Deftaudio

1,089 orders since Sep 17, 2019

Mather, CA, United States of America

Ships from United States of America.

View Store

Overall Rating:

Review Breakdown

Average Ratings

Product: (4.77)

Documentation: (4.15)

Shipping: (4.79)

Communication: (4.62)

All Reviews

Teddy | Feb. 13, 2025

RS232 to Midi module

For MIDI RS232 Interface with USB and DIN5 1x1 I/O

I tested it and this interface works perfectly, I use it with the Voyetra 64 sequencer (MS-DOS), I recommend this seller.

Henning | Feb. 7, 2025

I love this module!

For Fidget Spinner Eurorack LFO Oscillator SpinnerLFO

Very very cool electromechanical instrument. It outputs up to about 1V of bipolar CV, depending on how hard you spin. This is enough, even without amplification, for things like vibrato effects, e.g. plug into a VCOs linear or exponential FM for different flavors. Also works as an audio source for low frequency rumble. Shipping was so fast, it felt like it arrived before I ordered. Very easy to assemble, I just wish there were some minimal instructions like where the washers go and which cable goes to which connector. But easy enough to figure out myself. Thanks for making these!

Jeremiah | Oct. 31, 2024

Just what I needed

For Eurorack MIDI TRS Thru 1in -> 4out midithru

This is exactly what I was looking for. I send midi from the Oxi One into it and can mult out from there with A or B to other modules and even other synths.

John | Aug. 14, 2024

Great kit, all parts are there, but overzealous taping

For Teensy 4.1 MIDI Breakout board 8in / 8out USB host

Updating my review, since I finished the build, and it works perfectly! I use PlatformIO as my dev environment, not the Arduino IDE, which didn't work at first. To fix that, all I had to do to was add #include <EEPROM.h> at the top of the .ino file with the other includes and build_flags = -D USB_MIDI to platformio.ini. The PCB is excellent, and the instructions are clear. Labeling and orientation of components on the PCB itself is great. It's so straightforward that instructions aren't really needed if you know what you're doing and you pay attention: For example, the orientation of the 6N138 IC's isn't as obvious from the board, but I could make it out from the photos, and I could find it on the schematic like I should have anyway. Word of advice though: Go easier on the packing tape or use something different. The tape was strong enough to rip all the bubble wrap and the plastic bag containing the MIDI jacks.

Bernhard | Feb. 4, 2024

Most powerful MIDI hub I ever had; great communication

For Teensy 4.1 MIDI Breakout board 8in / 8out USB host

I'm very glad I bought this kit since it obsoletes at least three other pieces of MIDI gear in my setup. Seller Deftaudio was very helpful and quick to respond.

Firmware is available on GitHub and could be tailored to my needs easily. (8x8 MIDI merge - comes out of the box. USB MIDI interface: There's a firmware for that too. Filtering certain MIDI messages, transposing notes ... all possible with a little bit of coding.)

To compile the firmware, I had to select "USB Type: Serial + MIDI" in the "Tools" menu of the Arduino IDE.

If you don't mind a bit of soldering and have maybe a little bit of experience using the Teensy, I can't think of a better device than this.

Mark | Dec. 20, 2023

Missing components in the kit.

For 9V Power Converter Adapter for guitar pedals, MIDI

I purchased this unique power supply kit and the midi 4 to 1 splitter kit. I like the design and thought behind the products these guys sell. The aesthetics are pleasing. Keeping the costs down like this is super awesome! From purchase, until I had the products in hand was 14 days total. I spent the evening putting them both together. Documentation is sparse, but the PCBs are labeled well and the builds are fairly straight forward. Basic electronics knowledge is a pre-requisite, but even a novice with some soldering skills should be able to complete these fairly easily. I will need to find a way to enclose these properly for my application as they will need some level of water resistance.

However, the power supply kit was missing 2 components. A 470ohm resistor, and a 100uF inductor. So, the project is on hold until I can source the inductor. :-(

Response from Deftaudio | Dec. 20, 2023

Very sorry to hear that. It might be much easier to contact us for any missing parts that we can ship you some extra or refund.
Kate.

Raymond | Nov. 28, 2023

Good for beginners

For Eurorack USB-C and USB-B Power Supply

I'm sure it's good for non-beginners as well. This was an easy way for me to get started with Eurorack

Bill | Nov. 13, 2023

Another superb Deft Audio product

For MIDI Thru 1in -> 10out splitter PCB or a Kit

I love this company
Every kit 'just works' and is so clearly described and laid out that no further documentation is necessary.
REALLY inexpensive. good quality components (100 deg + capacitors etc)
Just great. Wish they had UK distribution - they should be selling a lot

Spencer | Oct. 26, 2023

Excellent kit, and great comms

For Teensy 4.1 MIDI Breakout board 8in / 8out USB host

Wonderful kit, which basically has unlimited potential / flexibility. Well designed to be extended with displays etc, and header pins for additional Teensy capabilities (e.g. Ethernet) make this compelling alternative to much more expensive commercial devices which all more or less require a computer hooked up and a "control app".

Great service and pleasant communications from the seller also. Recommended!

Response from Deftaudio | Oct. 26, 2023

Thank you. It's very kind of you.
Kate.

Bill | Sept. 18, 2023

Outstanding Value. Buy it and you will not be disappointed.

For Teensy 4.1 MIDI Breakout board 8in / 8out USB host

The documentation is scant and so you will need to have your wits about you when it comes to flashing the firmware.
But

the kit is beautifully designed and you can just follow your nose when it comes to assembly / soldering.
I made some errors btw..

The developer/seller is helpful and responsive. The price is insanely low.
I also get the impression that someone more knowledgable than me could use this board to create something pretty spectacular midi-wise.. it seems to have the ability to be more than is presented maybe ?

Anyway. For the price is it an outstanding product. I really would recommend. I am surprised it's not more mentioned on forums etc. I will now be looking with interest at any further products from this seller.

Theo | Sept. 2, 2023

Does what it says on the tin. Great experience overall.

For MIDI Thru 1in -> 10out splitter PCB or a Kit

Shipping to New Zealand was quick. Parts were well packed and all there. Within an hour of unpacking it, I'd soldered it all together and was using it. Thanks very much :-)

Paul | Aug. 27, 2023

Parts in the kit were not compatible & did not fit together

For Fidget Spinner Eurorack LFO Oscillator SpinnerLFO

Until this point I've had nothing but great experiences on Tindie so this was a very unusual experience. There are so many useful items and great projects you can support for $10 or less, making it extra upsetting that for $29 I received something so carelessly thrown together.

In the end I had to modify the parts in order to assemble this very basic kit.

I'd say this is at least a cool idea but I'm pretty sure NoodleVolt came up with a module like this first.... so if there's no idea and there's no execution, what are you actually paying for? The privilege of fixing someone else's project?

Response from Deftaudio | Aug. 27, 2023

Very unfortunate to see your bad experience Paul. I've tried to do my best to help you and provided the immediate response to all of your enquires. You should understand when dealing with guitar pickups their tolerance varies from batch to batch. It was our fault that mounting holes are within 0.5mm offset from the pickup, very sorry about that and all new buyers are informed now. At the end of the day you didn't want to make the holes bigger :) and demanded the refund. We are small, we make it for fun and love all our customers. But can't stand amazon-like behavior, very sorry. If you needed the assembled product with no extra effort, you could buy one from NoodleVolt, I'm sure it's great and the cost of $120 is justified.
Kate.

Raymond | Aug. 18, 2023

I love this kit

For Fidget Spinner Eurorack LFO Oscillator SpinnerLFO

I'm just getting into eurorack and as a beginner this was pretty straightforward for me and it's fun to play with (I can actually get oscillations fast enough from this thing to hear it on my studio subwoofer). Only thing I wasn't sure on was the orientation of the double bass pickups during assembly and support was quick and helpful (the answer is that orientation does not matter as the spinner is not symmetrical thus there won't be any phasing effects observed and to experiment with placement if needed)

Caleb | July 25, 2023

Fantastic device - works like a charm

For MIDI MERGER / SPLITTER 2in->5out Thru PCB or Kit

I haven't done too much soldering recently, so that was a b#$%^ to get through, but once done, it works perfectly. I've got midi coming from my computer and from a midi controller going to 5 synths. The signal merging works flawlessly, and now I can have my DAW-less setup and my DAW when I want it without manually re-routing things.

Everything was very well packaged and assembly was easy with the well designed PCB. This was my first Tindie purchase and I absolutely love that there was a midi board with exactly the IO I needed and so much cheaper than going down the commercial device route.

Matthew | May 25, 2023

Love open hardware

For MIDI Thru 1in -> 10out splitter PCB or a Kit

It's both affordable and open hardware, very generous of the creator. Two thoughts I would share:

- The power is center-positive which is a bummer. Basically all guitar pedals and a lot of music gear runs on 9V center-negative, so you can't use your 1 Spot on this. Luckily I happened to have a 9V center-positive so it's not a big deal, but I'm worried I'll forget one of these days. Hope it has protection against reverse polarity!
- One of the ICs I received was bad. Luckily these are super common/cheap ICs; like $1 at Radioshack. I happened to have some lying around and since swapping the ICs I've had no issues.

Despite these issues: 5 stars. A MIDI splitter I can grow into at a fraction of the cost from pre-build solutions. Thank you for sharing your work with the community!

Michael | March 19, 2023

Delightfully over-the-top for what I had in mind...

For Teensy 4.1 MIDI Breakout board 8in / 8out USB host

…but so glad I ordered this kit. I dove head-first into some serious MIDI snooping / message manipulation in what might be a very foolish and naïve attempt to fine-tune the streams to multiple synths. I have no idea if what I want to do is going to work but even if all I end up with is a custom-built 8-way merger, I'll be happy. Assembly was absolutely straight-forward and I love how complete and well placed the components are. I'm looking forward to tinkering with the firmware once I finish verifying everything is working. Thank you!

René | Jan. 15, 2023

Easy to solder and works perfectly

For MIDI MERGER / SPLITTER 2in->5out Thru PCB or Kit

To solder this midi merger you don’t need advanced skills. It is very well explained and I finished it in about one hour.
I made a mistake and pushed one opto coupler in wrong direction into the socket. This destroyed the coupler. Deftaudio helped me finding the mistake and I bought a new coupler at an electronic store for about 1€ (1$). Now everything works fine and I can midi-control my Synths with two sources (sequencer and Keyboard).
Thanks for the help and this great device for a very good price.

Dominic | Dec. 26, 2022

Great circuit, easy build

For MIDI Thru 1in -> 4out splitter PCB or a Kit

Works as it should. Easy build, solid design. Would buy again. Fast shipper. 5-stars. Made wiring my MIDI controlled guitar rig much easier not having to daisy chain everything. I wish the PCB was a bit shorter, would be nice if it fit in a 125B sized enclosure.

Martin Mirolyubov | Sept. 20, 2022

Great product

For Eurorack Faceplate and Synth IO kit Raspberry Pi 4

I received the Raspberry Pi faceplate in good shape. Assembly can get a bit tricky with the suggested method of drilling through the Pi heatsink, but the video instructions are quite clear. This is a diy project so you have to know what you’re getting into. Apart from that, it pretty much works as advertised.

Stuart | Aug. 8, 2022

An excellent product, easy to assemble, and VERY flexible!

For Teensy 3.2 MIDI Breakout board, 3in / 3out, USB

The big pluses: This is a AWESOME bang-for-the buck MIDI interface. MIDI 3 in x MIDI 3 out, plus USB MIDI. Very flexible routing (can be changed via programming OR by using a MIDI router app connected by USB to a computer). If you are an experienced board maker, this build is EASY. I got it done, including flashing the firmware and testing the board, in under an hour.

The down-side/challenges: The documentation is scant, and so you need to look at the board carefully, place the parts accordingly, and you're off to the races. As another reviewer mentioned, be prepared to flash the firmware for the Teensy 3.2 (not included in the kit).

Also, unless I missed something, be prepared to either design and 3D print an enclosure, or make your own box (laser-cut acrylic, perhaps?). I'm designing an enclosure to be printed in PLA.

Response from Deftaudio | Aug. 8, 2022

Hi guys, I know sometimes it's not clear where to find the link to documentation on the product page. You have to click Specs and the follow to Source Code section. All files including firmware, hi res pictures, BOM and design layout for laser cut acrylic panels are placed on Github. Here is a link for your convenience: https://github.com/Deftaudio/Midi-boards/tree/master/MIDITeensy3.2
Kate.

Anthony | July 9, 2022

A happy customer!!!

For Eurorack Faceplate and Synth IO kit Raspberry Pi 4

The communication was great! My first raspberry pi build and the help was awesome. Fast to respond and fast shipping too!

Sean | June 15, 2022

Does exactly what it is supposed to do!

For Teensy 4.0 MIDI Breakout board, 5in / 5out, USB

It is a high-quality, well-designed board that does exactly what it is supposed to do and works well for my needs. The board shipped super fast and was complete.
As for documentation...I didn't need any, and the published schematic was all I needed to get going. I did not need to communicate so I gave a good rating for the benefit of the doubt. Thanks much!

George | June 12, 2022

Great super useful tool, if you can house it.

For MIDI MERGER / SPLITTER 2in->10out Thru PCB or Kit

The build documentation was great, I managed to build the splitter/merger without issue & it works great.

That said, the documentation related to getting a housing made for it left a bit to be desired. Why CorelDraw for the design file? I took the suggestion for getting a top & bottom plate made to sandwich the board with nylon standoffs. Luckily I found someone with a laser cutter able to work with the file. But since the file in the GitHub only provided the corner hole placement, and the only flat image of the board graphics is chopped off at one end getting proper cutouts for LEDs, Switches & having labels engraved proved more difficult. This resulted in just having the entire top be a framed open rectangle. Certainly sufficient for the task but a more widely used design file type with more of the board graphics would have made this less of a slog. Kit & function 10:10, getting an enclosure produced for the kit 4:10

Benjamin | April 30, 2022

Great clock converter

For MIDI Sync box Din Sync Any sync PCB or Kit

Was a little frustrating due to brief documentation. Had my doubts testing. But this thing is driving my KPR-77 at full speed with a MIDI clock. Highly recommended.

Jeffrey | March 13, 2022

Exactly what you'd want of a device of this type.

For Teensy 4.1 MIDI Breakout board 8in / 8out USB host

This board did exactly what I needed it to do. The example firmware was all that was needed for me to write my own and the inclusion of throughholes for the Teensy header makes this a flexible solution for those looking to push the limits of what the Teensy 4.1—and the average musician—can do with MIDI.

Response from Deftaudio | March 13, 2022

Thank you!

Alexander | March 8, 2022

Cost-effective option for MIDI splitting

For MIDI Thru 2input -> 10out splitter PCB or a Kit

Bought this to replace my ailing MOTU MTPIII. I mounted the board to a scrap piece of 1/2" acrylic to give it some weight and keep it from shifting around. I think the board could use some support in the middle. Looking at the traces, there's definitely room to add more mounting holes.
It's easy to build and it's cheap.

Response from Deftaudio | March 9, 2022

Thank you for your review! It's a good suggestion to add a middle hole for the extra mounting. I'll certainly do this on the next batch. Great idea!

Cooper | Feb. 3, 2022

Amazing & Simple Product and Easy to Assemble Kit!

For MIDI Thru 1in -> 4out splitter PCB or a Kit

This is a very simple & affordable project that does exactly what it's supposed to do. I received it in the post relatively quickly and it was packaged up almost too nicely. :P The kit is very easy to put together and could take someone anywhere from 30 minutes to an hour depending on their experience. I did encounter some issues with the BOM (which serves as the documentation), but I was able to figure it out easily. Andrei already got back with me about it and it was a misprint of an older spreadsheet. Only thing I'd recommend changing is something to better describe how the power jumper works right on the silkscreen so there's no guessing about it... and maybe a proper USB-B connector instead of a USB to barrel cable.

Jay | Dec. 8, 2021

Great DIY MIDI utility

For Teensy 4.0 MIDI Breakout board, 5in / 5out, USB

This is a very good and easy to construct MIDI device with many capabilities. I use it as a MIDI interface and I find it to be very useful and reliable for my needs.

Jay | Dec. 8, 2021

Excellent, effective, and easy to construct

For MIDI Thru 2input -> 10out splitter PCB or a Kit

This is an excellent MIDI utility for a great price compared to commercial MIDI splitters. It is a very simple build with clear instructions. One thing to mention if you purchase the 9V power supply version is to make sure solder a jumper at JP1 on the PCB. That was a simple mistake I made, but Deftaudio easy to communicate with and helped me figure out my error.

Mykola | Nov. 22, 2021

Useful, good quality, easy 2 assembl, shipping price offends

For MIDI Thru 1in -> 10out splitter PCB or a Kit

You better start building this very useful item from the end. Read the bottom part of the XLS file and solder resistors first then add bigger components like capacitors, dips, din ports. For resistors soldering use a fabric glove to protect fingers from the burn. Din port needs one-shots soldering, insert it to the end then solder one extreme leg, this will fix din to PCB and free your hand. Move on. The middle leg wants more heat to solder, because of its bigger mass. Solder everything and shortcut jp1 jumper 1-2 pins to always use a voltage regulator if you will use external psu. This will save you IC hex inverters, cs they work till 6v max. Check the voltage on the led socket with the power on, no more than 5+ volts. Power off and then put ICs in DIPs.
Voltage max for the light-emitting diodes like 9v, this moment missing in the manual.

Olivier | Nov. 17, 2021

GREAT!

For MIDI MERGER / SPLITTER 2in->5out Thru PCB or Kit

The kit is great, easy to achieve, works all fine.
Used into my guitar rig to merge Midi Output (giving midi tempo) and Thru of an eventide to the other FX procs.
The only this I'd suggest would be to modify the PSU input with Negative on center and positive outside like most of the guitar pedals of the industry.
THX

Thomas | Nov. 10, 2021

Product PCB / Teensy 3.2 MacroPot

For MacroPot deeply programmable MIDI controller Kit

Hello Andrei Kudryavtsev, Deftaudio,
Your PCB are of very good quality, delivery time from the USA to Germany is very good. Thanks a lot for this.
Many greetings
Thomas Effendy
Musikandmore.net

Thomas | Nov. 10, 2021

Product PCB / Teensy 4.1 MIDI Breakout board 8in / 8out

For Teensy 4.1 MIDI Breakout board 8in / 8out USB host

Hello Deftaudio,
Your products Teensy 4.1 MIDI Breakout board 8in / 8outare of very good quality, complete kit, delivery time from the USA to Germany is very good.
Thanks a lot for this.
Note: I made a front panel for 19 "1U for the MIDI Thru1-10 and the Teensy 4.1 MIDI Breakout board 8in / 8out. Let me know if you are interested.
Thomas Effendy
Musikandmore.net

Thomas | Nov. 10, 2021

Very good Produkt.!

For MIDI Thru 1in -> 10out splitter PCB or a Kit

Hello Deftaudio,
Your products are of very good quality, complete kit, delivery time from the USA to Germany is very good. Thanks a lot for this.
I made a front panel for 19 "1U for the MIDI Thru1-10 and the Midi Merge 8x8. Let me know if you are interested.
Thomas Effendy
Musikanmore.net

Page 1 of 2