info on the card"



"Aaux card for the Buchla 208 / Music easel.

It's a 16 step envelope trigger module which offers drum computer like step input for two different Envelope outputs. Here a brief description:

- 16 three way switches, up selects output 1, down selects output 2

- Output is a simple envelope with only decay with a potentiometer and a CV input

- Length can be set to 16 steps or 8 steps, in which case it's basically a dual 8 step envelope trigger

- Sync input for syncing the Buchla 208 pulser to an external sync source

All in all a very straight forward card to use, but still a very complex card to build consisting of a 4 layer PCB behind de frontpanel, a 2 layer main pcb and a backpanel, sandwiched together. The 4 layer pcb and the 2 layer main pcb are connected via a total of 28 pins divided over 6 connectors."

You can find additional demos in previous posts here.

Arpeggio on the 208 / Buchla Easel Sequencer Aux Expander Card

video upload by Roland Klinkenberg

"Mail me at rklinkenberg(at)gmail(dot)com for more info on the card."

"Card is back in stock and I made some small improvements:

- New PCB layout, easier to assemble.
- Trimmers for the 1,2V/oct adjustment (portamento) are reachable from the side. No need to take of the frontpanel anymore.
- Sequencer can be triggered by the LFO. This was already possible on the old card by moving a jumper. But now it's a switch position on the frontpanel.
- Envelope generator can be triggered by the LFO.
- Sync input Sync the 208's pulser to an external sync source
- Limited Purple edition ;-)

EDIT: everyone who's interested can email me at rklinkenberg(at)gmail(dot)com stating Buchla Aux Card in the description.
Price for a pre build unit is 400 euro ex vat(if applicable)

Here a description of the functions of the card.This is the new card (4 layer pcb with mostly SMD components)

- 8-step sequencer, clocked by either the pulser or the 208 sequencer’s switches. A switch for selecting 1 alternative step length (for example 7 step)
- LFO, 0.02Hz into audio range, with frequency CV input
- Portamento, on the CO or on both the CO and the MO.
- Envelope generator with ADSR, looped, and LFO modes, plus level control and decay time CV in
- And then some....see manual."

ArpSyncRiff - Buchla 208 / Buchla Easel Sequencer Aux Expander Card

video upload by Roland Klinkenberg

"Mail me at rklinkenberg(at)gmail(dot)com for more info on the card.

Patch: CO & MO pitch modulated by Card sequencer with some portamento. CO amplitude modulated by Card Envelope generator, card Envelope Generator level by 208 sequencer MO Amplitude modulated by 208 Envelope Generator CO Waveshape knob modulated by Card LFO."

16 step pattern - 16 Step Envelope/Trigger aux card for the Buchla 208

video upload by Roland Klinkenberg

"Mail me at rklinkenberg(at)gmail(dot)com for more info on the card"

Prototype phase - Buchla Music Easel 208

video upload by Roland Klinkenberg

"Prototype phase, audio cuts out along the way but you get the idea. Kinda adds to the prototype feel...
Without getting specific, this will turn the 208 into a 2 channel drum machine kinda...but things might change 🙂"

Gamelan Groove - Buchla 208 / Buchla Easel Sequencer Aux Expander Card

video upload by Roland Klinkenberg

"Mail me at rklinkenberg(at)gmail(dot)com for more info on the card."

Rainforest - Buchla 208 / Buchla Easel Sequencer Aux Expander Card

video upload by Roland Klinkenberg

"Mail me at rklinkenberg(at)gmail(dot)com for more info on the card."

Buchla 208 Jam / "new" Buchla Easel Sequencer Aux Card

video upload by Roland Klinkenberg

"Mail me at rklinkenberg(at)gmail(dot)com for more info on the card."

Also see the Klinkenberg label below for more.

Buchla 208, Triple Sequential Voltage Source expander card - Buchla 208 / Buchla Easel Aux Card

video upload by Roland Klinkenberg

"Buchla 208, Triple Sequential Voltage Source expander card, Roland TR-08 and a delay pedal.
Patch description:
Top sequencer - CO pitch
Mid sequencer - MO pitch
Bottom sequencer - MO waveform switch
Random Voltage Source - Decay time
Korg SQ1 serves as a 218 substitute and is used to modulate the basic pitch of both MO and CO."

Arp riff. Buchla 208 / "new" Buchla Easel Sequencer Aux Card

video upload by Roland Klinkenberg

"Intoxicating arp riff done with the 'new' old card.
Both the card sequencer and envelope generator are triggered by the cards LFO.

Mail me at rklinkenberg(at)gmail(dot)com for more info on the card."

More TSVS Tips Tricks

video upload by Todd Barton

Triple Sequential Voltage Source - Buchla 208 / Buchla Easel Aux Card

video upload by Roland Klinkenberg

Buchla rhythm - Buchla 208 / Buchla Easel Aux Card

"My new card, the Triple Sequential Voltage Source. I wanted to make something similar to the Buchla system 100 model 123. It's basically three 8 step sequencers with variable step length and slew.

Step length control can be linked (like on the model 123) and un-linked (each sequencer can have a different length setting).

Price will be 460 euro ext VAT (if applicable). For more info and availability, mail me at rklinkenberg(at) gmail(dot) com stating 'Triple Sequential Voltage Source' in the description."
And a video from Todd Barton:


Triple SVS for Easel video upload by Todd Barton

"This is a very cool card for the Buchla Music Easel by Roland Klinkenberg. More info over on ModWiggler.com
https://modwiggler.com/forum/viewtopi... Enjoy!

My Patreon: https://www.patreon.com/synthtodd"

Mod expander card - Buchla 208 / Buchla Easel Aux Card

video upload by Roland Klinkenberg

"Signal routing switch is modulated by the 208 5 step sequencer via the Mod Expander Card.
What you hear is an alternation between the MOD oscillator, the Complex oscillator & a noise source...
For more info and availability, mail me at rklinkenberg(at) gmail(dot) com stating 'Mod Expander Card' in the description."