I'm trying to create a circuit using two 555 timers, that once triggered via a switch, will stay low for a set period of time before going high and staying high.
I've found these two seperate schematics and have altered the values in the rc network, but haven't found a successful way of using them together.
Delay on,
http://clarkson-uk.com/555-timer/operation/frames3.html
Big LED Flasher,
http://www.simple-electronics.com/2010/11/led-flasher-circuit-using-555-ic.html
I've tried using a transistor as a switch to allow and stop the power supply to the flasher, therefore turning it off/on, however i was unsuccessful. Could this method work and i've made a mistake hooking it up? Or is there a way to do this using pin 4 of the 2nd 555 and maybe a different circuit at the start?
Any advice would be greatly appreciated. Also this is my first post, so i hope I've done everything right?
Thanks
I've found these two seperate schematics and have altered the values in the rc network, but haven't found a successful way of using them together.
Delay on,
http://clarkson-uk.com/555-timer/operation/frames3.html
Big LED Flasher,
http://www.simple-electronics.com/2010/11/led-flasher-circuit-using-555-ic.html
I've tried using a transistor as a switch to allow and stop the power supply to the flasher, therefore turning it off/on, however i was unsuccessful. Could this method work and i've made a mistake hooking it up? Or is there a way to do this using pin 4 of the 2nd 555 and maybe a different circuit at the start?
Any advice would be greatly appreciated. Also this is my first post, so i hope I've done everything right?
Thanks