Pedal trackers - photocells boards for pedals
 Photocells boards are used to transmit information about the pushed keys to other tracker devices. Boards can be mounted on the back side of the pedal. Photocells can respond to pushing or releasing the keys, depending on the order. In both cases, the voltage output level is 5V or 0V (depending on the order).
The connector is made of pins set in two rows within distances of 2.54 mm that allow connecting it to other devices with a standard plug-in socket tightened on multi-wire strips. The board is powered through two pins. The pictures present boards for keys from c to e and from f to h. The board for the third octave is made according to the order.
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Technical data
  • voltage rating: 5V
  • supply current: 70 – 100 mA
  • output voltages: TTL levels
  • maximum output current: 5 mA
  • photocell gap width: 5 mm
  • photocell gap depth: 7.5 mm
  • dimensions: 164.2 x 35 x 15.2 mm (a whole octave, the given width does not take into account the connector, the given height takes into account elements on bottom side of the board)
  • parts height above the board: 11 mm 1mm
  • distance between photocells: 13.2 mm (compatible with standard keys width)