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???
04/06/06 17:39
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#113749 - wondering ..
Responding to: ???'s previous message
Im usually the one here asking for help, but couldnt he just set up a code for a timer to start as it hits the first sensor and a stop when it hits the second? So lets say hes using a 4MHZ crystal, it would be 1 over 4MHZ which is 2E-7, multiply that by 12 (instructions), so that would mean that the microcontroller runs at 3 microseconds per instruction. Then write down the hex that he got from the timer (TH and TL) and Multiply that by 3 micro seconds, that would give you the exact time between both sensor breaks then convert that to MPH somehow ...

Maybe im just blabbing ... lol, but i thought that would work

Goodluck

List of 10 messages in thread
TopicAuthorDate
measure time with photo sensor            01/01/70 00:00      
   Time measurement using optical sensor            01/01/70 00:00      
      and            01/01/70 00:00      
      wondering ..            01/01/70 00:00      
   There's no such thing!            01/01/70 00:00      
      and it is harmful            01/01/70 00:00      
   show what you have done so far            01/01/70 00:00      
   How do you sense back bumper impulse?            01/01/70 00:00      
   Sensor            01/01/70 00:00      
   more and more cars have black (plastic?)            01/01/70 00:00      

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