Midi controller

huge thanks to the amazing rp2040 skeleton project. it helped immensly setting up this project. i probably couldn't have done it without

<still need good name :)>

A lighting focused midi controller

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Why?

I started this project as i wanted phisical controls to go with the mydmx3 dmx controller software.
Mydmx3 practicly only support midi as data in/out next to dmx out. So a midi controller it is.
There are more than enough midi controllers on the market but almost all of them are audio focused in the controls. I couldn't really vind any that i would like for controlling lighting. So i decided to design and build my own.

Requirements

I set a couple of requirements that i definetly wanted in my controler. As following:

Controls:

• motorized faders. Mostly for dimming controls, enough in the playback section and 1 as Master.
  I chose motorized so they could sync with the controlling software if the value changes and for for example if you were to switch banks to a new set of controls. (mydmx doesn't support that but i wanted to design my controller to work with almost anything.)

• Buttons. for playbacks/executors en general control, a whole lot.
  Of Course. what would a controller be without a lot of buttons. I also want them to have black with transparent text keycaps and rgb leds below to show the status of the button.

• Encoders. Mostly speed control but could also be dimmer, at least 1 per "channel"/collumn and a couple spare. I wanted some encoders to be able to change the speed of scene/cue playbacks. But also for for example a dimmer channel dat isn't changed often but often enough to have phisical controls for.

• Small Displays/Scribble Strips. channel/collumn names, one per channel/collumn.
  To show what cue/scene was mapped to that channel/collumn. If i implement bank switching inside the controller (as mydmx doesn't support like anything. only the most basic midi triggering) i want to see what cue i have mapped on that fader/buttons. And maybe also to show the fader/encoder value when changing. For if you want it to a specific value and the visual position isn't enough.

• Keypad. just one, numbers 0-9 + some modifiers.
  Should speak for itself. just general number inputs and modifiers.

• "Master" Display. (relatively) big display, just one.
  A around 3a4" touch display for configuration of the controller and general info. Main controls for anything happening inside the controller.

• Leds. A lot. most RGB some just Amber.
  I want all the buttons to have a seperate controllable RGB led to show the buttons status. and about 16 mono Amber leds around the encoders to show their value.

Conectivity:

• usb midi. one usb-B port. To connect to a pc running for example mydmx.

• hardware midi. 2 or 3 din-5 ports. To connect to other midi gear or any controller that has hardware midi ports on it. Should have the same data as the usb midi port

• External Switch Ports. 2a3 x 1/4" jack. To connect external footswitches or pedals. should support normal on/off footswitches and maybe one or 2 can have analog value support.

• Desk Light. xlr-4?. A xlr connector that support a lot of desk lights. preferably xlr-4 so it isn't confused with audio or dmx signals. Sadly there isn't a standard for desk ligths as far as i can find.

• Powercon Socket. Blue one. maybe also power out.
  Of cource. It needs some power to run. prefereably powercon (true1??) but a C14 socket would also work.
  with the motor faders and a lot of leds. Usb supplied power wont be enough.

And here are some features i want to support but arent required for the mvp:

• USB Hub. Probably USB-A sockets.
  To connect more devices downstream from the controller

• RTP MIDI. Wifi/Ethernet
  Using a ESP32 or similar to handle the network stack and enable the controller to communicate either wireless or via a ethernet cable.
  Adding to the already available midi connection options of USB-MIDI and hardware-MIDI

• Web Server.
  Maybe a configuration webserver as the display will be quite small. would also run on the ESP32 that handels the network.
  it connects to the main rp2040 using uart.