torstai 24. marraskuuta 2011

10. 4x2 Channel plexer


two times four in/out and two in/outputs 5 selectable sequences. (two 4052 and a 4520)

keskiviikko 23. marraskuuta 2011

9. Pulse dealer 6


slave sequencer made of 2 4017 and a 4522 dividing controlling each other etc. also 6 different output channels.

maanantai 21. marraskuuta 2011

3-8 Minikoelse

6. sequencers inside minikoelse:
Minikoelse has many functions it´s a sequencer, drum machine and synth all in one. The structure is modular and it has six different sequencers built in to it.
4017 based 5 to 8 step sequenser with two output channels. No AND-gateing in this one. There are two patchable and AND- gates in minikoelse to “shorten” the output pulses, or to add complexity to the sequence.
4017 based 10step sequencer with inputs for reset and inhibit functions and two output cannels (AND gated with the clock signal) reset and inhibit pins are patchable to modulate the sequence.
4052 based sequencer with cv output. Four steps of cv. It has three control inputs A, B (binary inputs of the 4052) and inhibit.
4052 sequencer selecting 3 toy drum sounds and one pulse output.
4051 sequenser selecting 8 traffic toy sounds.
4040 divider with 12 outputs also internally controlling 4522 divide by n counter with 2 outputs .

This project started from a Wilson Laboratories TX 1200 Tape Analyzer Harri found from fleemarket, whitch was taken apart and used as a case. IMG_4350.CR2

sunnuntai 20. marraskuuta 2011

2. sequencer mixer.

Two 4051 sequencers with two outputs for internal use. Sequencers are used to control filters and panning. Also one pulse output from both sequencers for external use. This machine can be used as a mixer, but with feedback connections it can also do synthesis on its own.

perjantai 4. marraskuuta 2011

Sequencer 1

Laser sekvensseri

mechanical and logic combined. A 4015 shift register controlled by the mechanics and 4522 divider outputs go through the mechanical sequencer.


This sequencer was originally build for an exhibition in Malmö 2005. It is a simple mechanical device made out of a motor and a rotary switch. It connects 12 inputs to 1 output. Speed is determined by motor, so there is no possibility to adjust the speed.

Later development:


At some point (round 2006) Ville did add a patchbay to this sequencer, so any input can be patched to any step with alligator grips. Made it more interestng, but still left it quite limited from musicians point of view (it was originally designed for an exhibition, and it did suit that purpose well). Speed is still determined by motor, and there is no way to adjust it.


Latest development:

Since the original mechanics were complitely  broken already, Harri desided to complitely rebuild it. Original rotary switch is replaced by a slotmachine mechanics, so it will propably be more reliable in the future. also it is not purely mechanical anymore, sequencer itself is CMOS based, and it is only triggered by mechanically.

Now we can sync this sequencer with the other sequencers, but still keep some good old mechanical touch to it.