Servo Magazine (October 2008)

Counting On The Tried And True Schmitt Trigger

By Margaret Toebes    View Digital Edition  

For this year's Science Olympiad competition held in my home state of North Carolina (, 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...


Read This Article!
If you’re a subscriber and your subscription includes this issue of SERVO, you can read this article in our digital edition by clicking the blue icon in the upper right corner. Use the email address associated with your subscriber services account to login.

If you're a member of our Preferred Subscriber Network, not only will the magic blue icon let you read this article, but EVERY article in EVERY issue is yours to enjoy! Over a decades worth of content is stored in our digital archive!

If you’re not a subscriber, you can still view a few sample pages of our digital edition or subscribe here for full digital access and/or print delivery. Also, as you browse around our site, you will find selected articles have been posted in their entirety for you to enjoy.

Article Comments