Hi ,
I am trying to build a 555 timer from a project I found on the web. ( http://poweredpowerhour.wordpress.com/ ) pretty cool huh . For his build he has a 555 timer thats high for 55 sec and low for 10 sec. I have been able to do the same but I would like to change it up a bit. I want to have one led light up for the 55 seconds and then switch to a different color for the 10 seconds. I dont really know anything about 555 timers and my knowledge is still very basic but what I came up with was to use a PNP transistor to power the different led when the timer is low. I dont even know if this is the right thing to do but I sounds about right. Anyways I hooked everything up and no luck. The 555 timer just gets really hot to the touch after a short time. Anyone have an idea of whats wrong. Or if I am even doing it right ha. Here is a picture of what I have tried, sorry I didnt put a lot of time into drawing it.
Thanks!
I am trying to build a 555 timer from a project I found on the web. ( http://poweredpowerhour.wordpress.com/ ) pretty cool huh . For his build he has a 555 timer thats high for 55 sec and low for 10 sec. I have been able to do the same but I would like to change it up a bit. I want to have one led light up for the 55 seconds and then switch to a different color for the 10 seconds. I dont really know anything about 555 timers and my knowledge is still very basic but what I came up with was to use a PNP transistor to power the different led when the timer is low. I dont even know if this is the right thing to do but I sounds about right. Anyways I hooked everything up and no luck. The 555 timer just gets really hot to the touch after a short time. Anyone have an idea of whats wrong. Or if I am even doing it right ha. Here is a picture of what I have tried, sorry I didnt put a lot of time into drawing it.
Thanks!
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