electro-music.com -> Microcontrollers and Programmable Logic https://electro-music.com/forum/ AS3394 6-voice Synthesizer for DIY https://electro-music.com/forum/viewtopic.php?p=454941#454941 Please help.

How can I obtain PCBs for this project?
Is the only option to laser print the PDFs and then do an etch?
I do not live in a location where I can do etching.

Aside for trying to reverse engineer the layers into gerbers, is there ...
blakeAlbion Thu, 25 Jan 2024 07:36:44 -0700
Cherry Audio Quadra VST under hardware control https://electro-music.com/forum/viewtopic.php?p=454476#454476 This is a physical hardware controller for the Cherry Audio Quadra VST, every function of the VST is mapped to a button, slider or switch on the hardware controller. I then built the finished controller into a chassis with a 76 note midi/usb keyboard ... craigbarnes Thu, 19 Oct 2023 01:20:24 -0700 A DIY Tribute to Emerson, Lake & Palmer https://electro-music.com/forum/viewtopic.php?p=454466#454466 cool! elektromeister Tue, 17 Oct 2023 08:49:28 -0700 Vittelius 2 - 6 voice poly va synth https://electro-music.com/forum/viewtopic.php?p=453828#453828 I want to share my latest Projekt. 6-voice Polyphonic synth using an AVR microcontroller. Its completely digital and very simple to build.

You can find all information and firmware for diy on the homepage:
https://hbo-synthesizer-workbench.jimdof ...
PropB3 Sun, 21 May 2023 02:29:26 -0700
16 voice analogue Polysynth https://electro-music.com/forum/viewtopic.php?p=453634#453634 And so it's sort of finished, just some software tweeks to make.

https://youtu.be/pIsAd5T5sVk
craigbarnes Tue, 11 Apr 2023 10:47:54 -0700
Roland A110 style MIDI note display https://electro-music.com/forum/viewtopic.php?p=453135#453135 Many thanks, it was hard to actually build a suitable display, i2c was too slow and I had to go with SPI for speed, I couldn't find anything else suitable for mounting into a 1U case, I would have preferred colour screens but I could find anything edg ... craigbarnes Tue, 10 Jan 2023 13:43:42 -0700 6 Voice VCDO programmable polysynth https://electro-music.com/forum/viewtopic.php?p=453125#453125 ahhh 999 memory , it is :)

Thanks for your response, these VCDO chips have modified firmware which fixes some of the glitches, adds a sub osc detune and duplicates some of the more useful waveforms from the sub osc into the main. Not my work, ...
craigbarnes Sun, 08 Jan 2023 06:54:54 -0700
MiniDexed DX7 Rack and Keyboard versions https://electro-music.com/forum/viewtopic.php?p=453116#453116 I originally built a rack version of this project when I first saw it, but since the war started I haven't been able to dedicate much time to it.

However, another DX type project I was playing with had too many issues so I repurposed the internal ...
craigbarnes Fri, 06 Jan 2023 13:44:57 -0700
Synth add on programmer https://electro-music.com/forum/viewtopic.php?p=453112#453112 This project started as I had a monosynth with no more room on the front panel and I wanted to add more options, but these options didn't necessarily need a front panel control so I came up with this Teensy based (but could be arduino) little programm ... craigbarnes Fri, 06 Jan 2023 03:13:52 -0700 Roland MKS-30 OLED display upgrade https://electro-music.com/forum/viewtopic.php?p=453110#453110 I never liked my MKS-30 displays, too difficult to remember what was what without resorting to the quick guides, so I decided to add some intelligence to the displays by replacing the dual 7 segment displays with dual 0.96" OLEDs and a Teensy 4.1 to i ... craigbarnes Fri, 06 Jan 2023 03:07:08 -0700 Hagiwo $9 VCO monosynth https://electro-music.com/forum/viewtopic.php?p=453108#453108 I think technically this is a microprocessor based synth as it uses 2 RP2040's for the oscillators, an Arduinoi NANO for MIDI to CV and a Teensy for programmable options.

This is a take on the Hagiwo $9 VCO based on the Seeed XIAO RP2040 SOC. I bou ...
craigbarnes Fri, 06 Jan 2023 02:28:22 -0700
6 Voice Dual DCO Programmable Polysynth https://electro-music.com/forum/viewtopic.php?p=453107#453107 A small project that came about quite quickly. I was experimenting with the Polykit DCO to see what changes could be made and also how to get dual DCOs per voice. After some input from a colleague it was possible to add FM to the DCOs and alter the de ... craigbarnes Fri, 06 Jan 2023 01:59:30 -0700 Anyone working on an Arduino-based ADSR? https://electro-music.com/forum/viewtopic.php?p=452347#452347
Tom, your link is dead. Could you repost?


Sorry to raise a necro-thread, but for anyone who finds this via google or whatever, I've pput the notes back online at:

https://electricdruid.net/env-gen-some-notes/
Electric Druid Thu, 11 Aug 2022 05:26:47 -0700
Brain chip midi controller https://electro-music.com/forum/viewtopic.php?p=451709#451709 Check :thumright: Grumble Tue, 26 Apr 2022 10:31:19 -0700 Melodic noodle - Teensy 3.x + audio shield https://electro-music.com/forum/viewtopic.php?p=449659#449659 I Like this update. The patch is very interesting. Would love to see the block diagram and some notes assuming of course you used the Teensy Audio Library. Nice work ! State Machine Tue, 29 Jun 2021 12:42:21 -0700 V2164 6-voice polyphonic Synth https://electro-music.com/forum/viewtopic.php?p=449175#449175 I want to share my latest synth design. 6 voice polyphonic synth using the V2164 (SSM2164) chip. Have a look at:

https://hbo-synthesizer-workbench.jimdofree.com/

This synth is based on the early shown AS3394 synth but using the cheaper ...
PropB3 Sun, 02 May 2021 09:03:44 -0700
Generate CV signal - PWM or DAC? https://electro-music.com/forum/viewtopic.php?p=445800#445800 You can use single multiplying dac’s in chain spi mode.
This way you have an easy envelope control as bonus.
Always use (hardware) spi, thats the fastest.
Grumble Wed, 22 Jul 2020 14:23:28 -0700
PIC Wave generation https://electro-music.com/forum/viewtopic.php?p=445799#445799 NCO => PDM? very interesting.

I found this app note but it looks like you found a less complicated way of doing it.

Do you use the technique in any of your published projects Tom?

Sorry, haven't been back around here for while, so I've on ...
Electric Druid Wed, 22 Jul 2020 14:07:21 -0700
Real-time Reverse Effects https://electro-music.com/forum/viewtopic.php?p=444256#444256 I really appreciate the response. I may have relayed my question incorrectly. I'm very new to the digital environments when it comes to design, so I'm still pummeling through the basics of understanding how to implement C into a chip and have it be co ... Andrew C. Thu, 09 Apr 2020 14:35:53 -0700 Raspberry Pi4 Workstation with Music https://electro-music.com/forum/viewtopic.php?p=443989#443989 Thanks Dan, bookmarked for later, looks very interesting. JovianPyx Mon, 23 Mar 2020 07:03:49 -0700