TRKBRD Schematic & Code

The following is full documentation and diagrams of the TRKBRD physical prototype. If you find an error, or figure out a better way, or need help… please contact me!

Final Prototype

Schematic Diagrams

Entire Electronics Schematic

Arduino Connections (zoom view)

Parent Multiplexers (zoom view)

Children Multiplexers/IR Phototransistors (zoom view)

Switches/Laser Transistors (zoom view)

Parts List

  • Arduino Duemilinova (1)
  • 4051 Multiplexer (16)
    • #73-473-70 from ELFA
  • IR Phototransistor (110)
    • #75-203-15 from ELFA
  • IR Laser (2)
    • 35mW 980 nm Infrared
    • 120 degree line generator
    • #A-H980-35-3 from Aixiz
  • Switch (2)
  • Transistor (2)


Video Documentation

    • moh mus
    • March 19th, 2010

    It’s fantastic ! ! !

    • hunix
    • September 14th, 2010

    this is amazing, i have been trying to do the same but i couldn’t manage to get more than 9 sensors to work at the same time, anyways thanks a lot for the schematics and codes, great work

  1. Excellent post however , I was wondering if you could write a litte more on this topic? I’d be very grateful if you could elaborate a little bit further. Thanks!

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