Yasmin Electro-Mechanical Rhythm Sequencer

2017

YEMRS

The Yasmin Electro-Machanical Rhythm Sequencer is a 1-10 step sequencer built into a defunct Otari MX55 reel-to-reel tape machine. The electronics are based on a very simple circuit that I first saw above the sales counter at Al Lasher's Electronics in Berkeley. A 555 timer controls the tempo. each pulse of the sequence can be sent to one of four original tape machine solenoids: motor brakes, tape lifter, and pinch roller. Contact Microphones in key positions amplify the sounds of the solenoids and mechanisms and are mixed through a 8 channel mixer built into the chassis. The output can be routed through external effects for additional processing.

 

YEMRS began as a machine intended to allow a friend to play intuitively with rhythms. As it developed working on the project also became a way for me to work quietly and stay out of my students' way without getting so involved in my own work that I was unavailable to answer their questions and assist when they needed help. Once it was finished I didn't fully realize how much fun YEMRS could be until I watched Daniel Yasmin, percussionist extraordinaire, have a ball with it.

 

 

YEMRS drum solo

 

YEMRS demo - with external delay added

 

YEMRS "gam jam" with Ben Carpernter and Daniel Yasmin: improvising with the newly created YEMRS and other amplified metal instruments.

 

 

YEMRS at the Exploratorium, San Francisco
After Dark: Sound - June 1, 2017

YEMRS at the Exploratorium

YEMRS at the Exploratorium

YEMRS at the Exploratorium

YEMRS at the Exploratorium

YEMRS at the Exploratorium

 

 

YEMRS at 180 Studios, Santa Rosa
Open House - April 6, 2017

YEMRS at 180 Studios

YEMRS at 180 Studios

YEMRS at 180 Studios

 

Process Pictures

original tape machine

original tape machine

sequencer circuit

sequencer circuit

sequencer circuit

sequencer circuit

sequencer circuit

sequencer circuit