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=][/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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