Share your DIY controller project based on MIDI for 3rd Party Devices | AXE3 | FM3 | FM9 | VP4 |

mavriq said:
I'll have to mock this up then. I googled but didn't find anything specific. But as far as I know you're only limited by the speed of the muxer as far as chip selects are concerned. Which would mean that after about 10 million screens it would impact. But it certainly doesn't hurt to mock it up and double-check.

I'll report back with my findings. Just got to find a good way to attach all the screens, they all have the standard breadboard pin standoffs right now.
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Great! Do show your progress on your build 🤘

Cheers 🍻
 
I am going to use these guys for testing. No soldering etc.

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If they work, they would be perfect for working with lots of 8-pin displays. There are better ones that are 2-part for more permanent hookups.
 
mavriq said:
I am going to use these guys for testing. No soldering etc.

View attachment 147959

If they work, they would be perfect for working with lots of 8-pin displays. There are better ones that are 2-part for more permanent hookups.
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IDCs (what you've got pictured here) are great for passthru wiring like you'd use on a communication bus, but their connectivity/resiliency can be flaky over time. Just make sure you're using the right punchdown tool for the right gauge/pitch (this looks like 2.54mm TE-Connectivity at ~22 AWG).

Good luck with the experimentation and the build!
 
I just built a new version of my Ekano Midi Controller based on Arduino. I am new to this forum, so I cannot post pictures, which is ok.

However, I thought, this might be interesting for you guys (I am not a Fractal User). I created a website with all ressources: Source Code, 3D-Print-Models, Programming Instructions, Drill Templates,... If you search for "Ekano Midi Controller", you will find links for that (probably via Forums from Madbeanpedals or Line6...).
 
mfunky said:
I just built a new version of my Ekano Midi Controller based on Arduino.
I created a website with all ressources: Source Code, 3D-Print-Models, Programming Instructions, Drill Templates,... If you search for "Ekano Midi Controller", you will find links for that (probably via Forums from Madbeanpedals or Line6...).
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Thnx for that, will check it out
 
So I ordered some of these that I designed....

Top.png
Bottom.png

The ST7735s attach to the "bottom" of the board and the rest is on the top. It has an input on the left and a passthrough on the right to go to the next board. The ST7735s are muxed (haven't verified if that works yet in a large setup) and muxed footswitches that attach via the 2-pin headers. If it works, I will make some 3,4, and 5 screen versions after testing.
 
Your PCB build looks great.

My latest additional screen is a ST7789. That one is way better than the ST7735 imho. Faster and nicer view. My next build will be using the ST7789 and maby bigger screens while im at it ;). If you have the opportunity, check out the ST7789
 
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Axelman8 said:
Your PCB build looks great.

My latest additional screen is a ST7789. That one is way better than the ST7735 imho. Faster ans nicer view. My next build will be using the ST7789 and maby bigger screens while im at it ;). If you have the opportunity, check out the ST7789
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Thanks!

Ya I was looking at those as well. Saw some that were 2.4"... Had fun fitting it all in on the PCB with the 1.8s, I'm being a real glutton if I go with the bigger ones. :) The higher res would be nice. Pin compatible with the ST7739s I have.
 
St7789 is the top right screen that shows the tuner.. it runs at 50Mhz atm and is super smooth. This 2.8' is a better view for my eyes, but to big to have 16 of those imho . Yes 2.4' just may be the right size.

Also running 2 SPI channels, 1 for the ST7735 and 1 for the ST7789

The teensy supports 3 SPI channels, so there is still room for expanding. Maby place 2 other ST7789 beneath this one, there is still space but I have no use for them I think.
Could be something else.. idk 😁


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I've got a 3.5" ILI9488 that is 480x320 and has touch. I'm going to use that for my big screen. Since mine is a regular midi controller I want to be able to do configuration with it.

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I'm still trying to figure out how to protect the rest of the screens. I was thinking of a thinner piece of plexiglass under the box instead of over it. How has your top stood up to scratches etc?
 
20241126_170923.jpgPCB's came in, they look great. Just hope I didn't muck anything up when designing. They are only test bds anyway, I want to mount the LCDs wth standoffs as they are currently just going to be the solder joints... I'll report back when I have a board filled and tested. :)
 
Anybody have any good ideas for how to mount the LCDs to a PCB properly? There should be some kind of stand off, but damned if I can find them.
 
I bought these 8 pin and 5 pin solder connectors from my chinese friends.

Screenshot_20241127_223131_AliExpress.jpg

Now A screen can easily connect or disconnect without de-soldering

IMG_20240802_112553.jpg
 
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Hey there

  • does it even work on AXe-fx3, FM9?
    • Fx3 on Windows
      • OK:
        • Preset change. GUI doesnt update, but preset on the FXIII goes up or down.
        • Scene change.
        • Toggle the effects. GUI doesnt update, but FXIII does toggle.
        • Scrollable sysex messages
      • NOK:
        • Preset change with arrows in GUI
        • Frontpanel changes incl sysex info not updating the GUI (maby this is not possible at all to capture)
  • does it work well at all?
    • That depends on what it is supposed to do. Can you give some functional requirements?​

Thank you for adding the FXIII to your site

Cheers 🍻
 
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