Vibration Sensor based delay circuit

Thread Starter

tommace

Joined Jan 14, 2013
4
Hi,
I need to create a delay circuit which has an LED turn off after 2 minutes. When vibration sensor vibrates LED should turn on and off after 2 minutes. I tried with sensolute micro vibration sensor but no win.

Please help.
 

AnalogKid

Joined Aug 1, 2013
8,157
The delay circuit can be pretty simple depending on all of the information you have not given us.

What is the sensor part number / manufacturer / web page?

What is the system power voltage?

What is the LED color / forward voltage / current?

How accurate does the 2 minute timer have to be?

ak
 

Bernard

Joined Aug 7, 2008
5,291
Good spot for a 555. Sensor to pin 2 with a 10 k to +12 V. Timing , 1 Meg & 120 uF. Best if 1 Meg. is a pot. with C = 200 uF. It looks like the sensor can be initially closed so sensor should be cap. coupled to pin 2. One side of SW to common, other to a 10k & one side of .01 uF cap. Other side of C to pin 2 & other 10k.
 
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