ive done a realy simple circuit to wind my mum up just playing around with a cds cell lol, i connected a battery, Cds cell and a buzzer in series and fitted it into a 4AA battery holder (one side for batteries, the other for buzzer+wires, the Cds cell is "lose" so i can move it) i placed it under her light, so when she turns it on its going to give an annoying bzzzzzzz , she has an upward facing light shade so it is hidden, also i posisioned it so when you turn the light on, you can't see the shaddow lol :twisted:
yeh i know, im gunna do that aswell put that in my sisters room :twisted:
ive ordered most of the parts for it i was buying parts for my model railway signal and i thaught why not?? :lol:
i was thinking about that, wasnt sure if it could be done, you could also try to make it so at first there is a minuit gap, then 40 seconds, then 30, 20, 10 ,5 1,1, 1, 1, and then a minuit (after the 4th 1 second gap, they will think it has stopped and then when it comes on after a minuit again....... :twisted: lol
oh yeh, it went well, my sister went in, turned the light on and it buzzed, she turned it off and on again... buzzed again she sed oh s**** and walked out, my mum came up and turned it on, she screamed coz she thaught it was a wasp or something, she turned the light off.. buzz stoped.. turned it on and it buzzed again, she was about to phone gordan (the electrician that does all our plumbing, DIY and electrical jobs) i had to go in and stop her!!! lol
Electro, I'm still trying to get my PIC programmer to work, so when I do, and get a little knowledge on how to program PICs, I'm going to do just that :twisted:
It can be somtines compicted to get purly random numbers.The easyest way is the pusedo number.
There is also an advantege since PICs use realy realy litle power.Especaly wen run at 32Khz.Even at full power(20Mhz) the PIC will consume les than 2mA.
And an Piezo speaker.It may seem silent but wen you are in bed you get used to the silence and hear it prety loud.
The one whith the PIC i built maked such buzing sounds like a fly.
You know what sfunny the Tv remote blocker, it sends a series of IR signals and doesn't let the tv remote work while holding the switch.
Simple circuit but fun to watch dad try to use the remote.
I used a 555 to modulate an IR LED @ 25khz. This was actually for a system that I made for my friend that beeps when someone walks through the door (IR sensor on the other side), but it worked fine for the TV.