Well, all I know is that I would use 555 timer IC's and the rest is a mystery....
It's a count down timer for small boat racing that operates like this...
Need three, 1 second pulses at initial start (@ 3 minutes)
Two, 1 second pulses one minute later (@ 2 minutes)
One, 1 second pulse one minute later (@ 1 minute)
Three, half second pulses 30 seconds later (@ 30 seconds)
Two, half second pulses 10 seconds later. (@ 20 seconds)
One, half second pulse 10 seconds later (@ 10 seconds)
Four 1/4 second pulses every one second, 5 seconds later (@ 5 seconds)
One one second pulse at -0- seconds.
Anybody...
It's a count down timer for small boat racing that operates like this...
Need three, 1 second pulses at initial start (@ 3 minutes)
Two, 1 second pulses one minute later (@ 2 minutes)
One, 1 second pulse one minute later (@ 1 minute)
Three, half second pulses 30 seconds later (@ 30 seconds)
Two, half second pulses 10 seconds later. (@ 20 seconds)
One, half second pulse 10 seconds later (@ 10 seconds)
Four 1/4 second pulses every one second, 5 seconds later (@ 5 seconds)
One one second pulse at -0- seconds.
Anybody...
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