Musical Instrument Digital Interface

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3answers
65 views

How to stretch high frequency digital signals (e.g., MIDI) into the audio range

I'm curious about the possibility of sonifying MIDI data, which has a bitrate of 31250. The range of human hearing extends to about 20kHz, which means that the fastest bits of the signal would lie ...
1
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1answer
128 views

How do I hook up an LED across the tx pin on my Atmega328?

I've built a standalone Arduino and upload sketches via this method From Arduino to a Microcontroller on a Breadboard. I would like to hook up an LED across TX like on the Arduino board, so I simply ...
1
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1answer
160 views

MIDI To Polyphonic Square Wave on Arduino

I've been struggling with this for a few days now, and I would really like to get on with my project. Unfortunately this is holding me up. What I am trying to do is retrieve MIDI signals sent over USB ...
0
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1answer
82 views

Plug-and-play usb-midi controller. How?

I am wondering how plug-and-play usb-midi controllers are created? To the moment I've created a simple midi controller based on Arduino Uno, but I am not able to use it directly. I have to use ...
11
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4answers
2k views

Make a custom plastic case

I have worked on many electronic DIY projects like MIDIbox (http://www.ucapps.de/), it always was fun and working but at the end, the problem was that I ended with a cool gear, but in a poor casing, ...
2
votes
1answer
97 views

Hardware based MIDI decoding / synthesizing

I have a lot of old MIDI equipment that was recently given to me by a retired music teacher. I have a lot of interest in it, and would like to make a MIDI synth. It does not need to be high quality or ...
1
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2answers
169 views

Serial Data Input through Microcontroller to Output Voltage

I am new here and new to programming, so I thought maybe some of you might be able to help me in the right direction. I am looking to design a circuit that receives serial data from an RS232 port on ...
-1
votes
1answer
121 views

Build output connector in old keyboard

I'm trying to recover an old keyboard (of about 25 years old). It has all circuitry gone in paradise, but it had a midi output and input line. Moreover, its keyboard mechanics and the transducer work ...
0
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1answer
206 views

Build output connector for Midi-USB converter in old keyboard

I'm trying to recover an old keyboard (of about 25 years old). It has all circuitry gone in paradise, but it had a midi output and input line. Moreover, its keyboard mechanics and the transducer work ...
5
votes
2answers
944 views

Is there any reason why using a baud rate of 31250 on an Arduino MIDI project could cause problems?

I have a 600 pulse per revolution optical encoder (and some other stuff) connected to an Arduino Uno (tried it on r2 and r3) through the interrupt pins 2 and 3. While waiting for a my MIDI jack to ...
1
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0answers
90 views

Designing a polyphonic synth

I am currently designing a synth based on various designs online and modifying them(the vco). I am not sure what I'm going to use in between the MIDI and VCO. What parts/circuits would I need to ...
3
votes
1answer
998 views

Implementing a class-compliant USB MIDI device

I'm building a device that I want to communicate with a computer using MIDI over a USB connection. There are lots of USB MIDI devices that are class-compliant and thus require no special drivers, ...
0
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1answer
151 views

How would one make a MIDI to DB25 adapter?

I have a basic GamePort/MIDI cable like this: I was wondering if it is feasible to change this from working with a GamePort interface to working with a DB25 interface?
-1
votes
1answer
151 views

mbed midi controller feasibility

I'm looking to start on my first microcontroller project-- a midi controller that (hopefully) will connect to an android device via ADK as part of a touch interface. I've never worked with this lower ...
0
votes
3answers
1k views

Arduino MIDI interface - Serial was not declared in this scope

I'm very new to arduino, I've been trying to follow this tutorial to get the arduino to interface with the Whammy pedal using a MIDI cable. I've managed to sort out the cable, solder it, and identify ...
10
votes
4answers
2k views

MIDI sequencer timing accuracy using the Arduino

I build these music sequencers. Only it's not exactly a sequencer, it's a physical interface for a sequencer. The sequencer is an application that runs on a laptop that the sequencer connects to, ...
8
votes
1answer
599 views

Arduino serial communication protocol design

I make a drum sequencer interface for electronic music. It uses an arduino mega as it's microprocessor, and currently it interfaces to a Processing program that I wrote for serial communication. ...
1
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1answer
53 views

MIDI status bytes

I have understood that this asyncronous protocol requires a status byte that always starts with a 1 to be able to tell what the start is of the next package and what to do with the data bytes. When ...
1
vote
2answers
2k views

USB-MIDI Interface with STM32F4 Discovery?

I've got an STM32F4 Discovery Board and I'd like to use/configure it as an USBMIDI device but this standard device class is not (fully) supported by the USB libraries supplied by ST. Any hint? Any ...
1
vote
1answer
144 views

Controlling electricity flow via MIDI to power lamps

I'm looking to build an interesting lighting rig comprised of lampshades for my band. Here's an image of what I want to achieve: I have Logic pro running in my Macbook pro. I want to create MIDI ...
2
votes
2answers
469 views

MIDI - clockless serial with TI MSP430 MCU software?

I'm planning to make a small MIDI transport box ( an encoder plus 6 buttons) but i don't have a lot of experience in serial communications( I have used shift registers but that's all) I would like to ...
0
votes
4answers
1k views

Converting old organ keyboard to MIDI

I have a very old keyboard, a CASIO MA-100 that I want to convert to a MIDI keyboard: Being a programmer and a digital electronics enthusiast, I know how to do it, but I could use some help to save ...
4
votes
5answers
663 views

Are these MIDI circuits equivalent?

I've been creating a MIDI Thru box project and was trying to avoid having so many resistors. Points A-G may (or may not) have a load connected to them. Are these equivalent, or do I really need to ...
4
votes
2answers
721 views

DIY MIDI knob Controller

What would it take for me to build something similar to the mockup below?
3
votes
2answers
233 views

Connector Choice for Arduino/MIDI Bridging Interface

I'm in the early stages of planning a MIDI-mapping component that I can plug into my Alesis DM-6 drum kit so I can ultimately play it through Rock Band 3. I know there are commercial options out ...
5
votes
3answers
454 views

Pressure/Force sensor

One of my students are planning to make a simple musical keyboard with PIC microcontrolers, using MIDI output. The main problem now is about the pressure/force sensor. I've found a good alternative ...