Servo Magazine ( October 2008 )
Counting On The Tried And True Schmitt Trigger
By Margaret Toebes View In Digital Edition
For this year's Science Olympiad competition held in my home state of North Carolina ([url=http://www.sciencenc.com]http://www.sciencenc.com[/url]), my team was challenged to build an electric vehicle that would go a given distance and then stop. Our first car used a 555 timer circuit, but it did not give u s the accuracy we wanted. To be effective in the state competition, we needed a much better way to actually measure the distance the car went. Since we had built the car using the Vex Robotics kit from Innovation First...
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