Timer not working

John A B

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Well I did this just as the print says I think. Anyway I have checked and re checked and can not see anything wrong. When I put the switch to work led #2 it stayes on for about 45 sec and led #1 is on for 10 sec. Now when I switch to the 5V reed relay it stays on for ever and led#1 does to. What could be wrong?





 
 

Tinhorn

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Hi John,

you must be very close for the LED's to work properly.  Double check the diode around the Relay Coil (and the wirees around that switch) is all I can think of right now but if you hve a scanner,  scan the top and bottom of the board and email the photo's to me, maybe I will see something.....

Just curious what values are VR1 & C2 ?

PassThru, you could do that to, I never thought of that before now

I guarantee teh circuit works tho,  I've built at least 2 dozen by now.....
 

GeorgiaHunter

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John,  The problem sounds to be with the wiring of the switch. According to the diagram LED2 should only light in the test position
 
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