VU2DLE controller

[Marc Jatteau]

Hello,
I'm using DL1CYF's pihpsdr with the RadioBerry and a Raspberry Pi 4.
I'd like to add the VU2DLE controller to it.
Is it compatible? If so, what's the method?
73 by Marc F6GKG

[Yado-san]

Hi   Marc,

I also tried making a prototype of Dileep's controller in the past.
Recent RPi-OS do not have wiringPi, so an error will occur.
In addition, It's using the CAT command, you will have to modify the pihpsdr source code (wiringPi.h).

Therefore, Programming skills are required to use the Dileep controller.

 And...

-If you want a panel-type controller, I think it would be smart to use Dileep's hardware as is and to use the PICO as a MIDI controller.
 https://groups.google.com/g/radioberry/c/WvNKvEm2hPs/m/WVwfJjGjAAAJ

-You can also use store-bought MIDI controllers, sach as BEHRINGER CMD PL-1, Hercules DJControl, etc.

-If you want a desktop type, Mario's hardware and software are good references.
  https://groups.google.com/g/radioberry/c/WvNKvEm2hPs/m/pq9hXrvjBAAJ

-The Lynovation CTR2-Midi controller by ku7qh that Ron mentioned.

  https://ctr2.lynovation.com/ctr2-midi/

 ..I want this one too, but recently, JA-Yen has been weak against the dollar, so prices are high and it seems that i have to make it myself.

Hope helps

Yado-san, jg1twp

2025年8月9日土曜日 22:32:51 UTC+9 Marc Jatteau:

[f6gkg45]

Hello Ravi
Thank you for your help, but sorry it's not working.
73 by Marc F6GKG

---

From:	Ravi Miranda <ravim...@gmail.com>
To:	Marc Jatteau <f6g...@gmail.com>
Cc:	Radioberry <radio...@googlegroups.com>
Date:	dim., août 10 2025 06:40:01AM UTC
Subject:	VU2DLE controller

Hi Marc,

1. Flash the firmware in a RPi Pico

2. Connect the Pico to the Pi via a usb cable

3. Connect switches and encoder to designated pins

4.boot up radio, select the acm0 in the CAT / TCI menu

Should work.

Ravi/M0RVI 

I'm here to add more value to the world than I'm using up.

73 by Marc F6GKG --
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[f6gkg45]

Hello Yado-San
Thank you for your help.
I prefer the board solution.
So I reprogrammed the Pico as a MIDI console, and I hope I did it correctly.
It's not working right now, but there's the last line I don't understand :

After starting pihpsdr go to midi configuration tool : load file Pico CircuitPython usb_midi.por.midi or define it with learning tool.

Can you help me?

73 de Marc F6GKG

---

From:	Yado-san <shuk...@gmail.com>
To:	Radioberry <radio...@googlegroups.com>
Date:	dim., août 10 2025 07:25:16AM UTC
Subject:	VU2DLE controller

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[SNAIL]

Here is step by step instruction.

1. Boot flash Pico.

2. Connect to RPI-4. Should have CIRCUITPY drive installed on RPI-4.

3. Install Adafruit MIDI library in CIRCUITPY/ lib directory.

4. Place Pico CircuitPython usb_midi por midi in CIRCUITPY root directory

5.Repalace code.py 

6 Restart PI-4 and start pihpsdr.

7. In PIHPSDR go to Menu/MIDI. Click MIDI Enable. In drop menu chose Pico CircuitPython usb_midi.por . Then click Load.

8. If you want to change key/wheel assignment, click Clear, MIDI Configure, assign keys how you want then SAVE and use it 

Sorry can't attach the picture. GoogleGroups is garbage platform, every time says message too long if you attach picture.

[Yado-san]

Hi  Marc,

>> After starting pihpsdr go to midi configuration tool : load file Pico CircuitPython usb_midi.por.midi or define it with learning tool.

 I looked for which text it was...

 and i see, it's remis Pico2040 Midicontroller, isn't it.

Please see the third image bellow.
https://groups.google.com/g/radioberry/c/WvNKvEm2hPs/m/WuzbaieHAAAJ
This is the MIDI learning settings screen for pihpsdr (dl1ycf).

Click 'MIDI' from the menu, and you can freely assign pihpsdr functions to each button and encoder or slider on the MIDI controller.
For more details, please refer to the pihpsdr manual. 

Yado-san, jg1twp

1. 
   

[f6gkg45]

Hello everyone.
Sorry, I've tried several files and I still get the same thing.
73 F6GKG

---

From:	SNAIL <snailex...@gmail.com>
To:	Radioberry <radio...@googlegroups.com>
Date:	dim., août 10 2025 03:29:18PM UTC
Subject:	VU2DLE controller

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[Yado-san]

Pico is recognised and checked in the image, so it seems your MIDI controlleris fine.

Are the values not displayed when you press the keys?

Also refer to the pihpsdr manual.

https://github.com/dl1ycf/pihpsdr/releases/download/v2.4/piHPSDR-Manual-current.pdf
"10.3 The MIDI Menu" _  "self-learning" configuration

[f6gkg45]

No, nothing happens in the Midi menu window.
However, I'm not sure I put the right files: adafruit matrix keypad in lib and code.py in the root directory.
Could you tell me where to find them or send them to me?
Thanks in advance.
73 F6GKG

---

From:	Yado-san <shuk...@gmail.com>
To:	Radioberry <radio...@googlegroups.com>

Date:	lun., août 11 2025 04:10:46PM UTC
Subject:	VU2DLE controller

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[Yado-san]

Hi Marc,

Oh, sorry to heare. Is there no MIDI output?
If you open the following URL on your PC, you can easily check the output from the MIDI controller.  
https://mikatahara.github.io/SendReceive/

First, be sure to follow Remi's code and instructions.
If you do not mind using my (Copilot) code and lib files, I have already posted it.  
https://groups.google.com/g/radioberry/c/WvNKvEm2hPs/m/IvoUOKVCBQAJ

I am not expert, so used Remi's code and Copilot to create code and learn how to debug it.  
For debugging, I highly recommend to use generative AI tools such as free Copilot, Gemini, or ChatGPT.

-> For example, paste the entire code.py and ask the AI to explain this code's functionality and description.
It will provide an explanation immediately—it's truly amazing!

Generative AI is convenient because it can instantly analyse existing code,  
point out issues when the code doesn't work, and answer other questions. :)
GL. Yado-san

 

[SNAIL]

Hi Marc.

I had the same issue with MIDI installation. The problem was that not every CIRCUITPYTHON version supports all libraries. I rolled back to Circuitpython 8, installed as a bundle and everything start working.

Links you need to read 

remis / Pico2040Midicontroller · GitLab

Frequently Asked Questions | Welcome to CircuitPython! | Adafruit Learning System

From my experience if you use DL1CYF pihpsdr you have control on RF Gain working but something else doesn't work. If you use G0ORX/N6LYT pihpsdr RF GAIN doesnt work no matter what value you put in. From the start RX GAIN is 14 but once you touch knob it jumped to 0 and will remain in zero position. But you can change it on touchscreen.

[Jatteau Marc]

Hello Yado-Scan.
I tried it, and the SEND buttons didn't work.
73

[Ravi Miranda]

Hi Marc,

1. Flash the firmware in a RPi Pico

2. Connect the Pico to the Pi via a usb cable

3. Connect switches and encoder to designated pins

4.boot up radio, select the acm0 in the CAT / TCI menu

Should work.

Ravi/M0RVI 

I'm here to add more value to the world than I'm using up.

On Sat, 9 Aug 2025, 14:32 Marc Jatteau, <f6g...@gmail.com> wrote:

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[jatteaumarc]

17 / 5 000

Here is the attached photo when I click under the menu type pihpsdr closes

---

From:	SNAIL <snailex...@gmail.com>
To:	Radioberry <radio...@googlegroups.com>
Date:

dim., août 10 2025 03:29:18PM UTC

Subject:	VU2DLE controller

Here is step by step instruction.

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[jatteaumarc]

I do not understand, the files are to be installed on the pico or on the RP4 ?? In any case in the menu/Midi there is nothing loaded and PicoCircuitPython usb midi.por at the top of the window.
73 Marc

---

From:	SNAIL <snailex...@gmail.com>
To:	Radioberry <radio...@googlegroups.com>
Date:

dim., août 10 2025 03:29:18PM UTC

Subject:	VU2DLE controller

Here is step by step instruction.

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[f6gkg45]

Hello SNAIL
Forgive my ignorance, but I still haven't figured out what file I need to put in the LIB directory.
When I click on:    https://github.com/adafruit/Adafruit_CircuitPython_MatrixKeypad
I arrive at another Github, and I don't know anymore.
73 by marc F6GKG

---

From:	SNAIL <snailex...@gmail.com>
To:	Radioberry <radio...@googlegroups.com>

Date:	mar., août 12 2025 05:24:08AM UTC
Subject:	VU2DLE controller

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[SNAIL]

Ok Marc I have installed DL1YCF pihpsdr so we can play in same sand box as it has a difference with g0orx midi menu.

Follow step by step instructions.

1. Flash RP2040 with .UF2 file and notice the version of Circuitpython. I had a problem with latest version so I rolled back to version 8.

2. Go to Remy github and download code.py and CircuitPython usb_midi.por files. Both files place in root directory of CIRCUITPY drive.

3. Go to Adafruit and download libraries bundle for .UF2 version you use. This is important as some not compatible.

4. Unzip bundle folder and move all files in lib directory of CIRCUITPY drive.

5. Restart RP-4.

6 Start pihpsdr and go to MIDI menu.

7. Mark CircuitPython usb_midi.por as midi device.

8. Push any button or move any knob on yours control panel. You should have popped up Channel and NOTE for this button or knob.

9. Assign TYPE if needed and ACTION. Default action is NONE

Link for bundle 8 I already posted. If you decide to go with latest version here is link to download bundles. Releases · adafruit/Adafruit_CircuitPython_Bundle

Good luck.

Too bad Google Groups not allowing me to attach pictures. 

[Jatteau Marc]

Hello SNAIL
I still can't do it.
My skills are very limited.
To flash version 8, I don't know how to use bundles.
For the libraries, the folder is 1.5MB and doesn't fit in the Pico.
I think I'll stop.
Thank you for your patience.
73 by Marc F6GKG

[SNAIL]

You CAN DO IT Marc. I'm almost 70 years old fart did it, without any programming experience.

Let's try this.

1. Wipe out everything from RP2040 using "nuke" flash. How to is here. Link to nuke flash at very bottom.  Installing CircuitPython | Getting Started with Raspberry Pi Pico and CircuitPython | Adafruit Learning System

Here is the CircuitPython 8.2 what i use. After you wiped RP2040 follow the procedure and place this .UF2 file on RP2040.

Place replace code.py file as Remy instructed and place CircuitPython usb_midi.por in RP2040 root directory.

 The bundle I use i can't attach because Google Groups message size restrictions. Download bundle 8 from here Frequently Asked Questions | Welcome to CircuitPython! | Adafruit Learning System , unzip and transfer files in to "lib" directory on RP2040.

You can do it on your laptop or desktop computer. Or directly on Raspberry PI 4. Let me know how it's going. We will win, don't give up.

[Jatteau Marc]

Hello SNAIL
Thank you for your encouragement.
I followed the entire procedure, everything went well except for the files in the LIB directory due to lack of space in the pico's memory.
My procedure:
Unzip the Bundle 8 file, then extract the LIB directory and copy it to the pico's root directory in place of the existing one.
And that's the problem because it's 1.5MB.
Tell me if I did it correctly.
73 by Marc F6GKG

[SNAIL]

Hi Marc.

What RP2040 do you have. By datasheet RP2040 memory size is 2.2 M. Library size is 1.57 M. Anyway, you can try to copy only lib files you needed. Try to download and copy folder named Adafruit_CircuitPython_Matrixkeypad-main in to lib directory on CIRCUITPY drive.

I hate this Google Groups platform . Can't attach picture it say message too long, try to post shorter message. Cant attach folder. Download all thise files, create folder named Adafruit_CircuitPython_Matrixkeypad-main and all files put in this folder. Folder put in lib directory on CIRCUITPY drive. It might be RP2040 needs more lib files to work as midi device. Just look in bundle lib folder for something like midi library, I/o library to add on RP2040.

[Marc Jatteau]

For the Pico, here it is in pictures.

I tried everything you sent me, but nothing worked; the MIDI window remains blank.
I even used Remy's.
For now, the pico is wired with wire. I haven't installed all the buttons; there's just the VFO and one of the four rotary knobs.
I'll double-check all the wiring and replace all the missing components.
I'm also going to buy another pico.
I'll keep you posted.
73 by Marc F6GKG
(Google translation)

[Wim Gmail]

Did u use 2  10kohm resistors on every knob and wheel for VFO.

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Op 14 aug 2025, om 14:17, Marc Jatteau <f6g...@gmail.com> schreef:

[Ed Marciniak]

The pico presents a small usb drive. Files are dropped on there. When the pico is reset, code.py executes on the pico by its local micro python environment.

I believe the instructions should’ve had you restart the pico not Pi4(perhaps autocorrect messed up the original text?).

After the pico is restarted, the midi device would be available to pihpsdr.

---

From: radio...@googlegroups.com <radio...@googlegroups.com> on behalf of jatteaumarc <jatte...@gmail.com>
Sent: Sunday, August 10, 2025 11:55:06 AM
To: radio...@googlegroups.com <radio...@googlegroups.com>
Subject: Re: VU2DLE controller

 

To view this discussion visit https://groups.google.com/d/msgid/radioberry/dc069d99-f429-4b4f-a9fd-29065868d18b%40gmail.com.

[Ed Marciniak]

It’s worth mentioning that there are variants of the RPI2040, like the Pi Pico Plus 2W from Pimoroni, which has 16MB flash, 8MB of pseudosram, WiFi and Bluetooth and a USB-C connector. While the USB-C is still only a 12Mbit/sec it could provide more power than a micro-B usb connector.

The power draw at idle is 75-85 milliwatts or 15-17mA…yes really I measured one.

If you’re worried about running short on storage, that’s an off the shelf option.

---

From: radio...@googlegroups.com <radio...@googlegroups.com> on behalf of SNAIL <snailex...@gmail.com>
Sent: Thursday, August 14, 2025 1:50:50 AM
To: Radioberry <radio...@googlegroups.com>
Subject: Re: VU2DLE controller

 

Hi Marc.

What RP2040 do you have. By datasheet RP2040 memory size is 2.2 M. Library size is 1.57 M. Anyway, you can try to copy only lib files you needed. Try to download and copy folder named Adafruit_CircuitPython_Matrixkeypad-main in to lib directory on CIRCUITPY drive.

I hate this Google Groups platform . Can't attach picture it say message too long, try to post shorter message. Cant attach folder. Download all thise files, create folder named Adafruit_CircuitPython_Matrixkeypad-main and all files put in this folder. Folder put in lib directory on CIRCUITPY drive. It might be RP2040 needs more lib files to work as midi device. Just look in bundle lib folder for something like midi library, I/o library to add on RP2040.

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[Jatteau Marc]

Yes

To view this discussion visit https://groups.google.com/d/msgid/radioberry/BL3P221MB0321435F30B6FADAA21D9078FD35A%40BL3P221MB0321.NAMP221.PROD.OUTLOOK.COM.

[SNAIL]

I found what was wrong with installation, Marc. 

1. Boot RP2040. RPI-RP drive will appear. Place .UF2 8 file on RPI-RP disk. Disk will appear now as CIRCUITPY

2. Place code.py and CircuitPy usb_midi.por files in root directory CIRCUITPY
3. Go to unzipped adafruit-circuitpython-bundle-8.x mpy and copy only lib folder into lib folder on CIRCUITPY drive.

Connect RP2040 to RP-4 and enjoy midi controller.

[SNAIL]

Regarding hardware. Your Pico should work just fine, don't buy another. Some people report it will work without resistors but I'm not sure it will be stable. Some people report not every optical coder working with 5 volt power supply. I use cheapest from Amazon with clicks for CNC hobbies. Working as a champ. 

I don't know how RP2040 will behave if not all circuit is completed. Could experience some problems and program interruption? Who knows.

73, KK7OEA

[Marc Jatteau]

Hello SNAIL
I received your last two messages. I'll take them into account.
But for now, I'm starting from scratch with the controller wiring, installing all the components, and maybe recharging the PIHPSDR.
Thank you again for your advice and patience.
I'll let you know as soon as possible.
I hope the translation is correct; I'm using Google. HI...
73 from Marc F6GKG

[Yado-san]

Hi Marc, SNAIL, ALL

I followed SNAIL's helpful instructions and tried everything from installation to operation. 

So, attached the images. 

If your PICO is not broken, it should work, so please give it a try. 

- RaspberryPi PICO & CIrcuitPYthon8.2.9 & remis Pico2040Midicontroller -

1) Download CIrcuitPYthon8.2.9 and compatible libraries for v8.

    https://adafruit-circuit-python.s3.amazonaws.com/index.html?prefix=bin/raspberry_pi_pico/

    https://learn.adafruit.com/welcome-to-circuitpython/frequently-asked-questions#faq-3105289

  

  

 2) Download the PICO initialisation file. (If you have installed a different version only.)

 

and flash_nuke.uf2 into PICO root forder.

3) Copy the library and code.py to the PICO folder in Circuitpython.

4) Debug. 

    -> I checked the operation using the Teraterm software (Win11-PC, 115200bps).

 4-1) When the library name and hierarchy are correct. Good! :)

     NOte: you can verify the MIDI program's keypad operation without any wiring PICO.

 4-2) When fogot MIDI lib. -> NG :(

Note that all of the above information was learned from Copilot (free version). 

For things like Python, which many people post web site and can be confusing for beginners, it's faster to ask AI, so please give it a try.

73, Yado-san

[SNAIL]

Hi Yado-san. Do you think adafruit_midi is used by RP2040? First time I did try to start Remy midi controller I put only adafruit_matrixkeypad.mpy file it wasn't working. Then I put whole library on RP2040 and it start working. Now I have folder named Adafruit_CircuitPython_MatrixKeypad-main and adafruit_matrixkeypad.mpy file. Which is in use and what else in use I don't know. 

There is a huge difference in MIDI menu in DL1CYF and G0ORX/N6LYT pihpsdr. G0ORX/N6LYT pihpsdr you can load midi.por file or reassign controls. RX GAIN doesn't work.

DL1CYF pihpsdr doesn't load midi.por file. You have to touch wheel or button and assign function from start. RX GAIN is working but looks like reversed. Need to check it. 

[Marc Jatteau]

Hello Yado-SCAN
I followed Yao-San's method and I have excellent news for you: Hooray, it works!!!

I hope you receive the image.
Okay, I can now take care of the PCB.
Thank you very much for your help.
73 by Marc F6GKG

[Yado-san]

Hi  Marc, 

Thank you for your kind message.
I just attached the image that SNAIL was unable to send. Thank you, SNAIL.

Hi SNAIL,

>>I put only adafruit_matrixkeypad.mpy file it wasn't working.

True! needed the Adafruit MIDI library. Without MIDI lib, an error message appears and it doesn't work.

see my latest post ... 4-2) When fogot MIDI lib. -> NG :( 

The required libraries and the hierarchy placed under the lib/ folder caused an error saying ‘Library not found!’ when not matched with code.py. 

At first, I repeatedly asked Copilot, ‘Why is there an error? and Pse, fix the code!’ HiHi...

1. remis
2.  Pico2040Midicontroller / code.py :

  :

  import adafruit_midi
  import adafruit_matrixkeypad
  :
  keypad = adafruit_matrixkeypad.Matrix_Keypad(rows, cols, keys)
  :
 #import midi
  from adafruit_midi.note_on import NoteOn
  from adafruit_midi.note_off import NoteOff
  from adafruit_midi.control_change import ControlChange # pour reconnaissance des commandes roue VFO

 # changement de channel en 3 au lieu de 0 comme exemple hpsdr midi
  midi = adafruit_midi.MIDI(midi_out=usb_midi.ports[1], out_channel=3)
  :

 

>> a huge difference in MIDI menu in DL1CYF and G0ORX/N6LYT pihpsdr

I was also confused because there were no LOAD or SAVE options (*.inp file)  in the MIDI settings window.

The DL1YCF version of the pihpsdr manual explains the learning function as follows: "This is used to implement a “self-learning” configuration. To explain this in detail ..."
Personally, I prefer the self-learning method for more intuitive settings.

Additionally, regarding the Pico CircuitPython usb_midi.por.midi file, if you insert it at the beginning of the '00-01-02-03-04-05.props’ file updated when pihpsdr exits, it seems that Remy's MIDI settings can be applied as is. I figured this out the day before yesterday. Hi...

GL, Yado-san

[Wim Gmail]

Hi Yudo-San.

My Radioberry project is finally complete with midi controller.

All knobs, button and wheels are working correct now. What a great midi project.

A happy user.

Wim

PE1PWR 73s.

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Op 15 aug 2025, om 11:46, Yado-san <shuk...@gmail.com> schreef:

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[Yado-san]

Hi Wim,

Wow! That's wonderful. :) 

It's only a small change, but I'm really happy that I can build my own radio using Radioberry2 and pihpsdr, which are still evolving, through my own efforts.

Tnx, Yado-san.

[Wim Gmail]

Great Yado-San.

Indeed is great to build your own Equipment.

For me the pico pi solution was the last problem I was facing. With your help last problem is solved.

Wim

Nice weekend

PE1PWR

73s

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Op 15 aug 2025, om 18:25, Yado-san <shuk...@gmail.com> schreef:

[pa3gsb]

Wim,

Do you have a small demo of what you have achieved!

Enjoy your radio.

73 Johan

PA3GSB

Op vrijdag 15 augustus 2025 om 21:16:58 UTC+2 schreef wcast...@gmail.com:

[Wim Gmail]

Of course Johan.

I will put a little video in this forum what I have done. And show how things look like when it works.

Wim

PE1PWR 73s

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Op 16 aug 2025, om 09:22, pa3gsb <pa3...@gmail.com> schreef: