One Wire Data Sender Chip

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Hello guys

I am working on  a PROJECT which I have to identify Some different (metallic) nuts.

I thought using hall sensors might be the best choice ,but I found it usable!

I heard there is Some kind of chips which are tiny and can connect to micro by one wire protocol and they just send an ID like a RFID tag.

  Does anybody USED that or knows about it?

Thanks,

Ehsan

 

EDIT: Moved to General Electronics. Moderator.

You can DO EVERYTHING!

Just believe yourself !!!

Last Edited: Tue. Jul 14, 2015 - 03:25 AM
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Are you thinking of the Maxim (formerly Dallas Semiconductor) 1-WireTM devices?

 

http://www.maximintegrated.com/e...

 

Specifically, the DS2401 "Silicon Serial Number" - http://www.maximintegrated.com/e...

 

Other 1-WireTM identification parts: http://para.maximintegrated.com/...

 

Note that these are essentially the same as what's inside the iButton devices: http://www.maximintegrated.com/e...

 

https://en.wikipedia.org/wiki/1-...

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You do need two wires though!

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Kartman wrote:
You do need two wires though!

Well, you need something to provide the "ground" reference - may not necessarily need to be a separate wire; but you will need some sort of connection.

eg, chassis.

 

And some "1-Wire" devices can use three wires!

 

surprise

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Thank you

Can I use one wire with a IR LED ??????

I  mean transmit it by IR led????

You can DO EVERYTHING!

Just believe yourself !!!

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Not with just an IR LED.

 

These devices need to work as slaves to a "host" - so you'd have a microcontroller "host" reading the ID chip, and then transmitting what it read over the IR link ...

 

Edit:

 

If you're going to use a microcontroller anyhow, choose one with a built-in unique ID - then you don't need an external ID chip!

 

smiley

 

http://www.avrfreaks.net/forum/h...

Last Edited: Tue. Jul 14, 2015 - 10:54 AM
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Why not just use RFID? You can get tags with stickers. Or barcodes?