Monday, 30 November 2020

Pre-Brexit Sale

Offer extended to 9th December 2020 !!

Depending on whether the UK gets a Brexit deal with the EU, goods shipped from the UK to the EU may be subject to additional customs duty or taxes after 1st January 2021.

So, I’m having a clear out of old Eurorack projects. These are all PCB and 2mm aluminium panel sets:

100m-ish Series:
100m-ish VCO Driver PCB and 8hp panel (was GBP 22) now GBP 16 (1 set available)
100m-ish Mixer PCB and 18hp panel (was GBP 34) now GBP 25 (1 set available)
100m-ish Ring Mod PCB and 4hp panel (was GBP 20) now GBP 15 (2 sets available)
100m-ish Signal Gate and 8 hp panel (was GBP 23.50) now GBP 16 (7 sets available)
100m-ish Audio Delay PCB and 8hp panel (was GBP 25) now GBP 20 (10 sets available)
100m-ish fixed HPF PCB, 4hp panel, with switches (was GBP 18) now GBP 14 (5 sets available)

Other:
Transient PCB, 8hp panel, PIC chip (was GBP 26) now GBP 20 (2 sets available) SOLD
dAhDShR PCB, 8hp panel, PIC chip (was GBP 26) now GBP 18 (14 sets available)

Also:
Proxima (distance sensor) PCB and 6hp black FR4 panel (was GBP 10) now GBP 8 (1 set available)

See the "100m-ish" and "eurorack" pages for more details for details of the above projects.

Please email (enquiries@fitzgreyve.co.uk) if interested or if any questions on the above items. I will confirm if items are still available and then send you a paypal invoice.


This offer is valid to 9th December 2020 only. Shipping on all sale items is at cost (including UK)

Sunday, 29 November 2020

 Second video of MUWZ, covering  the three gate modes, and SETUP mode:



Monday, 23 November 2020

 MUWZ is released! 


I’ve been working on this on-and-off for a couple of years, but I’m now happy that it’s ready for release.

MUWZ is a Eurorack interpretation of the Triadex MUSE, a 1972 “computer musical synthesizer” that was invented by Marvin Minsky and Edward Fredkin of the Massachusetts Institute of Technology.  

While the original MUSE documentation refers to it as a “computer”, it is actually a collection of counters, shift registers and simple logic circuits.

MUWZ creates original melodies from simple algorithmic processes. There are no pre-programmed sequences or random sources involved.

The original MUSE was not a "synthesizer" in the current sense of the word, as it only played a fixed level square wave.

 MUWZ omits the sound generation and acts as a monophonic sequencer with standard 1 volt per octave CV and GATE outputs, and inputs for external CLOCK and RESET.

With MUWZ, what sound you generate is up to you and your modular synthesizer setup!

MUWZ is capable of creating compositions that include scales, patterns, riffs, call and response, and theme development.

 


 

Finally, would I design it again this way if I started from scratch? “Probably not”. It is what it is!

 

See "Eurorack Modules" pages for more details.Feel free to ask any questions.



Monday, 20 April 2020

Woodwork rather than electronics - 126HP skiff/case:
I wouldn't normally contemplate using a flying bus for power distribution, but it was the quickest to implement.

Monday, 3 February 2020

Upgrades to Transient and dAhDShR modules

Software upgrades are now available for the Fitzgreyve Transient and dAhDShR modules.These expand the standard control range ( of up to 10 seconds ) to add selectable control ranges of up to 100 seconds, 1000 seconds, or 2440 seconds (thats around 42 minutes!)

Also, PCBs are available for the new "Tr-Ex" Transient Expander  module that provides buffered "stage" trigger outputs together with cycle start end end pulses for either the Transient or dAhDShR module. 

See the "eurorack modules" page for details of the both of these enhancements. 

 

Friday, 16 August 2019

PE Minisonic VCF

I've finally got around to assembling a Eurorack  version of the Voltage Controlled Filter (VCF) from the Practical Electroncs magazine "Minisonic 2" Synth. The Minisonic was the start of my synth DIY journey, around 1979. While bits of my original Minisonic circuity are probably still around hiding in other equipment, the VCF "disappeared", so it's good to hear it again after about 35 years!
This is a diode ladder low-pass VCF and it will self oscillate, but only above 2KHz. It's designed to be 24dB/octave rolloff, but due to the circuit design it's less than this in practice.I think it has a relatively soft "bubbly" character.

I've added an internal white noise source, and gone for larger retro knobs.

This is a "one off" nostagia project, I'm not intending to market these.




Demo clip on Soundcloud (internal noise source then sequenced sawtooth wave - this is just the filter, nothing added):





Tuesday, 30 April 2019

100m-ish Audio Delay module


MN3208 (obtained from Banzai Musik) is now added to the list of tested BBD ICs for this module. The 2048 stage device provides sufficient delay to generate a "double tracking" or very short echo effect, but the delay is not long enough for a longer echo. MN3208 is fairly noisy.