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MIDI 6-Way Pontentiometer Controller

Potentiometers to MIDI Controller Change

The 6 poteniometers are wired to the 6 analogue inputs of the Arduino board. The program is design to output 6 associated controller values. These values can be assigned in MIDI programmes e.g. Reason, Live, Sonar, Cubase etc. to control various parameters within these programmes. The MIDI output channel (1 to 16) can be selected by the 4-way DIP switch.




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PRICE:  €50.00




The MIDI  6-way Controller unit utilizes:

  • An assembled, built and tested Arduino board including a suitable pre-programmed Atmega microcontroller,
  • A 2.1mm power socket, and associated LED, 
  • A MIDI detection LED,
  • A 4-way DIP switch, which selects the MIDI channel at power-on, shown in table 1
  • A 150mm wired MIDI 5-pin DIN input socket,
  • A 150mm wired MIDI 5-pin DIN output socket, 
  • A MIDI activity LED,
  • 6 off 0.1" pin-terminal potentiometer inputs,
  • The circuit schematic is available,


The MIDI  6-way Controller unit requires:

  • A 9 Volt battery or equivalent 9 Volt DC power source
  • 6  linear 10k potentiometers





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







The 6 potentiometers are connected to the Analog inputs A0 to A5 control and are used to control the MIDI Control Change parameters CC 20 to CC25, respectively.  


NOTE: Any unused inputs need to be connected to Ground (GND) or else noise/interference is picked up on the input pin and will produce spurious MIDI outputs.


The MIDI Channel is selected by reading the DIP switch positions, as shown in the Table 1 below. 




Power Supply:

The  Arduino can be powered via the USB connection or with an external power supply. The power source is selected automatically.


External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from a battery can be inserted in the Gnd and Vin pin headers of the POWER connector. A low dropout regulator provides improved energy efficiency.


The board can operate on an external supply of 7 to 20 volts. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may be unstable. If using more than 12V, the voltage regulator may overheat and damage the board. The recommended range is 7 to 12 volts.




DIP Switch Selections



4 3 2 1
on on on on 1
on on on off 2
on  on  off on 3
on on off off 4
on off on on 5
on off on off 6
on off off on 7
on off off off 8
off on on on 9
off on on off 10
off on  off on 11
off on off off 12
off off on on 13
off off on off 14
off off off on 15
off off off off 16

Table 1 MIDI Channel