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."

Kraftwerk Home Computer Improvisation - Buchla 208 / Buchla Easel

video upload by Roland Klinkenberg

"It's a 2 bar version of this loop by Kraftwerk which is originally 4 bars long. The envelope level is linked to the sequencer output so the higher notes get more envelope effect.
The card used is the Sequencer Aux Expander card.
Mail me at rklinkenberg(at)gmail(dot)com for more info on the card."

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."

Dual ArpDual osc arp - 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."

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."