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Arduino Axe-Fx control library

unix-guy

Legend!
I really don't understand why even top-end units like the FC still have a daggy old two-line LCD display. TFT screens aren't *that* much more expensive, but you can draw whatever you want.
Maybe durability? Visibility under different lighting conditions?

I don't know, just tossing out ideas.

I like what you've got going on so far!
 

pauly

Fractal Fanatic
HI Tyson,
So - Building the physical MIDI connection to the Arduino - What is your recommendation?
Thanks
Pauly
 

tysonlt

Inspired
Any tutorial is ok for midi out, you just need a 220 ohm resistor. Connect to ground, 5v, and hardware tx pin. For midi in, you *can* connect to the rx pin in the same way, but you should really use an optocoupler. Google midi in opto for some schematics. You can get away without it, but I wouldn’t.
 

oson00

Inspired
...if you need a flexible MIDI-board for arduino with 3 MIDI Ins and Outs... Display-connection, connector for sd-card reader and some more pins for others.... contact me! :)
 

pauly

Fractal Fanatic
Uuumm.. ok?
oson00 , please tell me more,

Pauly

...if you need a flexible MIDI-board for arduino with 3 MIDI Ins and Outs... Display-

connection, connector for sd-card reader and some more pins for others.... contact me! :)
 

oson00

Inspired
I build the JORDI board for my Axe-FX III to MFC translator. I designed the JORDI board as very open MIDI-board for an Arduino Mega. So you get 3x MIDI Ins, 3x MIDI Outs (if you need), an I2C port for displays and a breakout for SD-Card readers. And some free useable pins. I wanted to connect some relais for a midi looper! The JORDI board is quiped only for two MIDI Ins and Out but it is prepared for more! :)
 

Piing

Forum Addict
Wow! How did I miss this? Thank you, thank you, thank you!!!
I am going to rescue and rewrite my old ugly code (available at my signature)
 

Lechu

New here
Do you also provide a circuit diagram in Arduino Mega? I can not find anything like this in this topic.
 

Lechu

New here
You’re welcome! I have built a midi controller with this app used it in the wild, works well so far
Or maybe you could share the Arduino circuit diagram you use? What is the LCD model display and how is everything connected?
 

Piing

Forum Addict
Do you also provide a circuit diagram in Arduino Mega? I can not find anything like this in this topic.
Connections for the Arduino Mega:

Midi Output:

- MIDI DIN socket pin 5 connected to Arduino pin 1 (TX) through a 220 ohm resistor

- MIDI DIN socket pin 4 connected to Arduino +5 pin through a 220 ohm resistor

- MIDI DIN socket pin 2 connected to ground

Instructions: https://www.arduino.cc/en/Tutorial/Midi

Switches:

Common terminal of all switches connected to ground
The 15 Switches are connected to pins n. 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50
http://www.instructables.com/id/Arduino-Button-with-no-resistor/

LEDs:

- Cathode (short leg) connected to ground
- Anode (long leg) connected through a 220 Ohm resistor to pins n. 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51
https://www.arduino.cc/en/tutorial/blink
 

tysonlt

Inspired
Yeah I didn’t really use a schematic, I just followed tutorials for each part. Thanks piing for the very helpful info above. Really you only need the midi connections and a few buttons and leds.

I have published my actual foot controller code at https://github.com/tysonlt/AxeHandle.This is the unit I have used at gigs, works well. The teensy branch is the one I’m using, I don’t think master is up to date.
 
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