Meet Vario !
@ April 25, 2010
his head is an LED and turns on only when there is no light !
URL to more information:
Time to build:
2 hours
Cost to build:
$2
Not only does he look human , he is also a functioning circuit ! his head is an LED and turns on only when there is no light ! he has got a mind of his Own ! :) simple to make of course , but EXTREMELY Geeky :)
@ Tue, 2010-04-27 12:41
Vario
This is really cute. I am sure that you could market this somehow for kids during the Christmas season. It just needs a little cosmetic work. Great job here and I can't wait to see what else you come up with.
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@ Mon, 2010-04-26 14:09
Very cool, actually! If we
Very cool, actually! If we had a souveneer-shop, this would be a numba one item :) What does it look like on the back, where is the cell?
@ Mon, 2010-04-26 16:17
:)
on the back you have the photo transistor , i described the mode of function in a post under this ! :) Thanks for the compliment :) how about i try making another one and mail it to you ?! if they accept it inside a normal envelop and do not search it thinking its some type of a bomb coming from an Arab country (Lebanon) :P !
@ Tue, 2010-04-27 22:52
I'd be very honered, thank
I'd be very honered, thank you :)
@ Mon, 2010-04-26 17:24
Some ideas
If you shift R1 accidently to +9V and the photo transistor is shadowed at the same time and has a high resistance, Q1 will be fried. Using a 9V block battery and a relay is not very economic :) How is it to use a Li-Ion 3V or 1.5V coin cell on its back? I have once built a resistor man with following circuit. Could be easily modified with a LDR or photo transistor ;) And flashing a long long time...
@ Mon, 2010-04-26 18:55
relay resembles the load ;)
relay resembles the load ;)
@ Sun, 2010-04-25 22:51
Frankenstein !
this tiny thing gets its power in a medieval way :) positive alligator clip clips to one of its legs , the negative end to one leg of the led ! if i were to put a battery it would loose the cute look ! :)
@ Mon, 2010-04-26 00:18
get him a backpack and put a
get him a backpack and put a button cell or two in it
@ Sun, 2010-04-25 22:12
Cute. He looks tiny. Where's
Cute. He looks tiny. Where's the 9V battery?