different way of measuring rpm

[brandonb]

i did this project a while back, this is a universal tach for gasoline engines, the responce and accuracy is very good, you can set it for cam or crank, then type in how many teeth are on the tone wheel, then it will give back rpm based on time it took to count the teeth +1 that was input in menu, the update rate is determined by engine speed not a predetermined time, in this way the update rate is a variable of engine rotation http://www.youtube.com/watch?v=BAEJS0CZ ... Wg&index=3 here is flowchart

nerdz univeral tach.fcf

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[Enamul]

Nice work Brandonb

[medelec35]

Just watched the youtube video. your hardware works great!

Good job, and thanks for sharing.

Martin