The BIG Arduino MIDI controller thread
The BIG Arduino MIDI controller thread Posted on: 14.12.2010 by Arcelia Siebeneck Seen a lot of people on here talking about setting up a midi controller based on Arduino recently so thought it might be an idea to get all the relevant information collected into one thread.Here's some useful links:
This is the Arduino basic tutorial on how to get midi up and running: http://arduino.cc/en/Tutorial/Midi
This is some Arduino code that will get 8 potentiometers working:
http://little-scale.blogspot.com/200...i-cc-data.html video of it in action: http://www.youtube.com/watch?v=X7wJDpk_yoA
This is a thread with Arduino code to get 6 potentiometers working: http://www.arduino.cc/cgi-bin/yabb2/...num=1165833586
Here is someone who built a basic Traktor arcade controller using Arduino (includes code): http://www.arduino.cc/cgi-bin/yabb2/...num=1282913420
Arduino midi over usb: http://shiftmore.blogspot.com/2010/0...-over-usb.html
Quite an insightful thread on getting a midi controller working and discussion of analogue multiplexers: http://www.arduino.cc/cgi-bin/yabb2/...num=1264607305
48 analog inputs/digital inputs/digital outputs (in combination): http://mayhewlabs.com/arduino-mux-shield
| |
| Magan Eagleman 06.04.2011 | Hey Guys, i |
| Willia Subotic 06.03.2011 | I am using a arduino mega and making a custom MIDI fighter as a prototype for my own all in one controller Just doing it as an exercise to see whether I can do it. I am making a controller featuring full LED feedback on 16 fully lit arcade buttons, 4 LED encoder and 2 super FX faders. Should have it finished in time for late April |
| Arcelia Siebeneck 06.03.2011 | This is quite handy: http://arduinodrums.blogspot.com/201...d74hc4067.html Basically you buy an Arduino and one of these: http://www.sparkfun.com/products/9056 ($4.95) and you instantly get 16 analogue pots. The good thing about this mux pcb is that its really cheap and you can use multiple mux's... 64 pots should be feasible, if you're using an Arduino Mega, for less than |
| Maryanne Weatherill 06.03.2011 | Just book marked this Hope i get time during the week to go through it. Thanks MiLO for starting this. |
| Arcelia Siebeneck 06.03.2011 | 32 analogue pots via midi using multiplexers: [ame="http://www.flickr.com/photos/captaincredible/3359088943/in/photostream/"]Arduino based 32 pot midi controller | Flickr - Photo Sharing!@@AMEPARAM@@http://farm4.static.flickr.com/3418/3359088943_c4b24d6a7d_m.jpg@@AMEPARAM@@3359088943@ @AMEPARAM@@c4b24d6a7d[/ame] |
| Arcelia Siebeneck 16.02.2011 | Arduino arrived today... got it hooked up and finally working (pain in the arse trying to get the drivers working in Win7 x64) I loaded my first bit of code on to it just now and it's all working nicely Just spent the last 20 minutes ordering a whole bunch of extra components so I can do some basic stuff with it, including: NEW HELPING HAND TOOL SOLDER MODELING KIT MAGNIFYING KINGBRIGHT 0.56" 7 SEGMENT LED DISPLAY HE RED (CA) 10 WAY SINGLE ROW PCB PIN HEADER CONNECTOR (10 PACK) 6 WAY DOUBLE ROW PCB PIN HEADER CONNECTOR (15 PACK) (Pack of 25) Small Tactile PCB Switch / Button 6x6x4mm 840 Pin Breadboard 66mm x 174mm & 140 Jumper Wire Kit Solderless Breadboard Jumper Cable Wire Kit 2 bundles plus some encoders, more potentiometers and some ribbon cable/wiring... hopefully should have something semi-usable in the next week or so! |
| Louisa Oberc 11.02.2011 | I was believeing of using the short travel clicky style that is used on the ddm4000... If there is room for them, I will certainly add as many as I can though.... |
| Lewis Stumpf 11.02.2011 | Arcade buttons are all about the feel and ease of pressing the button. I believe Ean stated in an interview some while back that he actually starting having wrist problems due to playing bad buttons. When you're heavily hitting the buttons, or quickly, whatever, it's nice to have some big, soft fluffy buttons to press, rather than some small rubbery ones. |
| Louisa Oberc 10.02.2011 | Ean's stuff always impresses me, however I don't really see what the arcade style buttons did for his performance... Anyone with sufficient skill (sooooo not me...) should be able to perform pretty much the same with similar (but cheaper) buttons... as long as the button is reliable.. Unless you can find me a place to buy arcade buttons for about a buck each that is... |
| Arcelia Siebeneck 10.02.2011 | check any of Ean's videos to see what you can do with arcade buttons, performance-wise. http://www.youtube.com/watch?v=m8eB83axVvw my perfect controller would be the concept I'm designing at the moment (check my sig - the cdj2000 link) |
| Louisa Oberc 10.02.2011 | Ahhh.... good point sir! Although I tend to adjust the auto-gain myself since I don't find it works all that well, I can understand that there would be many people who don't... I'll make the 4 channel gains endless encoders... What's the deal with arcade buttons? It seems as if everyone is all gaga over them, but is it just the size/feel? or are they somehow more accurate than normal buttons? My issue is that they're HUUUGE.... I would sacrifice quite a bit of real estate to fit them... however after I get the required stuff (global/fx/loop/channel/etc) nailed down, I'll see how much space I have left over.. Re: selling it... I probably wouldn't sell the first one I build, but I am toying with a custom controller building service... tell me what you want, and i will build it for you... It would be more expensive than just a controller, but the end result is 100% custom for your needs. What would be your 100% MUST HAVE feature that is not always included on a controller? (i.e., such-and-such controller would be PERFECT, if only it had a.............) |
| Arcelia Siebeneck 10.02.2011 | are you believeing of selling it once its completed? Depending on the finish/quality, anything between $500-800? I'd probably want a bunch of arcade buttons on there first! the reason I would consider using encoders as gain controls is because Traktor autogains each track when it loads. This means that you would need to use soft takeover on any potentiometer as the knob would always be in the wrong position when loading new tracks. An encoder solves this problem perfectly. |
| Louisa Oberc 09.02.2011 | I haven't, no... I am now though... My goal is to have at least 2-4 encoders per channel plus 4 or 8 for personal choice... Are endless encoders really that useful for gain? I find my self barely touching it, and when I do, it's rarely more than a few degrees of motion... Anything you would change? Placement, distances, sizes (5mm small/12mm large buttons, 10mm knobs), etc? Also, what would one pay for such a device? assuming I end up completing it |
| Arcelia Siebeneck 09.02.2011 | very nice design! have you thought about using encoders for the gain controls? (like the S4) |
| Louisa Oberc 09.02.2011 |
Originally Posted by safefire
Unless you are referring to more detailed information such as force required to push/turn, etc...
Originally Posted by safefire
Originally Posted by safefire
The 4051's are their analog counterparts. Hook 8 (or more) analog sources to the inputs, and then one by one you go through the inputs and read them. Internally, the chip will switch each input to a common output (which is connected to an analog input on the arduino). Then its just a simple analogRead() to grab the value. It sounds a little complicated, but once you've played with them (they are cheaper than dirt, pick some up!) and seen how the code works it becomes second nature... The fun part comes when you daisy chain them together My final controller will likely use an even bigger IC that has 32 inputs, so 4 for pots and faders, 6-8 for buttons and i'll be set let's just say that using 10 (5 each) of the larger ic's you could have 160 buttons and 160 pots/faders using only 9 digital inputs and 5 analog inputs: 5 digital, 5 analog for the pots and 4 digital for the buttons (iirc). The problem then moves into the software, in that the more time spent reading inputs, the less time available to send midi, so you will encounter latency... I have no clue when that will become a factor (as in how many inputs), but with my current prototype it reads all the inputs (about 27) 50,000 times per second... I have a feeling I have a little headroom before I have to worry I would like to find some sort of information as to how many messages per second is required for "zero latency"...
Originally Posted by safefire
Here's a quick writeup I did a while back: http://arduino.cc/community /index.php/topic,5650.0.html
Originally Posted by safefire
I invite criticism and suggestions to the layout, it's a fluid work in process so any input is always appreciated btw, it is currently 18" x 13" (and I have already decided to move the xfader down a half inch or so) |
| Lewis Stumpf 09.02.2011 | I know what you mean about the quality of the analog parts. What I meant was more that, with manufacturers like ALPS, most of their datasheets are so groggy and incomplete that I have a hard time believing the quality of their mechanical parts. RS-Components sell ALPS parts and a few Bourns as well. They sell in mostly reasonable quantities (1-10+), and ship at reasonable rates. Oh well. your 40XXN chips, are those just generic ADCs or? What are your experiences with these? As well, since you're drawing up things in eagle, I assume you've put some work into designing the PCBs as well? Your workflow looks very similar to mine, too. I'm quite well versed in drawing up schematics and plans for controllers, cases and parts, if you'd like some help getting things laid out nice and tidy, give me a shout Keep up the good work |
| Louisa Oberc 08.02.2011 |
Originally Posted by Archies'bald
Originally Posted by safefire
I am not too sure how much 'quality' is required when we're dealing with digital electronics... as long as it has a smooth taper, the rest is up to the software... that being said, physical construction (metal, not plastic crappyness) is always important. If you wanted to use the pots to build a true analog mixer, then yeah... quality all the way since sound is going through them... for us, we're sending 1's and 0's, the arduino reads a pot and gives back a value from 0-1023, nothing more, nothing less... if anything I would say the adc (analog-digital converter) of the atmega chip (or whatever processor is being used) is more important, the higher precision, the better (atmega's use 10bit, others use 12bit or more).. Gotta.... Stop.... Rambling... Oh, and it's a touchpad (ripped out of a notebook), NOT a touch screen... though that would be sick |
| Lewis Stumpf 08.02.2011 | Yay, Eagle Looks like you're making good progress mate. Nice to see someone take some stuff out of their head and down on paper. I'm about hit the hay, so I'll leave the majority of my questions till the morning. One thing I'd like to know though is, which pots and faders are you using? I've been shopping around for good quality analog inputs. The only models I can find which looks relatively well made are Bourns, and those I can't buy in quantities under 120+. I'm very excited about your project. I'll have nothing short of a thousand questions ready for you tomorrow, regarding 40XXN chips, boards and that touch screen. Keep up the good work |
| Shay Wyche 08.02.2011 | Erm.... could someone pick my jaw up from the floor please? Lovely work. How long has it taken you to this point DJNecro? |
| Louisa Oberc 08.02.2011 | Here's the code: Code:
/*
TODO
Refactor input code turn everthing into functions for easier maintanance and fewer global variables
Add an initial calibration routine to prevent initial flood of midi data on startup
Rebelieve encoder code, it seems to be a little slow
Possible issue with encoder buttons
Implement messages queue'ing system to buffer messages before sending (possible resolution to encoder issue)
*/
//#include <ps2.h>
//#include <Trackpad.h>
#include <WProgram.h>
#include <Midi.h>
#define NUM_POTS 13
#define NUM_BUTTONS 16
#define BTN_DEBOUNCE 75
#define NUM_ENCODERS 2
#define SMOOTHING 3
#define POT_SELECT_PINS {2,3,4}; //A, B, C on 4051
#define POT_READ_PINS {0,1}
#define MIDI_CHANNEL 1
#define XY_SENSITIVITY 25
#define XY_CC_X 71 // xy pad X CC#
#define XY_CC_Y 70 // xy pad Y CC#
#define XY_NOTE 69 // A-4
#define XY_MIN_X 1320
#define XY_MAX_X 5480
#define XY_MIN_Y 1245
#define XY_MAX_Y 4490
#define XY_CLOCK 18 // Orange Wire
#define XY_LATCH 19 // Blue Wire
#define ENC1_A 8
#define ENC1_B 9
#define ENC2_A 8
#define ENC2_B 9
#define ENC_PORT PINB
#define ENC_MODE_REL 1
#define ENC_MODE_ABS 2
#define ENC_MODE ENC_MODE_REL
#define CW 0b01
#define CCW 0b11
#define CLOCK_4021 7
#define LATCH_4021 6
#define DATA_4021 5
#define ON 0
#define OFF 1
/* Debug Defines */
#define DEBUG_POT 1
#define DEBUG_BTN 2
#define DEBUG_PAD 4
#define DEBUG_ENC 8
#define DEBUG_ALL 15
#define DEBUG false
#define BENCH false
#define DEBUG_SEL DEBUG_POT
/* Debug Defines */
class MyMidi : public Midi {
public:
MyMidi(HardwareSerial &s) : Midi(s) {}
void handleNoteOn(unsigned int channel, unsigned int note, unsigned int velocity) {
sendNoteOn(channel, note, velocity);
}
void handleNoteOff(unsigned int channel, unsigned int note, unsigned int velocity) {
sendNoteOff(channel, note, velocity);
}
void handleControlChange(unsigned int channel, unsigned int controller, unsigned int value) {
sendControlChange(channel, controller, value);
}
};
/* returns byte: bits 1,2 are encoder 1... bits 2,3 are encoder 2... 0b11 is CCW 0b01 is CW */
byte read_two_encoders() {
int8_t enc_states[] = {0,-1,1,0,1,0,0,-1,-1,0,0,1,0,1,-1,0};
static uint8_t old_AB1, old_AB2 = 0;
byte rtn = 0;
old_AB1 <<= 2; //remember previous state
old_AB1 |= (ENC_PORT & 0b11); //add current state
old_AB2 <<= 2; //remember previous state
old_AB2 |= (ENC_PORT & 0b1100) >> 2; //add current state
rtn |= (enc_states[(old_AB1 & 0b1111)]) & 0b11;
return rtn | ((enc_states[(old_AB2 & 0b1111)]) & 0b11) << 2;
}
//Trackpad xyPad(XY_CLOCK, XY_LATCH);
MyMidi midi(Serial);
byte potReadPins[] = POT_READ_PINS;
byte potSelectPins[] = POT_SELECT_PINS;
byte buttons1, lastButtons = B11111111; // Default state of buttons
byte buttons2 = B11111111; // Default state of buttons
byte encValues[NUM_ENCODERS] = {1,1};
byte prevEncValues[NUM_ENCODERS] = {1,1};
byte counter = 0; // for benchmarking
boolean buttonState[NUM_BUTTONS] = {};
boolean lastButtonState[NUM_BUTTONS] = {};
int potValues[NUM_POTS] = {};
int prevPotValues[NUM_POTS] = {};
unsigned int allButtons = 0;
unsigned long lastBtn = 0; // for debouncing buttons
unsigned long current = 0; // for benchmarking
unsigned long running = 0; // for benchmarking
unsigned long benchmarks[4] = {0,0,0,0};
void setup() {
if (DEBUG||BENCH) Serial.begin(38400);
else midi.begin(0);
pinMode(LATCH_4021, OUTPUT);
pinMode(CLOCK_4021, OUTPUT);
pinMode(DATA_4021, INPUT);
pinMode(ENC1_A, INPUT);
pinMode(ENC1_B, INPUT);
pinMode(ENC2_A,INPUT);
pinMode(ENC2_B,INPUT);
for (byte i=0;i < 3;i++) pinMode(potSelectPins[i], OUTPUT);
for (byte i=0;i < NUM_POTS;i++) potValues[i] = prevPotValues[i] = 0;
for (byte i=0;i < NUM_BUTTONS;i++) buttonState[i] = lastButtonState[i] = 1;
if (DEBUG||BENCH) Serial.println("Begin");
}
void loop() {
if (BENCH) current = micros();
midi.poll();
/*--------------| BUTTONS |--------------*/
digitalWrite(LATCH_4021,1);delayMicroseconds(20);digitalWrite(LATCH_4021,0);
buttons1 = shiftIn(DATA_4021, CLOCK_4021, LSBFIRST);
buttons2 = shiftIn(DATA_4021, CLOCK_4021, LSBFIRST);
allButtons = word(buttons1, buttons2);
if ((allButtons != lastButtons) && (micros() - lastBtn > BTN_DEBOUNCE)) {
lastBtn = micros();lastButtons = allButtons;
for (byte i=0;i<NUM_BUTTONS;i++){
if (!bitRead(allButtons, i)) buttonState[i] = ON;
else buttonState[i] = OFF;
if (buttonState[i] != lastButtonState[i]) {
lastButtonState[i] = buttonState[i];
if (buttonState[i] == OFF) {
if (DEBUG && (DEBUG_SEL & DEBUG_BTN)) {Serial.print("Button ");Serial.print(i+1,DEC);Serial.println(": OFF");}
else midi.sendNoteOff(MIDI_CHANNEL, i, 0); // Stop the note
} else {
if (DEBUG && (DEBUG_SEL & DEBUG_BTN)) {Serial.print("Button ");Serial.print(i+1,DEC);Serial.println(": ON");}
else midi.sendNoteOn(MIDI_CHANNEL, i, 127); // Send the note
}
}
}
}
if (BENCH) {
benchmarks[0] += micros()-current;
current = micros();
}
/*--------------| BUTTONS |--------------*/
/*--------------| POTS |--------------*/
byte chipSelect = 0;
for(int i = 0; i < NUM_POTS; i++) {
PORTD = (NUM_POTS > 8 && i >= 8) ? (i % 8) << 2 : i << 2; // set pins 2, 3 and 4 to value between 0 (00000) and 7 (11100) to select the pot
if (i > 0 && (i % 8 == 0)) chipSelect++; // increase chip select index every 8 pots
potValues[i] = analogRead(potReadPins[chipSelect]);
if (abs(potValues[i] - prevPotValues[i]) > SMOOTHING) {
prevPotValues[i] = potValues[i];
if (!DEBUG) midi.sendControlChange(MIDI_CHANNEL, i, map(potValues[i],5,1020,0,127));
}
if (DEBUG && (DEBUG_SEL & DEBUG_POT)) {Serial.print(" P");Serial.print(i+1,DEC);Serial.print(":");Serial.print(potValues[i],DEC);}
}
if (DEBUG && (DEBUG_SEL & DEBUG_POT)) Serial.println();
if (BENCH) {
benchmarks[1] += micros()-current;
current = micros();
}
/*--------------| POTS |--------------*/
/*--------------| Encoders |--------------*/
static byte encoderCnt = 0;
byte enc1,enc2,encValue = 0;
encValue = read_two_encoders();
if(encValue && (++encoderCnt % 4) == 0) {
enc1 |= encValue & 0b11;
if (enc1 == CW) {
if (ENC_MODE & ENC_MODE_REL) {
if (DEBUG && (DEBUG_SEL & DEBUG_ENC)) Serial.println("ENC1: ->");
else midi.sendControlChange(MIDI_CHANNEL,30,1);
}
if (ENC_MODE & ENC_MODE_ABS) {
encValues[0]++;
if(encValues[0] >= 127) encValues[0] -= 127;
midi.sendControlChange(MIDI_CHANNEL,40,encValues[0]);
}
} else if (enc1 == CCW) {
if (ENC_MODE & ENC_MODE_REL) {
if (DEBUG && (DEBUG_SEL & DEBUG_ENC)) Serial.println("ENC1: <-");
else midi.sendControlChange(MIDI_CHANNEL,30,127);
}
if (ENC_MODE & ENC_MODE_ABS) {
encValues[0]--;
if(encValues[0] <= 0) encValues[0] += 127;
midi.sendControlChange(MIDI_CHANNEL,40,encValues[0]);
}
}
enc2 |= (encValue >> 2) & 0b11;
if (enc2 == CW) {
if (ENC_MODE & ENC_MODE_REL) {
if (DEBUG && (DEBUG_SEL & DEBUG_ENC)) Serial.println("ENC2: ->");
else midi.sendControlChange(MIDI_CHANNEL,31,1);
}
if (ENC_MODE & ENC_MODE_ABS) {
encValues[1]++;
if(encValues[1] >= 127) encValues[1] -= 127;
midi.sendControlChange(MIDI_CHANNEL,41,encValues[1]);
}
} else if (enc2 == CCW) {
if (ENC_MODE & ENC_MODE_REL) {
if (DEBUG && (DEBUG_SEL & DEBUG_ENC)) Serial.println("ENC2: <-");
else midi.sendControlChange(MIDI_CHANNEL,31,127);
}
if (ENC_MODE & ENC_MODE_ABS) {
encValues[1]--;
if(encValues[1] <= 0) encValues[1] += 127;
midi.sendControlChange(MIDI_CHANNEL,41,encValues[1]);
}
}
}
if (BENCH) {
benchmarks[3] += micros()-current;
current = micros();
}
/*--------------| Encoders |--------------*/
///*--------------| XY Pad |--------------*/
// packet_t * packet;
// packet = xyPad.getNewPacket();
// static boolean xyOn = false;
// if (packet->z > XY_SENSITIVITY) {
// if (!xyOn) {
// xyOn = true;
// if (DEBUG && (DEBUG_SEL & DEBUG_PAD)) Serial.println("XY Pad ON");
// else midi.sendNoteOn(MIDI_CHANNEL, XY_NOTE, 127);
// }
// if (DEBUG && (DEBUG_SEL & DEBUG_PAD)) {
// Serial.print("X: ");Serial.print(packet->x,DEC);Serial.print(" Y: ");Serial.println(packet->y,DEC);
// } else {
// midi.sendControlChange(MIDI_CHANNEL, XY_CC_X, constrain(map(packet->x, XY_MIN_X, XY_MAX_X, 0, 127), 0, 127));
// midi.sendControlChange(MIDI_CHANNEL, XY_CC_Y, constrain(map(packet->y, XY_MIN_Y, XY_MAX_Y, 0, 127), 0, 127));
// }
// } else {
// if (xyOn) {
// xyOn = false;
// if (DEBUG && (DEBUG_SEL & DEBUG_PAD)) Serial.println("XY Pad OFF");
// else midi.sendNoteOff(MIDI_CHANNEL, XY_NOTE, 0);
// }
// }
// if (BENCH) {
// benchmarks[2] += micros()-current;
// current = micros();
// }
///*--------------| X/Y Pad |--------------*/
if (BENCH) {
counter++;
if (counter >= 10) {
Serial.print("(ms) Btn: ");Serial.print(benchmarks[0]/counter,DEC);
Serial.print(" Pot: ");Serial.print(benchmarks[1]/counter,DEC);
// Serial.print(" Pad: ");Serial.print(benchmarks[2]/counter,DEC);
Serial.print(" Enc: ");Serial.println(benchmarks[3]/counter,DEC);
counter = benchmarks[0] = benchmarks[1] = benchmarks[2] = benchmarks[3] = 0;
}
}
}
|
| Louisa Oberc 08.02.2011 |
Originally Posted by MiL0
Originally Posted by MiL0
Originally Posted by MiL0
It's not what is on the breadboard right now, but it is similar.
Originally Posted by MiL0
Midi-In was another matter... there are a number of bad schematics out there, I ended up using a 4N35 optoisolator, with a 270r input resistor (for the input led) and a 1k pull-up for the transistor side. It works great... chained two three controllers together and there was ZERO latency... I'll put up a schematic for it later today.
Originally Posted by MiL0
Originally Posted by MiL0
Originally Posted by MiL0
If you have any other questions, please just ask away! Schematic: Better pic of the prototype: Wiring: Midi Out: Midi In: Guts of the prototype: Stock on the front: Almost stock on the back: Not so stock on the inside: Behringer would never do this: Closeup of DX-500-M guts: One more closeup: My custom breadboard arduino: |
| Arcelia Siebeneck 08.02.2011 | that's not hijacking - that's exactly the kind of project that should be posted in this thread!! would you be willing to share the code you used? can you give any more details about how its all wired up? looks like you've wired up some midi ports? did you create your own mux shield to get more inputs out of the arduino? how about some close up shots of the wiring? welcome to the community btw - great first post |
| Louisa Oberc 07.02.2011 | I won't hijack this thread, but I just wanted to say that I am in the process of designing my final prototype controller (having already built and tested 3 different versions of it -- pic below). I have found it to be a very very fun and educational project. I'll likely end up posting my own build log since mine is substantially larger (full 4 channel, i'm only done the basics and i'm up to 64 buttons, 16 pots and 5 faders [4x60mm, 1x100mm]), and I hate hijacking threads, nice job on yours so far though, if you need any assistance let me know L-R: Behringer DX-500-M (-M for midi ), quick transport test controller i whipped up last evening , code and electronic prototype (used to test code/schematics, and has obviously gone through changes). Here is the current state of my final prototype.. lots of room for transport/fx/global controls |
| Joan Kollmorgen 07.02.2011 | Good Idea Milo. I'm sure you will get a lot of interest. Let me know when you get that arduino delevered because I've been believeing of getting the same one myself. |
| Arcelia Siebeneck 07.02.2011 | Ordered my Arduino a week ago but still hasn't turned up lol (it's a clone from Hong Kong so delivery is slow). My ultimate aim is to get some code running that's flexible enough in terms of inputs (analogues/digital/encoders/etc) that the whole DJTT community can download it and use it without too much tweaking. I'm also considering ordering a bunch of Arduino's, pre-programming them and then re-selling on here them so anyone who's scared of programming but good at design/building can get started straight away. (I don't plan on making a profit, just a few quid to cover postage) |
| Vernie Beharry 20.01.2011 |
Here's 8 analog pots going into a standard Midifighter through a CD4051B multiplexer.
. . .I believe I just sharted in my pants a lil! What's the max of inputs that can be used? Analog? Digital? How many can I add to a MF? . . .Oh nevermind! . . I'm getting more and more excited and got more and more questions seeing this. . . . |
| robert chanda 20.01.2011 | Here's 8 analog pots going into a standard Midifighter through a CD4051B multiplexer. Better pictures in the Midifighter community . |
| Arcelia Siebeneck 20.01.2011 | ah excellent! your code will serve well as the basis for other peoples controllers (if you'd care to share it?) are the LED's going to be midi activated or activated electronically (when a button is pressed, completing a circuit) |
| Marlena Mouer 19.01.2011 |
Originally Posted by MiL0
|
| Arcelia Siebeneck 19.01.2011 | nice one! what kind of controller are you designing? how many analogues/buttons/etc? |
| Marlena Mouer 19.01.2011 | So I finally got this working in Windows XP (looks to be a workaround for OSX as well). The following steps allow you to pass midi info via USB into your apps utilizing the Roland Serial to MIDI driver. This setup negates the need for an additional app running to convert serial to midi (i was using this program) I pulled the info from here: http://www.arduino.cc/cgi-bin/yabb2/...num=1161023163 1. Uninstall your FTDI driver (look in the Arduino drivers folder for FTDIUNIN.exe and be sure to run it in Windows 2000 compatibility mode). 2. Download this and replace FTDIPORT.INF in your Arduino drivers folder 3. Plug in your Arduino and reinstall the now modified FTDI driver (direct it to your arduino drivers folder) 4. Download the Roland driver and install it. I unchecked the box that said something about "use multiple drivers" and left it set to COM 3 5. IMPORTANT!! Set your serial.baud rate in your sketch to 31250 6. Make sure your sketch is serial.printing in the appropriate MIDI format (many topics over in arduino community s) 7. Now open your app and direct it to the Roland MIDI IN |
| Arcelia Siebeneck 28.12.2010 | Arduino Mux Shield (48 analogue/digital I/O) - http://www.arduino.cc/cgi-bin/yabb2/...m=1248736243/0 |
| Vernie Beharry 22.12.2010 | Invaluable pieces of information that I could have used MONTHS ago!!! Good work Mil0! Mods. . .Can we get this Stickied? |
| Arcelia Siebeneck 20.12.2010 | nice one chrisw - i'm almost certainly gonna pick up an Arduino in the new year... gonna be quite a steep learning curve but it's worth a shot (considering the price). |
| Cammy Clegg 17.12.2010 |
Originally Posted by Archies'bald
lists all the schematics for console controllers http://slagcoin.com/joystick/pcb_wir...PCB_ATTRIBUTES also the start button and select button are analog too so 2 analog inputs? |
| Shay Wyche 17.12.2010 | That look very interesting Chris, thanks for the heads up. I'm sure a lot of people will like the look of that! |
| Cammy Clegg 17.12.2010 | milo you seen this? http://www.modk.it/ more user friendly? http://itp.nyu.edu/physcomp/Labs/MIDIOutput |
| Arcelia Siebeneck 15.12.2010 | nice one man I believe the key for most people is getting the multiplexer working with some decent code that doesn't introduce too much latency. At least 16 analogues would be nice... |
| Ami Ballow 15.12.2010 | I built a clone of a midi fighter out of an arduino and the usb to midi hack listed above. It wasn't too hard to pull off. Mine has no LEDs on it though, I ran out of digital pins and didn't want to mess with a multiplexer. I didn't believe to take pics while I was making it, but I should be able to write something up on the process if anyone is interested. The hardware side of it was pretty straightforward. Programing it wasn't too bad, but I had to refer to a lot of example code to get it right. |
| Shay Wyche 15.12.2010 |
Originally Posted by extraclassic
Me too. I'm not even a novice at programming. As I've said before, I don't believe I'm willing to learn a new language just to build a controller, it's just not time/value efficient for me. If someone was willing to help out the community , then that would be pretty awesome. |
<< Back to Reviews of DJ equipment Reply