List your hardware that is working and not working. #279
Replies: 52 comments 100 replies
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I have a Piemori Audio DAC Shim with PCM5100A chip and works ok. I"ve just test it on a RP2. |
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Also works fine with a RPi Zero w2 |
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RASPIaudio works fine.
In addition, as this board exposes pins needed for LCD and GPIO on a pass thru header, you can wire your IO through it, so only one item needs to plug onto the Pi
On June 9, 2022 7:27:18 AM EDT, arsamus ***@***.***> wrote:
I have a Piemori Audio DAC Shim with PCM5100A chip and works ok. I"ve just test it on a RP2.
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Sent from my Android device with K-9 Mail. Please excuse my brevity.
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PCM5102A DAC Decoder GY-PCM5102 from AliExpress works a treat |
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IQaudio DAC+ from berrybase.de works great (5122 chip) |
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Pcm 1502 sound card, 1602 Winstar OLED display white/black. RPI 4b with 4gb ram. 4n35 opto isolator for the MIDI input. 19" plastic rack case with front USB host port and rear USB host port, 5 pin MIDI in/out/thru, left and right quarter inch jacks, power and a slot for accessing the SD card for updates.
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very nice !, Hope I can create this as well |
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Hi, |
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First place for the most creative housing! 👍 |
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Golden ! |
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Hi, I have the same configuration, excepting the RPI 4. Unfortunately I'm not able to have the Akai MPK Mini working (I have the MK3 model). Did you have to do something particular in the configuration files? |
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Hi, |
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Hi,
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Hi, The MAX98357A on a RasPi 4B (4Gb) works ok but is rather quiet even turned up to the max and the gain pin set to 15dB via a 100K resistor to GND. I'd go for one of the PCM51x2 boards if you can plus a class D amplifier on the output such as the TPA3122... I have to say some of the projects above look amazing especially craigyjp's !!! Cheers, Dan |
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MIDI keyboards plugged into USB on Raspberry PI 4: |
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Same problem with the MPK Mini 3, I just discovered that switching from the RPI 4 to the RPI 3 solved the issue. |
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I can confirm that the AKAI MPK mini 3 now works with release MiniDexed_2022-09-24-d53aeb4.zip. Tested on RPI 4. |
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Thank you developers! |
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Just a note from my thread that might be worth repeating here, if you have issues on first boot, it may well be down to your SD card, so if one doesn't work, try any others you have around. |
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Please retry with the latest build. There is now improved support for Novation devices. |
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Novation Impulse 61 (latest build) |
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Komplete Kontrol S88 Mk2 - Works |
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Yeah -- that'll teach me not to work late at night... (thought 1 was opposite 4...) Do I need a new Optocoupler? Thanks |
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🤷♂️ |
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It does. I breadboarded it up and it works perfectly |
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Good to know. Then give yourself enough time to complete. 😬 |
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Yeah. |
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I had a successful smoke test of the following components today:
No trouble at all getting MiniDexed running after updating the Pi firmware. Audio is about what you'd expect from the default interface. I'm planning on adding the following DAC for better sound, then mounting it all in a case:
I'm so excited to get those sweet 80s sounds going!
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Behringer UMA 25S keyboard does NOT work as a USB device, but does work when connected through an M-AUDIO midi interface. I did check the USB side on a different computer to verify that indeed it is sending midi as expected over USB |
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Use a powered usb hub?
…On August 26, 2023 7:20:00 PM GMT+02:00, akivaatwood ***@***.***> wrote:
Same problem here. miniDexed works fine hooked up to a midi keyboard via USB.
USB to MIDI cable is flashing while the PC sends midi data
Any suggestions on testing the midi interface?
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Hi,
With the HAPAX you can control the 8 Midi channel of the minidexed and assign the effect to the encoder
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Welcome @dalingux. That looks cool! I am sure it sounds cool, too 👍 |
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Yamaha P-115 digital piano Is it worth upgrading to a better Pi? The Pi2 seems to handle everything fine. |
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As long as you don't hear stuttering or similar artefacts, there is no need to upgrade if 8 voices are enough. With the Pi 4 and (at some time) 5, we may be able to do more. Same for more compute-intensive effects. |
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Ah, so something for a future build then. Thanks :) |
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I can confirm eight Dexed instances on the Pi ZERO2W. No dropouts and MIDI thru transmits seamlessly. Components used: PCM5102 DAC
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Just curious which External USB to MIDI adapter you used? |
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I can verify this adapter works perfectly, but be warned not all similar-looking adapters are the same. I've purchased versions that lack the power from the USB side to power the unit.
https://www.amazon.com/TENINYU-Synthesizer-Microphone-Instrument-Converter/dp/B07L8KFYBK |
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I must admit I'm always a little wary about this style of MIDI interface, see: http://www.arvydas.co.uk/2013/07/cheap-usb-midi-cable-some-self-assembly-may-be-required/ But the general consensus seems to be "probably ok if only playing notes, but not sure they'll cope with lots of data at any time" so I take that to mean if you're doing sysex dumps or lots of pitch bend you might run into issues... But I guess the real problem is the variability - one lead might be fine, but another really problematic, so it really is a case of YMMV... Kevin |
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I just wanted to add a dac 5102 card (12 euro on amazon) to the mix. The following has trs 3.5 mm and stereo phono jack outs. I set the jumper as seen in the picture. I've tested with the origianl pi, the b+ and a pi zero (v1.2) using an akai MPK 25 and a little LPK 25. The old MPK 25, with a 2 amp 5 volt power supply works fine drawing power over any of the pis, but the pi will get warm. I've also tested an IQaudio pi-codec zero which DID not work. But I'll try setting it up again. GY 5102 worked as expected, but I want phono outs to build into the MPK. EDIT: the pi-codec zero uses a Dialog Semiconductor DA7212. The card has stereo in and amplifier so it's not really for this project anyway :) I haven't tested the my piaudio hat, but that's also over dimensioned for this. My old Audio Injector (I2C, wm 8731) didn't work, not surprised. |
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I got everything working with a PI4 (4Gb) eventually:
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Found another cheap OLED with comfortable size. The ones mentioned in the Wiki are quite small. This one is 1.5 and is fully compatible with SSD1306. |
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Hi Plamen, my eyes would also be happy with a display of this size. I always had doubts about the compatibility and that's why I never ordered it. Thanks for your tip, my order is out 🤩 |
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I also had doubts but 5 EUR is not that much so I decided to try :). There are many others like this using the same chip SSD1309 even with green color which also should work. This one is yellow (the phone camera messed the color). |
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Nice. The thing to watch out for is if these are powered by 5V or 3V3 and if powered by 5V make sure they don't pull the I2C lines up to 5V without any kind of level shifter as that is too high for the Pi. In my experience of these larger screens, some include level shifters and some don't. If the photos of the rear of these specific boards are accurate, it looks like they might include the shifters, but do check with a multimeter first. More details of what to watch out for and how to spot/work it out on the wiki here: https://github.com/probonopd/MiniDexed/wiki/Hardware#ssd1306-128x32-and-128x64-i2c-oled Kevin |
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It is powered by 3.3V like the small one 0.91 described in Wiki and also has the same pinout. Technical data says it can be powered from 3.3 to 5V. |
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Interesting. I have a bunch of these (all rated at 5V) and get them for about 3 Euro here in Germany. So, I thought I'd kick the can and it works just fine (also with rotation) on @diyelectromusic pcb for the 2011 pis |
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I had the same issue with the build using the pcb above. @diyelectromusic did I err somewhere? Or just build in the wrong encoder? I actually removed the dac since it's difficult to fix it in place on that design above. And the sound quality is fine internal for this purpose. If you look just above your post, you can see the larger version DAC I've used with a pi zero. It's a lot easier to get into place (but big!) and it has rca outs! Those you can get for 10 to 15 euros. |
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I think different encoders get wired up differently internally, but I'm not really sure! I think this will always be one of those "try it, and if you need to switch them, just switch them" things. Kevin |
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It's not really an issue with an encoder. With pots it can be annoying, but I have a couple of devices that are poled that way, and as long as I know which device, it's automatic that I just swap my swipe behaviour :) |
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Err, am I slow. I just switched the pins for clk and dt (in the config!) and now they go in the 'right' direction. |
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Worked with my KY040 too. Option to change the code is probably better but easier to just swap cables :) |
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I tried a Raspaudio DAC Audio+ V3 HAT with my Pi2. It worked as a HAT, but did not send any information thru the HAT, and I couldn't get it to work as a breadboard unit, so I decided to go with the Raspberry Pi Audio DAC PRO instead, which works great. I have soldered external 1/4" jacks for L+R output, as well as headphone output. Left to solve: Main volume output (should be available thru GPIO's on the Raspberry Audio DAC PRO, but most likely not supported in the MiniDexed code). The soundcard also acts unexpected as the added headphones jack activates only when I insert mini-jacks in the original headphone output (something with the "Detect" pins, still to be unraveled). |
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my rotary encoder hardly worked at all without additional components. When I soldered 2 capacitors (22nF) between ground and the corresponding pins, it worked much better. Finally, I "cleaned" the signals using an SN74HC14N. I always connected 2 inverters in series for this. I used a standard 5V MIDI input circuit (6N138 etc.) and used a cheap level shifter (4-way Ebay or Amazon) to get it from 5V to 3.3V. Works without any problems. |
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M-Audio Keystation Mini works nicely, the + and - buttons work by default for changing instrument has anyone tried the old AIY Voice hat? i got a couple going unused and would be kool if it can work on this |
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So it turns out, yes, you can use the V1 AIY Voice HAT as an audio output - provided you preset the "Amp Enable" pin (GPIO16) to HIGH on boot. Then it just acts as a I2S DAC like any other :) More here: https://diyelectromusic.com/2024/10/12/aiy-voice-hat-and-minidexed/ Kevin |
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oh this is great news :) |
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The M-Audio MIDISport Uno, strangely, doesn't work with Minidexed. |
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Not having one of the devices I can only go by what I'm reading online I'm afraid... the implication of those links is that the driver will first load the fw on connect using the plug-and-play udev setup in Linux, so yes, I'd expect the driver to be supported fine in any "traditional" OS. Although the fact that the support pages are talking about a driver from m-audio does seem to imply there is something other than basic OS class compliance going on... Although that linked m-audio page in the original post also lists: so who knows? Ah, there is this little gem in the manual though... So looks like only recent versions of the device would work... As I say, the HDMI log might give a clue. Kevin |
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Curiously, on macOS it is recognized as a MidiSport 1x1 |
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Picture of the board. EDIT: some extra information about the chip: http://www.linux-usb.org/ezusb/ https://github.com/mbed-ce/fxload Maybe support for this devicd can be added in Minidexed? 🤔 EDIT 2: I'm a moron, I forgot the reason this works is because I previously had another M-Audio product installed on my Macs and I had to install the drivers for them. |
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Downloading firmware to USB devices is out of the scope for this little project, sorry. Especially since we don't have the hardware to test with. Maybe you can get the "new" revision? |
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Luckily I was gifted this so no money lost, but in the future I'd rather spend money on a more reputable brand with no crazy hardware revision shenanigans included. The only reason I looked into this is because the cheap Amazon USB-MIDI adapter I use does produce stuck notes from time to time (admittedly very rarely) while this MidiSport has been rock solid on my Macs, even with massive SysEx transfers, so I was hoping to use this with my Minidexed. Oh well, it was worth giving it a shot. EDIT: at least I've left some good info about those M-Audio USB MIDI devices and their compatibility, as people might see the post I mentioned before and think about getting one. |
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Working fine with Pimoroni Pirate Audio DAC Headphone on Pi 4 (with modified .ini file). Using it in 'usb gadget mode' played from Cubase 10 on Mac OS X (seen as MiniDexed in the midi devices). Single usb-c to usb-A cable for power + midi and audio out from the DAC going to my mixer. I sometimes get some digital noise on the output, but I don't know where it comes from. No latency. |
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Just to confirm that the older M-Audio Uno devices don't work as outlined above, I just finished my project and started running into the hanging notes.
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and others
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List your hardware in this thread that is working, as well as not working with miniDexed
I can confirm that a
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