If you are new to this site or the Arduino platform, have a scan over the Getting Started page. I’ve categorised the projects as either “beginner” or “advanced”. I will do more explaining in the beginner projects, especially when a new concept crops up that hasn’t been encountered in any of the previous projects. With the…
✍️Write rieview ✍️Rezension schreiben 🏷️Get Badge! 🏷️Abzeichen holen! ⚙️Edit entry ⚙️Eintrag bearbeiten 📰News 📰Neuigkeiten
I’ve had my eye on Duppa’s rather neat looking I2C LED rings and rotary encoders for some time and finally pushed “go” on getting a couple. I want to use them as the basis for a MIDI controller but this post is just my “getting to know them” post. A follow-up will build on this … Continue reading Duppa I2C MIDI Controller – Part 1
9.3.2025 17:08Duppa I2C MIDI Controller – Part 1In reply to <a href="https://diyelectromusic.com/2025/03/02/pico-touch-board-pcb-design/comment-page-1/#comment-3556">Kevin</a>. <!-- wp:paragraph --> Thank you! Will do! <!-- /wp:paragraph -->
3.3.2025 13:28Comment on Pico Touch Board PCB Design by sinitsinmikeIn reply to <a href="https://diyelectromusic.com/2025/03/02/pico-touch-board-pcb-design/comment-page-1/#comment-3555">sinitsinmike</a>. Yep, link in the accompanying build guide. Do let me know if you give it a go :) Kevin
3.3.2025 13:04Comment on Pico Touch Board PCB Design by Kevin<!-- wp:paragraph --> <p>Hello. Is this PCB on Github?</p> <!-- /wp:paragraph -->
3.3.2025 12:58Comment on Pico Touch Board PCB Design by sinitsinmikeIn reply to <a href="https://diyelectromusic.com/2025/03/02/almost-all-in-one-minidexed-io-options/comment-page-1/#comment-3552">gmeader</a>. Well that is kind of the approach I've taken in my own MiniDexed PCBs (which include MIDI too), but they don't follow the HAT standard. But then I don't really see the point of the HAT standard when not using Raspberry Pi OS as it is all about OS plug-and-play and MiniDexed on circle doesn't have that anyway. (Pirate audio is supported now - that was what prompted me to add ST7789 display support...) Kevin
3.3.2025 08:07Comment on Almost “All in one” MiniDexed IO Options by KevinIn reply to <a href="https://diyelectromusic.com/2025/03/02/pico-touch-board-pcb-build-guide/comment-page-1/#comment-3551">Tom</a>. Most keyboards would use a matrix approach, so I'm not clear how that could be done with something like this. There might be a couple of approaches though. One would be to use several of these. These support 21 keys each, so that could be covered by three of these (an extra GPIO on one of them could be found by using GP1 maybe instead of using it for RX) with a different MIDI starting note and some MIDI merging. I'd probably use a fourth Pico for the MIDI merging so that it stays responsive. Another approach would be to cascade several MPR121 modules to a single microcontroller. Another possibility might be to use those TTP223 based modules I wrote about recently. They output a single IO HIGH/LOW so could probably be scanned either in a matrix format or via a shift register. Those are the kinds of approaches I'd be thinking about (there are articles about most of those tucked away on my blog somewhere). Kevin
3.3.2025 08:05Comment on Pico Touch Board PCB Build Guide by KevinThis is great. What would be useful is a board that integrates a display, buttons and encoder and a DAC with output jack and that is designed as a HAT for Raspberry. Plug and Play... Here's a nice HAT example (with color display), but it lacks the encoder https://shop.pimoroni.com/products/pirate-audio-line-out?variant=31189750546515
2.3.2025 22:01Comment on Almost “All in one” MiniDexed IO Options by gmeader<!-- wp:paragraph --> <p>Kevin, I would like to have a pico touch board that supports 64 touch keys (or just over five octaves) which is very standard for synths keyboards. Could you diagram the circuit design ?</p> <!-- /wp:paragraph --><!-- wp:paragraph --> <p>Thanks, Tom</p> <!-- /wp:paragraph -->
2.3.2025 21:29Comment on Pico Touch Board PCB Build Guide by TomHere are the build notes for my Pico Touch Board PCB. Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! If you are new to microcontrollers and electronics, see the Getting Started pages. Bill of Materials Optional: MIDI Interface: Note: If MIDI … Continue reading Pico Touch Board PCB Build Guide
2.3.2025 20:04Pico Touch Board PCB Build GuideEver since doing my Raspberry Pi Pico MIDI Touch Keyboard I’ve wanted something that would be crocodile clip/DIY friendly, so this is the result. Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! If you are new to microcontrollers and electronics, … Continue reading Pico Touch Board PCB Design
2.3.2025 16:42Pico Touch Board PCB DesignAs I was browsing around I happened to notice a couple of interesting add-on boards that comprise a OLED display, rotary encoder and some buttons. With the addition of a I2S DAC (or just using the existing PWM output) these make a really interesting option for MiniDexed IO. Warning! I strongly recommend using old or … Continue reading Almost “All in one” MiniDexed IO Options
2.3.2025 13:53Almost “All in one” MiniDexed IO OptionsThhanks for the post
1.3.2025 16:51Comment on Arduino Tone One Year On! by Keaton SI’ve grabbed some very cheap TTP223-based touch pad PCBs so this is showing how they can be used as a replacement button in a simple Arduino MIDI controller. Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! These are the key … Continue reading Simple MIDI Touch Button Keyboard
28.2.2025 18:42Simple MIDI Touch Button Keyboard… reposted this!
26.2.2025 10:42Comment on Waveshare RP2040 Matrix MIDI Monitor by ramazz0ttiI’ve done a number of MIDI processing projects, but was always planning to go back and build up some kind of catalogue of common actions that could be taken. But so far I’ve not done it, but when a question came in asking about the possibility of a MIDI transpose function, I thought I’d put … Continue reading Simple MIDI Transpose
25.2.2025 21:01Simple MIDI TransposeHere are the build notes for my EuroRack 6HP Daisy Seed MCU PCB. Please Note: At the time of writing this has shown to be able to power up and nothing more. None of the IO or audio functions have been tested yet! I’ll update this post once I have some test applications to show … Continue reading EuroRack 6HP Daisy Seed MCU PCB Build Guide
24.2.2025 19:54EuroRack 6HP Daisy Seed MCU PCB Build GuideHaving recently acquired a Daisy Seed to play with, it seemed natural to produce an MCU board for use with my EuroRack 6HP MCU Experimenter Module. Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! If you are new to electronics, see the Getting … Continue reading EuroRack 6HP Daisy Seed MCU PCB Design
24.2.2025 19:47EuroRack 6HP Daisy Seed MCU PCB Design… liked this!
24.2.2025 11:59Comment on Waveshare RP2040 Matrix MIDI Monitor by ramazz0ttiFollowing on from my ESP32C3 OLED Mini MIDI Montor and Waveshare Zero, Pimoroni Tiny, and Neopixels this project uses a Waveshare RP2040 mini Matrix display. This is largely the same pinout as the other Waveshare boards, but includes a 5×5 programmable LED (i.e. neopixel-like) matrix. Warning! I strongly recommend using old or second hand equipment for your … Continue reading Waveshare RP2040 Matrix MIDI Monitor
22.2.2025 21:18Waveshare RP2040 Matrix MIDI MonitorI’ve seen a number of EuroRack format MiniDexed versions now, from 3D printed panels and designs, right through to commercial modules. It’s something I’ve been meaning to do for a while, so this is my first attempt at a take on a EuroRack format MiniDexed using a Raspberry Pi Zero 2 W. This is a … Continue reading MiniDexed EuroRack PCB Design
22.2.2025 10:31MiniDexed EuroRack PCB DesignIn reply to <a href="https://diyelectromusic.com/2024/05/07/esp32-wroom-educational-modular-synth-thing-pcb-design/comment-page-1/#comment-3079">Kevin</a>. <p><a href="https://diyelectromusic.wordpress.com/@diyelectromusic.wordpress.com" rel="ugc">@diyelectromusic.wordpress.com</a> cool. Keep up the great work!</p>
8.5.2024 15:51By: poetaster