I'm not sure what you mean by "analog" here... in order to send the midi messages you need some sort of digital platform. Arduino is both cheap and easy to source.Great projects, dudes
Question though: you've been using these arduino boards. Is it possible to just build something simpler and just analog that would work?
I don't think so. In order to communicate with the Axe-FX and exchange this amount of information you need a programmable controller like an Arduino, Raspberry Pi etc. The only external analog signals that you can send to the AXE-FX are the foot pedals. Fractal have done a great job of allowing you to assign them to a lot of different parameters but not all of them (like Amp tone controls).Great projects, dudes
Question though: you've been using these arduino boards. Is it possible to just build something simpler and just analog that would work?
Hi Piing - just downloaded your sketch. Would I be correct in thinking this is only set up for 2 encoders vs the 10 shown in your early photo.?
does your controller "that stays in sync" have the same audio facets and dropping and wobble like AxeEdit?
Thanks thought I'd just check incase you'd somehow come up with a cunning way of running 8 encoders from just 4 I/O pins
Cool... as i make my own custom controllers, i'd be interested in any "open source" solutions and willing to help in development as well if required.
Thanks thought I'd just check incase you'd somehow come up with a cunning way of running 8 encoders from just 4 I/O pins
I am no expert and just do it as a hobby, so I can appreciate the different ways we all approach things. )
Curious. How fast is "fast enough?"
Thanks for sharing guys. Lots of great info you all provided out there. I have a Pi and Arduino Mega and have done many projects with both of these over the years. It was interesting looking at the code in this thread and comparing it to mine. This code was very easy to understand, once I figured out all the variables were global. It actually made it easy to follow.
I have never messed with Midi and while looking for optoisolators I thought... heck with this. I am going to use the USB instead. I ran into a snag where if the AX8 is not polled fast enough (it seems), it stops outbound communication until you reboot the AX8. I am able to send at will and am using rotary encoders for this. I also am using an 8-bit TFT display. The write time for the display holds things up for the polling and is part of the problem.
I was hoping maybe someone out there has already messed with the Fractal USB? I wrote some USB code for the Fender Mustang III for the pi, android, and Arduino and it was a lot of work. Hope to not have to figure all of that out again. The more it comes to hardware, interrupts and drivers, the more it gets out of my comfort zone.
I was wondering if the messages are always 64 bytes, or are they variable coming from USB? Anyone else run into choking the poor thing out? On the Fender Mustang, if you didn't poll the usb, the unit would stop working or get very very slow. I think Fractal was smart and chose to just cut off the routine to usb "out" thinking performance playing was more important. It seems very sensitive to this. I guess with the true midi ports, it doesn't matter. I am using the USB Host library and shield and used the <usbh_midi> library. I think this library waits for 64 bytes to arrive and maybe that is part of the issue.
I have USB send working on both devices but have not played with receive on the Pi yet.
This is something I plan on sharing, if I get something that works. Others might be interested in using USB and ditching the Midi cables. (maybe not
Sorry if this is confusing. I am thinking as I am typing.
#include <usbh_midi.h>
#include <usbhub.h>
USB Usb;
USBH_MIDI Midi(&Usb);
bool testComplete = false;
void setup(){
Serial.begin(115200);
if (Usb.Init() == -1) {
while (1);
}
delay( 200 );
}
void loop(){
Usb.Task();
if(Usb.getUsbTaskState() == USB_STATE_RUNNING){
if(!testComplete){
pollMIDI();
}
}
}
void pollMIDI(){
uint8_t size;
uint8_t incomingDataBuffer[4];
do {
if((size = Midi.RecvRawData(incomingDataBuffer))>0){
Serial.println("Reading packet");
uint8_t cin = incomingDataBuffer[0] & 0x0F;
if((incomingDataBuffer[0] & 0x0F) != 5){
testComplete = true;
Serial.println("ALL GOOD");
}
}
} while(size>0);
}