[quote="jon@work"]
Originally Posted by the original
Stu - did you look at the link I attached - one of the guys on there had the same problem - he put a 5k resistor between the zener output and earth and his rev counter then worked fine (page 1 - Jed - launch link - then download piccy)
Jon for some bizarre reason i thought i would first try a link
straight to ground, when i put it to ground there was a big spark and it killed the revcounter completely
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