A phone blinky problem...

Hello everyone, I was just wondering if anybody knows how those stick on blinky stickers on mobile phone works? If so, then is there any way to make a homemade version of those things, also what does the circuit look like? A project that could be made by this knowledge is a powerless battery holder, that flashes on every phonecall.

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pavalos9 years ago
akimbo m (author)  pavalos9 years ago
Thanks but sorry, i don't really understand how it works or how i could construct it. It doesn't have even a schematic. Perhaps you can show me how to construct one that can power at least a led. If you can, you can even make an instructable.
LasVegas10 years ago
I found a source where you can buy a tiny module to build your own. It could be an educational experience...

Phone Flasher
akimbo m (author)  LasVegas10 years ago
Thanks alot, thought i want to construct my own module instead... and so i fired off this 'social engineering' email "About one of your product that you offer, called the Phone Flasher, I was wondering if you could tell me how I could construct such a device out of standard electronic hobby parts (E.g. Transistor that uses pins, instead of being surface mounts)? I would like to create a demonstration device for an end of year school presentation, which can show how a device can power another device wirelessly. This is because I believe that this is a much more unique project that would appeal to my classmates. I would greatly appreciate your assistance in the matter of providing me with a schematic, or at least a pointer to where I can consult for further resources. Thank you for your time. Akimi " I tell you if i get any success stories
Goodhart LasVegas10 years ago
Oh I like that link. There certainly is a quantity of ideas there. Thanks
Goodhart10 years ago
if anybody knows how those stick on blinky stickers on mobile phone works

Can you give an example, pic, or link...I am not sure I know what you are referring to.
Goodhart Goodhart10 years ago
Hello ?
akimbo m (author)  Goodhart10 years ago

Hi, just got back. Here is an example of what i am talking about.
Goodhart akimbo m10 years ago
Sorry, I didn't mean to rush you, I just didn't want this to disappear...thanks for bringing me up to speed (Blinking sticker). That is a really cool application of an old idea (I think). If it really doesn't have a battery (and it very well might not), I THINK it is based on a project I made in the past (I will have to dig it up again for details) that used a (um, my memory is fuzzy here) Schottky diode and an LED (and a few other pieces of hardware, but no battery) to produce a Microwave leak detector.

Now, this frequency mentioned (around 800MHz, 1,900MHz) is below Microwaves, but it still acts (again, I believe) similar to a crystal radio set, that uses the input/output of the antenna (since it is to be located very near it) to generate a little voltage for the LED's
akimbo m (author)  Goodhart10 years ago
Would you mind shifting though your past project... i am interested in how much does a circuit for 'capturing mobile radiation', differs from a crystal radio set. It would be pretty interesting if we can make it efficient and cheap, enough to make a field rechargeable throwie.
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