unseen wombat
New Member
Okay, here's the project. I want to build a lucid dreaming induction device. What it will do is wait 20 minutes after being turned on, then blink two LED's at a rate of about 2 to 3 times per minute. (When placed over your eyelids while you sleep, this is proven to help induce a lucid dream, meaning, a dream in which you realize you are dreaming).
Anyway, I need to build this out of cheap, readily available parts. By readily available, I mean, in stock at the local Radio Shack (Don't have Fry's in my part of the country).
I'd like for it to run off a 9-volt battery, because the clips snap on nicely and won't come loose in bed.
I know a 555 timer can handle the blinking. I don't know what size capacitors and resistors to hook up to it though, and I don't know how to make it wait 20 minutes before turning on. (Need to be fully asleep and dreaming before the blinking starts). I suppose you could have one 555 operating in monostable mode, (to delay the start of the blinking), which activates a second 555 operating in astable mode (to blink).
If there is another way to do this, possibly with fewer components, I would greatly appreciate any suggestions. Remember, this needs to be kept near, or maybe even on the bed while sleeping, so a big clunky circuit board with a dozen components that might get rolled over on is impractical. If you know of any other readily available chips that would work better, to which I wouldn't have to hook as many resistors and capacitors, please let me know. The fewer the better.
I know I'm pretty stupid regarding electronics stuff, but me and a lot of other people at dreamviews.com would really appreciate your help. Thanks everybody.
Anyway, I need to build this out of cheap, readily available parts. By readily available, I mean, in stock at the local Radio Shack (Don't have Fry's in my part of the country).
I know a 555 timer can handle the blinking. I don't know what size capacitors and resistors to hook up to it though, and I don't know how to make it wait 20 minutes before turning on. (Need to be fully asleep and dreaming before the blinking starts). I suppose you could have one 555 operating in monostable mode, (to delay the start of the blinking), which activates a second 555 operating in astable mode (to blink).
If there is another way to do this, possibly with fewer components, I would greatly appreciate any suggestions. Remember, this needs to be kept near, or maybe even on the bed while sleeping, so a big clunky circuit board with a dozen components that might get rolled over on is impractical. If you know of any other readily available chips that would work better, to which I wouldn't have to hook as many resistors and capacitors, please let me know. The fewer the better.
I know I'm pretty stupid regarding electronics stuff, but me and a lot of other people at dreamviews.com would really appreciate your help. Thanks everybody.