Trigger wheel positioning

[David A. Cooley]

At 09:10 PM 5/5/99 +0200, you wrote:
>
>If I want the trigger wheels first pulse to occur at 60 degrees BTDC on my
>60-2 toothed crank trigger wheel, how am I supposed to line it up?
>Is it the center of the tooth that the sensor detects or is it the edge of
>it? Rising or falling? Each tooth on my wheel is approx 4 degrees wide so
>I want do this right or I will have the ignition offset by a few degrees
>:(
>
>If it matters I will probably use a design like the one Tim Drury used for
>his DDIS signal condition the sensor. And the microcontroller will sense a
>falling edge.

Best bet is mount it where it is mechanically the best location and use
software (firmware) to modify where exactly the reference pulse occurs.
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           David Cooley N5XMT           Internet: N5XMT at bellsouth.net
     Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
   Sponges grow in the ocean... Wonder how deep it would be if they didn't?!
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