Audio 13-Way Switcher for 8 MIDI Control Changes

Switcher for 8 MIDI Control Changes

A MIDI device (VoodooLab's GCX Audio Switcher) that can be controlled via 8 midi CC messages (controllers #80-#87 or #104-#111), where a data value of 0 is off, and 127 is on (like most effects units control the on-off status of several effects). The device listens to channel 16.

The MIDI Channel can be selected with a 4-way DIP switch. The device stores different sets of those 8 controllers along with their corresponding values (0/127) so you can use them as presets, 
that would respond to your foot-controllers messages.

 

 

 

	SWITCHERx8CC  ITEM#: SWMIDI8CC PRICE:  €35.00

 

 

 

The Switcher for 8 MIDI Control Change utilizes:

• A Miduino kit including a suitable pre-programmed Atmega168,
• A 2.1mm power socket, and associated LED, 
• A 4-way DIP switch, which selects the MIDI channel, shown in table 1
• A MIDI 5-pin DIN input socket,
• A MIDI 5-pin DIN output socket,
• A MIDI activity associated LED,
• 13 off 0.1" pin-terminal switch inputs,
• The circuit schematic is available,
• The switches schematic is available,

 

 

  

  

The Switcher for 8 MIDI Control Change requires:

• A 9 Volt battery or equivalent 9 Volt DC power source
• 13 momentary action switches or footswitches

 

Circuit Schematic:

A circuit schematic of the Switcher for 8 MIDI Control Change shows the Input Switch connections. Also a detailed switches schematic is also available.

 

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.

 

Expansion:

The 16-Way drum inputs to MIDI Output units can be combined/expanded by connecting the MIDI OUT of one unit to the MIDI IN of the following unit.

 

Download:

Open the  source code file and copy and paste it into the Arduino programme and save it as a .PDE file.