SCENARIO: Competitive tractor pulling weight sled. Said tractor has a RPM limit in certain classes. Need an inductive unit (attached to spark wire... CLAMP OR WINDING) that can be easily put on/taken off from competitor to competitor. Would need a wireless output to a light at the end of the pulling track that would signal to competitor and officials if it was over RPM for their respective pull... Would really only need a red light if over RPM, however if we could get a green light to illuminate in a steady state until/if RPM setting threshold has passed, then at that time is turned red. Is this something even possible? Attached picture not to scale... Meant to help explain the situation. Thanks!
You need an RPM checking device. You specify a way to do it. Ok. What about being open for sollutions already in use?
Hi,
Welcome to the forum.
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http://forum.arduino.cc/index.php/topic,148850.0.html .
Op's pics.
Tom.. 