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Changes between Version 2 and Version 3 of WikiStart

03/18/11 17:01:05 (9 years ago)



  • WikiStart

    v2 v3  
    33The Flip Side Dio project is a DIY project for people that want to make a simple lap counter.  In the past people would use the parallel port to build simple lap counters with cheap hardware but modern computers no longer have a parallel port.  For our project we will use the [http://www.arduino.cc/ Arduino Uno hardware] to build a basic lap counter.  This hardware is very popular and well supported by the community.  The [http://www.flipsideracing.org/ Flip Side Racing Software] has built in support for the Dio hardware.   
    44An Arduino sketch is provided that can be uploaded to the Arduino Uno.   
     6= Hardware = 
     8For our project we will use the Arduino Uno board as our platform.  The Arduino sketch provided will detect any time one of the digital pins changes it state. If it goes from High to Low or Low to High it will transmit that pin number back to the computer so the Flip Side Racing software can detect laps.  The pins are tied to an internal 20K ohm pull-up resistor so to detect changes your sensor or switch will need to be tied to the ground pin of the Arduino.  The Arduino sketch looks for changes on digital pins 2 through 10.   
     10Here is an example board layout that will detect when switches are pressed.  Click on the image to see a larger version. 
     12[[Image(//images/schematics/fsdio-example-board.png, 25%, title=5 volt USB to TTL adapter)]]  
     14Here is the related schematic of the above board layout. 
     16[[Image(//images/schematics/fsdio-example-schematic.png, 25%, title=5 volt USB to TTL adapter)]]  
    618= Help the project =