Showing posts with label Deftaudio. Show all posts
Showing posts with label Deftaudio. Show all posts

Monday, November 20, 2023

Luma-1 vs LM-1 sound comparison

video upload by DeftAudio

"Joe Britt talks about Luma-1 design and plays patterns on both.
If you need true line out, get sound files here:"

Tuesday, November 14, 2023

Luma-1 plays LM-1 patterns that you always wanted to hear

video upload by DeftAudio

Monday, November 06, 2023

Luma-1 - playing lost LM1 patterns

video upload by DeftAudio

"Playing LM1 patterns on Luma-1 live, no post processing. Yamaha DMP11 used as the FX for delay and Gated Verb.

Luma-1 is an authentic recreation of the iconic LM-1, originally designed by Roger Linn in 1979 and now brought back by Joe Britt. Fully recreating the original design of the LM-1, it utilizes the same audio path (with vintage DACs and filters), runs the unmodified LM-1 software, and adds a secondary modern processor for adding highly desirable features like loadable sounds, USB connectivity, MIDI and more."

Sunday, October 29, 2023

Luma-1 drum machine overview and demo

video upload by DeftAudio

"Luma-1 is an authentic recreation of the iconic LM-1, originally designed by Roger Linn in 1979 and now brought back by Joe Britt. Fully recreating the original design of the LM-1, it utilizes the same audio path (with vintage DACs and filters), runs the unmodified LM-1 software, and adds a secondary modern processor for adding highly desirable features like loadable sounds, USB connectivity, MIDI and more."

See this post for additional details.

Friday, September 01, 2023

Meet the Luma-1 - Joe Britt's Enhanced LM-1 Drum Machine In Collaboration with Roger Linn

Joe Britt LM1+ demo video upload by Roger Linn

This one is in via Soviet Space Child.

Above is a prototype Luma-1 in an LM-1 case. Below you'll see some pics of the upcoming Luma1 branded case along with some details.

According to @luma1_drum_machine:

"Welcome! We are two US based engineers who are building and selling a few Luma1 Drum Machines with Roger Linn and Joe Britt’s consent."

"While the Luma1 hardware design is in the final stage for preparation before manufacturing, there is much work happening on the software side. Luma1 is running the original LM1 code on the Z80 CPU while the secondary ARM processor delivers new features. Those include custom sound loading, MIDI, synchronization and now added OLED support. More work needs to be done to expand it and bring brand the new functionality, but we’re really happy with the progress."

Click the pics for larger shots. You can find a full write-up on Roger Linn's website here, and additional demos and pics on Instagram here.

Roger Linn: "I've recently met a new friend named Joe Britt, founder and CEO of a tech company here in Silicon Valley called Afero, and designer of some significant tech products over the years.

Lucky for me, Joe also has a personal interest in my old drum machines. A few years ago, a friend of his gave him (!) one of my old LM1 drum machines. He enjoyed playing with it, but he wished it had a few extra features like loading alternate sounds from files, and pitch and pan knobs on the front panel.

So he decided to make his own enhanced LM1. He searched the web and found some incomplete old schematics, filled in the gaps by reverse-engineering the boards, then redesigned and replaced all of the circuit boards to include his enhancements. Note in the photo above that his redesigned boards are about half the size of the original boards, and are purple! Prince would have loved that."

Monday, May 22, 2023

Deftaudio Fidget Spinner Eurorack LFO DIY kit

video upload by DeftAudio

"Here is a simple to build fidget spinner kit for Eurorack to use as an LFO with other modules.

Deftaudio SpinnerLFO is a simple DIY kit based around a fidget spinner and a double bass pickup.

This module is fully passive and requires no external power. It can be used as an oscillator source, where the frequency is based on the rotational speed. To control other CV inputs, you need to amplify the signal coming from it, such as with a preamp built in Behringer 2600. Any other preamp, mixer and a guitar pedal will work too.

Assembly notes:

Assembling the kit is straight forward. You need very minimal soldering skills, just to solder the sockets and two wires together. No special tools required.

Github file repository"

Wednesday, April 19, 2023

Two channel CV Gate Attenuator for 3.3V/5V logic with an arrow indicator or voltmeter

video upload by DeftAudio

"An overview of the CV/Gate attenuator with various options. Available here:"

"Deftaudio Two Channel CV Gate Attenuator for Eurorack
Two channel gain and max voltage passive attenuator with three options available:

Basic version, two channel with 3.3V, 5V limits, precise adjustment and LED control
Indicator version, two channel with 3.3V, 5V limits, precise adjustment with a vintage arrow indicator per channel
Voltmeter version, two channel with 3.3V, 5V limits, precise adjustment with a single digital LED voltmeter

This is simple and efficient board to adjust voltage level when interfacing between Eurorack gear and to the outside world. It's specifically important for Gate levels, which exceed typical voltage level of 3.3V or 5V and go all the way up to 12V. While modular gear typically designed to handle those voltages, other instruments such as sync or arp inputs on vintage synths may not have a protection at all.

This board designed in mind with three modes of operation which are not available in other products:

3.3V logic limit. This mode is protected by a Zener diode and meant for interfacing to 3.3 logic gear, such as microcontrollers, Arduino, Teensy, etc.
5V logic limit. This mode similarly has a Zener diode circuit for 5V logic of the majority synthesizers sync, arpeggiator and other various trigger inputs.
Attenuation. In this mode multi-turn potentiometer sets the attenuation ratio. While two other modes set the max voltage limit, in this mode the output voltage is linearly scaled down to the attenuation ratio set.
Purchasing options:

PCB only: Only PCB board is included, other parts, such as connectors, diodes, resistors and LEDs are sourced by a buyer.
DIY Kit: Comes with all parts including arrow indicators or digital voltmeter per selected option. Soldering is required.
Assembled board: this option is NOT planned at the moment."

Monday, April 17, 2023

Eurorack MIDI Teensy 5x5 Interface Merger breakout

video upload by DeftAudio

"A quick overview of DIY MIDI interface kit for Eurorack based on Teensy 4.0 CPU.
Available here:"

"Here is an Eurorack version of the popular Teensy 4.0 controller with 5x5 MIDI interface on TRS-A/B (selectable) ports as well as audio output.

This board is designed for Teensy4.0 and it's not compatible with other Teensy products. If you're looking for a similar board for Teensy4.1 or Teensy3.2, please, check other products in my store.

The board provides 5 input / 5 output functionality. This can be your 5x5 MIDI interface, merger, splitter, filter or whatever else you can imagine. This obviously requires programming the Arduino framework with Teensy extensions. I include basic firmware so, you can get USB MIDI running out of the box without any need to learn Arduino.

This TRS version is capable of setting a MIDI specification per port for TRS-A or TRS-B by moving jumper settings. This provides the flexibility to interface it with all vendors no matter the specification used.

You also get one Audio output (stereo) from Teensy Lo-Fi MSQ port. By default it's a sine generator programmed onto USB Port 6 and doesn't interfere with other 5x5 MIDI ports. It can be your clock out, trigger out or some advanced synth. Audio programming for Teensy is also straight forward.

All Teensy pins are available on extra pin headers. This allows easy expansion if you're planning to add extra LEDs, buttons, OLED display, in/outs etc... You can do that without soldering.

Package options:

PCB alone: This includes two PCBs(main and daughter) and aluminum front panel
Complete Electronics kit: Includes PCBs, front panel and all electronic (but Teensy4.0) - TRS connectors, optocouplers, headers, resistors, diodes. Check BOM list by the link.
Teensy microcontroller is not included with any purchase, you can buy it directly from the manufacturer:

There are several options for providing a power:

From Teensy USB port
To be used with Eurorack 16pin power supply and sourcing 5V from eurorack (JP1 1-2)
To be used with Eurorack 10pin power supply, sourcing 12V from eurorack and doing onboard 5V conversion (JP1 2-3)
Board size and an enclosure choice: Eurorack size: 6HP, PCB Size: 10.8x5.4cm"

Thursday, November 24, 2022

Eurorack USB power adapter and Compute faceplate for Intel and Android sticks

video upload by DeftAudio

"DIY Kit and PCB to provide USB power from the Eurorack power as well as compute module mounting. Available on Tindie:"

Monday, April 11, 2022

Deftaudio midi merger [DIY & github] quick review/demo

video upload by Meska

"More a realy quick review, than a demo, but you don't need it for simple function like that.

Many other configuration :
Github :

Thank you for watching.
My name is Meska of the statik collective . I've been making mostly "dark and expérimental" music for more than ten years now, i'v learn so much online, now it's time for me to share my knoledge, my exploration and this channel is a place to talk about the tools, sound design and techniques to make music with.
i'm tattooist at day jobs and you can found my work here :

You can stream my albums and EPs at

If you'd like to support the channel​ consider buying music from bandcamp ;)"

"This MIDI Merger / Splitter is the special 2 input 5 output thru box which I designed from scratch while not being happy with other options.

It has two MIDI input ports which are merged together by a microcontroller and then split to five MIDI outputs. Programmed microcontroller is included with a PCB or Kit purchase.

It has optimized schematics for 5V and 3.3V MIDI sender devices, optimized circuitry for optocoupler to minimize false triggering and improve sensitivity. Finally it uses hex inverter with a Schmitt trigger for driving a stronger output signal. This makes it very reliable device. This is an active circuit, so it does require an external power. That’s the way it should be according to the MIDI specs.

There are two options for external power:

To be used with a standard wall adapter 6-12V and 5.5mm*2.1mm connector. In this case a Kit comes with corresponding socket and 7805 power regulator
To be powered from USB port. In this case a Kit includes USB->5.5mm*2.5mm cable, corresponding power socket (so you wont plug wall adapter) and doesn't include 7805. Instead of that you'll solder a jumper Pin 1 and Pin 3. Leave Pin 2 not connected. Please make sure, you use USB port or adapter with 5V output and verify it prior to connecting to the board. There are some QuickCharge USB chargers which can bump a voltage. Please, avoid using them.

Board size and an enclosure choice: Size: 5x17cm"

Thursday, September 23, 2021

DeftAudio Raspberry Pi 4 Eurorack module with audio, MIDI and power integration.

video upload by DeftAudio

"This is a DIY kit for assembling RPi into eurorack modular system with 5" touchscreen LCD, Audio, MIDI and 16-pin power interfaces.

More details:"

Raspberry Pi Eurorack hardware assembly guide

video upload by DeftAudio

"This guide covers the assembly process of Raspberry Pi with 5" touchscreen into Eurorack with power, audio and MIDI I/O."

Wednesday, May 05, 2021

Brad Fiedel (Terminator 2) Fairlight Restoration announced

video by DeftAudio

"For a very special time I'm announcing Fairlight Series III restoration that was owned by Brad Fiedel and used for scoring Terminator 2 Judgment Day. Importantly there are two systems used which were synced together to produce the original soundtrack. Watch till the end you'll find the easter egg."

Tuesday, September 10, 2019

Deftaudio MacroPot Programable MIDI Controller

New pic of the Deftaudio MacroPot Programable MIDI Controller. See this post for a demo and details.

Wednesday, September 04, 2019

Deftaudio MacroPot Programable MIDI Controller

Published on Sep 4, 2019 DeftAudio

1. Deftaudio MacroPot Introduction and explanation
2. Deftaudio MacroPot operation in Synclavier mode
3. Deftaudio MacroPot quick play [with Sequential Prophet X]
4. Deftaudio MacroPot Assembly Guide

"Deftaudio MacroPot is a single knob deeply programable MIDI controller with extended interface capabilities based around Teensy HW and Arduino programming model. It’s designed to be the most compact Teensy3.2 MIDI implementation in a very dense packaging inside a rugged enclosure. You don’t need to be experienced in Arduino programming, it comes with full featured firmware. However for experienced users can leverage an Open Source firmware available for your own modifications.

Hardware features:
- Rotary dual color (with brightness control) encoder with a push button
- OLED display for a visual feedback and preset information
- Up/Down buttons for a preset management
- 1 x MIDI Input (3.5mm TRS MIDI A or B)
- 3 x MIDI Output (3.5mm TRS MIDI A or B)
- USB MIDI Class compliant with 4 x MIDI devices under OS (1 physical port)
- 1 x Audio/CV/trigger/sync output (via PWM or DAC)
- Programmable activity LED
- Standalone operation from a power bank or power supply.

Software features:
- MacroPot is based around the idea of controlling multiple parameters at a time and quick switching between presets (macro). Within a current macro it’s possible to assign up to 5 simultaneous active controllers for transmit as well as a push button behavior. This allows to create layers or splits in values, assign controllers to different events, messages and MIDI ports, implement curves. MacroPot is also a 1x3 MIDI interface device with merging capability, which enables it at any place in the setup — as a USB controller for any class compliant device or pass through HW MIDI input for your gear.


Available at: Tindie

Update: pic of the new Deftaudio MacroPot Programable MIDI Controller:


Patch n Tweak
Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

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