Questions tagged [midi]

Musical Instrument Digital Interface.

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MIDI Keyboard using Arduino [closed]

So i have this midi keyboard which is so old the components on its board have pretty much deteriorated and i decided to replace the entire thing with an arduino instead of trying to fix it. I know its ...
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1answer
45 views

Arduino Zero not recognised as MIDI device via native USB port

I'm currently trying to get an Arduino Zero to show up as a native USB MIDI device in my DAW (ableton). No matter what I try, I cannot get it to show up as a device in Ableton. I have previously used ...
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1answer
71 views

Question regarding using Arduino and MIDI

I'm using an Arduino Leonardo for sending MIDI In and Out messages to Ableton Live. Components include a Potentiometer, a Capacitive Touch Sensor, and a DC Motor, which I'm powering with a L298N Motor ...
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35 views

Question about MIDI library

I'm trying to replace this code with something that uses the Arduino MIDI library: #include <SoftwareSerial.h> #define rxPin 2 #define txPin 1 SoftwareSerial midiSerial (rxPin,txPin); void ...
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2answers
73 views

Assistance with PID DC Motor Acceleration

I'm working on a project that uses an Arduino UNO and a motorized fader to send and receive MIDI data from my computer/musical keyboard. I'm trying to set up my motor with PID to control the position ...
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40 views

Motor response is lagging

I've got a DC motor connected to an Arduino Nano, L298N H-Bridge and a 12v Power supply. I'm trying to make it respond to incoming MIDI data a bit quicker. Right now, it seems awfully slow, and lags ...
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0answers
340 views

How to get the esp32s2 recognized as USB device?

I have an esp32-S2 saola and I am trying to use it as a MIDI usb device. I am trying to use this github repository: https://github.com/chegewara/EspTinyUSB. I am able to run the code on the esp32s2 ...
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1answer
627 views

ESP32 USB HID/MIDI library (not the BLE one)

I couldn't find any library to use an "old" ESP32 (not the new ESP32-S2) as an HID connected physicaly to the Usb port (not over BLE pairing) to send keystrokes to the PC ... Is there any solution? ...
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1answer
64 views

how to convert the following code into one using direct port manipulation

Following is the program for scanning a keyboard for MIDI transfer. At present the code works fine, but it could be faster. I need to know how to use direct port manipulation inside the for loop. ...
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1answer
70 views

Teensy 2.0 MIDI: Number of notes in a chord limited to 6?

I am using the Teensy 2.0 with USBMidi in a project that allows musicians to use retro computers as "instruments" (https://github.com/fredlcore/midijoy). So far, all these computers had no more than ...
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1answer
102 views

C3 not declared in this scope when running MIDI example code

I'm trying to run the MIDI example from Arduino.CC in Arduino Studio. I am using an Arduino Leonardo, which has USB HID capabilities. I have installed the library as mentioned: When I press the ...
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1answer
303 views

How to debug MIDI input?

I'm trying to receive MIDI messages on a Leonardo. To do that I used the circuit in the diagram below (only the top half for receiving). The only thing I did differently was using an 1N4148 diode ...
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1answer
452 views

Sending MIDI CC to multiple midi Channel

Hi so i would like to send CC messages to different MIDI Channel (volume control). The CC messages are coming from one knob. The solution i found kind of work but i'm pretty sure is not ideal and ...
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2answers
150 views

MIDI Keyboard control

I am relatively new to Arduino and I am looking to implement a simple system that uses a MIDI keyboard to (i) detect key presses (via MIDI messages) from the keyboard (ii) store the information of ...
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1answer
111 views

PC not recognizing Arduino when working with a class and MIDIUSB library

I've recently bought an Arduo Due to create some sort of a Midi controller together with the MIDIUSB library. I have create a simple a test program with 1 potentiometer (without the use of a class) ...
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1answer
100 views

Dotstar strip goes nuts when connected to MIDI piano

I've got a Dotstar strip, a piano, and an UNO(w a usb host shield). I can get and properly translate data from the piano to the UNO, so I'm definitely getting the right information to the board. When ...
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1answer
166 views

Using the MIDI library in my own library

Error message : "error: invalid declarator before 'MIDI' MIDI_CREATE_INSTANCE(HardwareSerial, Serial1, MIDI); ^ Plusieurs bibliothèque ...
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0answers
255 views

How to read from multiple multiplexers (CD74HC4067) with a library

I need to read alot of buttons and analog inputs for my project (60 buttons 15 faders) and there fore need to use multiplexers. But most mux libraries seems to only support one mux, am i wrong?
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1answer
185 views

Does DmxSerial stops interrupts?

I am trying to build a setup with an Arduino Mega, having a DMX output (using DMXSimple library), and a MIDI library (to be done). I was wondering, if I get into problems. According to This question, ...
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1answer
1k views

How do I send MIDI properly with ESP8266?

So, I've finally able to send and receive MIDI using Arduino. My next thing to do was sending 5 pin MIDI to rtpMIDI, and vice versa, using ESP8266, but so far I can't even send MIDI correctly. So ...
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0answers
165 views

Problem Writing/Reading EEPROM on MEGA

I want to make a program that writes on the EEPROM some structs, the final device will take structs of RGB LED data: typedef struct{ unsigned char r; unsigned char g; unsigned char b; } ...
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2answers
113 views

How to get more than the 16 Analog INs on a Arduino Mega for using like 24 piezo sensors

i bought an Arduino Mega2560 and flashed it with usbmidi. So now it comes up as a midi device. I need more than those 16 analog ins to be able to put all my 24 piezo sensors into it to receive midi ...
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1answer
503 views

How to upload and store settings/variables from computer on the arduino? [closed]

I'm literally as green of a noob as I can be at this moment. Been watching a ton of tuts as I plan my project, but can't seem to find anything about settings being uploaded from an external source, ...
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1answer
884 views

MIDI keyboard controlled LED strip

My objective is to light a led on a strip corresponding to a keyboard note. I have Arduino Uno with MIDI in module hooked up to a serial port. Piano is hooked with a standart midi cable, Led Strip is ...
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1answer
2k views

exit status 1 - expected primary-expression before '(' token

When I try to compile the following sketch, the compiler returns the error "exit status 1 - expected primary-expression before '(' token", and highlights "midi();" in my code. Here is my sketch: #...
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1answer
530 views

Arduino Nano Midi to cv convertor interesting issue

I created the circuit in this schematic on protoboard, and the code, https://github.com/elkayem/midi2cv I use a dual opamp and a single dac, because i only need note and velocity. The opto i use is, ...
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1answer
116 views

State change detection with a colour sensor

I have added static variables to this code and instead of getting repeated notes whilst dwelling on green, I get a single note instead. This is what I wanted. However, my loop isn't allowing for a new ...
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3answers
3k views

How do I properly receive MIDI with Arduino, with 6n138?

UPDATE : I still can't receive MIDI as of 2019/07/01. Here goes so far : I'm trying to follow this schematics from instructables, using 6N138. To make it easier, I'm going to copy his schematics. =...
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1answer
603 views

Midi controlled LED by USB [closed]

I am trying to create something that will allow me to control an individually adressable LED strip using an electric piano using its midi output. Some things to note: The piano can output midi ...
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2answers
720 views

Using Teensy 3.5 (Arduino) to produce USB and Hardware MIDI messages simultaneously. Help?

Currently trying to get a teensy 3.5 to spam a series of notes in a loop over USB and hardware serial, which I am pretty sure it can do. I have a MIDI circuit set up as per the specifications here: ...
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1answer
367 views

Arduino Mega Pins for SoftwareSerial (vs. AltSoftSerial)

I am currently looking at using an Arduino Mega to build a MIDI Receive box that will then pump the data over USB, but am having design issues/uncertainties with the Arduino's receiving end. I am ...
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2answers
640 views

Writing "theremin" outputs to a MIDI file on an SD card

I am making a musical instrument (theremin simulator). I want there to be a "record" capability which stores the volume and note the user is playing, into a MIDI file. Note this doesn't actually ...
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2answers
178 views

Is an atmega 2560 board compatible with the Adafruit Trellis?

I want to build a custom midi controller for my computer, and yes, Adafruit has a mini Untz project. For my purposes, I need more analog inputs than the Leonardo, and the only other option I can find ...
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1answer
208 views

How to control a DSP-G1 programmatically/electronically?

I want to generate music/sounds for a video game I am making with my son (using an Arduino Mega and a 240x320 LCD graphical display). I have a basic understanding of the MIDI protocol. I've been a ...
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1answer
317 views

Unexpected value change of 2nd Potentiometer

I'm trying to connect 2 potentiometer (10k) and pass their value to Hairless Midi software (For Serial to Midi Bridge) the first pot is working fine but the second pot's value keep on changing and ...
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1answer
717 views

ATtiny85 MIDI IN with less than 3V -can it be done? [closed]

I've been trying to add a MIDI INput to an ATtiny-based synthesizer, powered by a CR2032 battery (3v) and running softwareSerial. Currently I'm using an H11L1 optocoupler, which works fine at 5v, but ...
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1answer
1k views

ATtiny85 MIDI IN using SoftwareSerial - Is it possible?

I'm trying to read MIDI notes using an ATtiny85 via SoftwareSerial; so far, I've got no success at all. The ATtiny is using the internal clock, 8Mhz, 5V. The MIDI keyboard sends clean note on/off ...
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1answer
199 views

Atmega328p screen + midi, possible?

I'm trying to build this Midi2CV (control voltage for analog synths) using a Arduino Nano: https://photos.app.goo.gl/3IhhFL3PrLELLODB3 I was hoping to use this Nokia screen too for settings and ...
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2answers
535 views

Building mocoLUFA under OSX & Linux

I am attempting to build mocoLUFA under OS X el Capitan 10.11.6. [Editor: mocoLUFA (MIDI firmware for Arduino Uno)] I am using the specified LUFA version (LUFA101122) and I have tried building with ...
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2answers
200 views

Midi Timecode Fails to Send

I have an ATMEGA 2560 platform running HIDUINO and a sketch based on the stock MIDI library. I'm intending to use it to convert Linear Timecode (LTC) to MTC. Got a long way through the project - LTC ...
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2answers
54 views

Midi Program not sending notes

I'm working on a midi device with a pro micro, it's reading as a midi device, but not outputting any notes, here's my program: const int button1 = 2; const int button2 = 3; const int ...
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1answer
812 views

How to store/get MIDI SystemExclusive data?

In the MIDI library from the Arduino (FourtySeven MIDI library), there exist a function to get the length and bytes of a System Exclusive message: Functions getSysExArray() template<class ...
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1answer
576 views

MIDIUSB - Why is the command put twice?

Consider this function: void noteOn(uint8_t pitch) { midiEventPacket_t noteOn = {0x09, 0x90 | 9, pitch, 127}; MidiUSB.sendMIDI(noteOn); } midiEventPacket_t is defined as: typedef struct { ...
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1answer
569 views

MIDI output circuit behaving incorrectly when not connecting with USB

I recreated this circuit to send MIDI notes to my MIDI-USB adapter to my computer. It works fine when the Arduino is powered via USB. When I power the Arduino Nano with 9v on Vin however, the output ...
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1answer
128 views

Which connection should I use (preferably wireless)?

For a (for now MIDI only) project I was planning to use multiple Arduinos and send messages around. However, for the latency, I can have max 10ms (to prevent audible delay). I hoped to use WIFI ...
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1answer
3k views

SoftwareSerial too slow for MIDI?

I tried to use the SoftwareSerial library for MIDI (by 47 effects), but it seems I get regularly corrupted/unexpected messages. The circuit I'm using works perfectly when I connect it with the ...
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1answer
555 views

Using a MIDI connector both as MIDI In and Out (not simultaneously)

I asked this question also in Electrical Engineering (stack exchange), however on question is more appropriate on this board (question 5). For completeness, I kept all questions intact, but made ...
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2answers
1k views

Arduino Uno: Receive MIDI data from DAW

I basically want to have my Arduino accept MIDI data from my digital audio workstation, my choice is Ableton Live. I would then like it to check the received data and change the state of a digital pin ...
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1answer
28 views

How to logically tell than an UNO is being, or about to be programmed

I have an MIDI application that uses the RX and TX serial interface. When I program the UNO there is a collision between the on board programmer and the MIDI application RX serial port. The MIDI ...
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0answers
231 views

How to pass input from a Midi controller to a function?

I am trying to pass the input[], data1(pitch) from a Midi controller to the waitForButton function. When a key is pressed it sends data1(pitch) into the array input[], and when the key is up the array ...