Search found 1057 matches

by Grumble
Tue Jan 19, 2021 6:07 pm
Forum: Music Tech DIY
Topic: resetting this 555 AD envelope generator
Replies: 6
Views: 207

Re: resetting this 555 AD envelope generator

RESET The Reset terminal is designed to have essentially the same trip voltage as the standard bipolar 555/556, i.e., 0.6V to 0.7V. At all supply voltages it represents an extremely high input impedance. The mode of operation of the Reset function is, however, much improved over the standard bipolar...
by Grumble
Tue Jan 19, 2021 5:27 pm
Forum: Music Tech DIY
Topic: 4 Channel Quadrature LFO
Replies: 15
Views: 521

Re: 4 Channel Quadrature LFO



be sure to allow subtitles
by Grumble
Tue Jan 19, 2021 4:23 pm
Forum: Music Tech DIY
Topic: 4 Channel Quadrature LFO
Replies: 15
Views: 521

Re: 4 Channel Quadrature LFO

As for the hardware, I still have to add one connector (a gate/trigger input, the center connector) and some additional programming is required, but this is the way I use my modules in my synth.
I'm not commercially working on modules, just for fun...
by Grumble
Mon Jan 18, 2021 5:03 pm
Forum: Music Tech DIY
Topic: 4 Channel Quadrature LFO
Replies: 15
Views: 521

Re: Sneak preview, new module progress

quadrofront.jpg
quadroside.jpg
Tadaaaa :mrgreen:
by Grumble
Sun Jan 17, 2021 6:02 pm
Forum: Music Tech DIY
Topic: 4 Channel Quadrature LFO
Replies: 15
Views: 521

Re: Sneak preview, new module progress

Several reasons: first it’s reel to reel, second it’s small and last but not least: I got it for free... But any quad dac will do. What I am building here is a quadrature LFO, four outputs all 90 degrees shifted and the idea is that you can choose 4 different wave forms for each output. I am playing...
by Grumble
Sun Jan 17, 2021 5:25 pm
Forum: Music Tech DIY
Topic: 4 Channel Quadrature LFO
Replies: 15
Views: 521

Re: Sneak preview, new module progress

SCH-quadrature.pdf
(156.35 KiB) Downloaded 48 times
This is the schematic, I’m working on the software.
Soon a short demo.
by Grumble
Sun Jan 17, 2021 5:01 pm
Forum: Music Tech DIY
Topic: 4 Channel Quadrature LFO
Replies: 15
Views: 521

Re: Sneak preview, new module progress

It´s the visual representation of two of the four outputs of a module I´m designing.
More later...
by Grumble
Sat Jan 16, 2021 6:21 am
Forum: Music Tech DIY
Topic: 4 Channel Quadrature LFO
Replies: 15
Views: 521

4 Channel Quadrature LFO

by Grumble
Mon Jan 11, 2021 3:37 pm
Forum: Music Tech DIY
Topic: The 2021 Show Us Your DIY Builds Thread!
Replies: 55
Views: 2578

Re: The 2021 Show Us Your DIY Builds Thread!

analogmonster wrote:
Sun Jan 10, 2021 4:12 am
Grumble wrote:
Fri Jan 08, 2021 7:34 am
Sure: viewtopic.php?f=17&t=240630

But the latest mods are not added, will do that later this weekend.
Ok, cool, please let me / us know ;)
DONE!
by Grumble
Mon Jan 11, 2021 10:10 am
Forum: Eurorack Modules
Topic: Your unusual approach to modular!
Replies: 48
Views: 2193

Re: Your unusual approach to modular!

What I forgot to mention was my unusual approach to modular: I usually design the modules myself and they almost all contain an Arduino, being a nano or stm32 Blue pill.
Nowadays my panels are 3d printed.
by Grumble
Mon Jan 11, 2021 2:13 am
Forum: 5U Format Modules
Topic: My oscillators are bullies
Replies: 32
Views: 1183

Re: My oscillators are bullies

Thalassa wrote:
Mon Oct 19, 2020 2:53 pm
Image
That first peak can also be caused by moist (speculating...) as we all know that moisture conducts electricity and when your synth warms up, the moist evaporates (magically disappears)....
by Grumble
Mon Jan 11, 2021 2:04 am
Forum: Eurorack Modules
Topic: Your unusual approach to modular!
Replies: 48
Views: 2193

Re: Your unusual approach to modular!

I have always worked with electronics as my daily job, but in 2015 (age about 60 years) I have built my first (not modular) synthesizer consisting of two sine-, tri-, square-wave generators built around an AD9833 dds chips and controlled by an Arduino Nano, a dual adsr generator built around a dual ...
by Grumble
Sat Jan 09, 2021 2:58 am
Forum: Music Tech DIY
Topic: Building a Voltage Controlled Flanger (question answered)
Replies: 12
Views: 558

Re: Building a Voltage Controlled Flanger (question answered)

Due to limitations of the maximum clock frequency combined with the 1024 step delay, the shortest delay is about 5msec. And since the clock frequency is variable (by knob and cv) there will always at some point(s) in time be cancellation and amplification of the feedback signal if the input signal i...
by Grumble
Fri Jan 08, 2021 7:34 am
Forum: Music Tech DIY
Topic: The 2021 Show Us Your DIY Builds Thread!
Replies: 55
Views: 2578

Re: The 2021 Show Us Your DIY Builds Thread!

Sure: viewtopic.php?f=17&t=240630

But the latest mods are not added, will do that later this weekend.
by Grumble
Thu Jan 07, 2021 2:54 pm
Forum: Music Tech DIY
Topic: Building a Voltage Controlled Flanger (question answered)
Replies: 12
Views: 558

Re: Building a Voltage Controlled Flanger (question answered)

Thanks! Yes I decided to incorporate an attenuverter for feedback and it turned out really nice, especially with sounds that doesn’t change much in frequency like the bassdrum sound used in the clip.
Thanks for the feedback (no pun intended :hihi: ) and a happy new year to you to!
by Grumble
Thu Dec 31, 2020 7:42 am
Forum: General Gear
Topic: Zip drives, USB sticks. Do you trust them?
Replies: 26
Views: 485

Re: Zip drives, USB sticks. Do you trust them?

I have had a zip-drive but nothing but trouble with the d*mn thing.
So many times a disk would go bad....I’d never trust it with important data!
by Grumble
Wed Dec 30, 2020 5:40 pm
Forum: Eurorack Modules
Topic: Stereo Width and Mixing in 12 hp or Less
Replies: 12
Views: 364

Re: Stereo Width and Mixing in 12 hp or Less

I’ve built a six channel mono in, stereo out mixer with two pots per channel, one for volume and one for panning plus a out volume potmeter.
12CCB19D-23FB-41DB-A5C4-5DC147012C4B.jpeg
12CCB19D-23FB-41DB-A5C4-5DC147012C4B.jpeg (82.31 KiB) Viewed 248 times
Eurorack format.
by Grumble
Wed Dec 30, 2020 7:48 am
Forum: Your Tunes Here
Topic: euro minimal breaks
Replies: 18
Views: 335

Re: euro minimal breaks

Who cares it’s out of fashion? I like it a lot! :nana:
by Grumble
Sun Dec 27, 2020 5:21 pm
Forum: Synth Drone
Topic: What is drone?
Replies: 53
Views: 1400

Re: What is drone?

For me a good drone holds a surprise, there is tension and an expectation to the unknown.
So white, pink, blue or what ever color noise could be called a drone, but there is nothing in it to hold my attention, what a good drone can!

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