Escape timer with SSD countdown v2

552

07:01:16

Now with much more LED lights.
HAPPY DIWALI 

Just push the switch and the timer will start. 
The SSD will show the countdown.
When timer finishes, the LED glows.
Change the timer value by changing Resistance R

Timer value=R*1.1*(10^-3)  seconds

Here timer value (20sec) is nothing but escape time.
This type of timer is used in bomb circuits, where planter triggers the circuit and starts to run. He has just 20sec to flee away. This time is called escape time. 

published 10 years ago

djuz

10 years ago

Super

Oicub

8 years ago

Nice!

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