Scamatic Help Needed!!

[rhys]

Hello All,
I am looking to create a circuit that when powered a green light switches on for a timed period and after pressure is applied it switches off. However if no pressure is applied and the time runs out it switches red permanently, until being reset.

Any suggestion or help is much appreciated.

 

[emc2]

You could use the 555 in monostable mode (see here) and put the pressure switch on the input, then wire the green and red lights to the output, sinking one high and one low. This would however always have one light on though.