by kraverauk » Sun Feb 22, 2015 9:13 pm
Hello, I am an electronics student at college and i am creating an alarm system for my car. I want the alarm to run for 10 minutes but i am unsure how to create a 555 timer circuit that makes the alarm run for 10 minutes? I have created a few test circuits using the 555 timer with a battery, two resistors, a capacitor and an LED to get the LED to run for a certain amount of time but i can only to get it to blink and not stay on for a set amount of time, can someone please give me advice ?