Build your own MIDI circuits
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MIDI & Music
MIDI and Music Information
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MIDI DESIGNS
 

MIDUINO 

The MIDUINO is a combination of MIDI (Musical Instrument Digital Interface) and the Arduino, which is based around the ATmega168 microcontroller. The Miduino is a breadboardable Arduino clone, and it comes with an ATMega168 pre-loaded with bootloader.

 

The board is designed with a built in Opto-coupler and 4-way DIP switch which allows MIDI IN and easy setting of MIDI channels (1-16) if required. MIDI out is also available.

 

 

PCB_DIP_SW.jpg (98944 bytes) MIDUINO 

ITEM#: MIDUINO

PRICE:  €35.00


 

 
   

 

Circuit Schematic:

A circuit schematic of the Miduino shows the Input/Output connections. The Miduino is designed to connect to external breadboards or matrix boards on a 0.1" grid.

This clone acts just like an Arduino,  it is programmed with the Arduino bootloader, so it can talk to the Arduino software and run sketches just like the original.  

   

Assembly:

The kit includes all parts necessary, the assembly is straightforward and well documented. This design does not include a USB chip, it is designed to use a FTDI USB 232-TTL cable to program the microcontroller.  However since the cable plugs directly into the Miduino, you can use one cable for multiple Miduinos.

   

MIDI Wiring:

The MIDI IN and OUT connections use 5-Pin 180 degree DIN sockets. Note that the MIDI IN/OUT wiring is polarised and the correct pins should be used.

  

Programming:

Note, because the MIDI IN Opto-coupler shares the same serial input as the USB interface, when programming the Miduino the MIDI IN connection has to be disconnected.

  

    

Miduino Specifications:

  • Designed , to plug into a breadboard, connect to external 0.1"  matrix boards or connect via female connectors for easy prototyping
  • Size, only 4" x 1.5" (100mm x 40mm)
  • Pins brought out are, Digital 0 thru 13, Analog 0 thru 5, ARef, 5V, Ground
  • Chip comes preprogrammed with a "no-wait" Arduino bootloader
  • 2 red LEDs, power and "pin 13" just like the Arduino Diecimila
  • Available as a low cost kit with standard parts,
  • All through-hole parts are easy to solder
  • ATmega168, utilizing a 16.00 MHz crystal,  like the Arduino Diecimila
  • Standard 2.1mm DC jack (just like the original) with 5V regulator to run on 7V-17V power
  • 1N4001 diode protects against using incorrect wall adapter
  • 2-pin header for MIDI IN
  • 2-pin header for MIDI OUT
  • 6-pin header at the end for a USB-TTL cable
  • Auto-reset capability when used with a USB-TTL cable

 


There are some differences between the Miduino and the Arduino. Shields cannot be used as the form factor is different

There are also no rx/tx LEDs and no rx/tx 1K series resistors.

 

 


Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux).