Hi! Im very new to arduino, and was wondering if this would be possible:
Would one be able to use an arduino to "process" more than one RFID module. My idea was to use RFID to organize a freezer. Under each box would be a tag, and under each tag would be an RFID module, which over RF transmits data to the arduio. I understand that this alone can be done, but can it work with >10 modules? can each rfid sensor handle more than one tag at once?
Thanks for your help!
can each rfid sensor handle more than one tag at once?
It depends n the type of reader and tag, most of them won't.
over RF transmits data to the arduio
Tricky but not impossible, it probably needs another arduino coordinating things. You can't use 10 transmitters you have to use one and send each reader's output in turn, you could make some logic to do this but your skill is probably not up to it.
Also RFID readers can interfere with each other if they are too close to each other.
This project used three RFID readers:-
http://www.thebox.myzen.co.uk/Hardware/Crazy_People.html
The following would work, if your users would remember to do what they needed to...
As each item is added to the fridge, it would be given an RFID tag, and what that tag was on would be added to database. (This needs doing anyway).
As each item is used up, the item would have to be passed over the RFID reader, which could be beside the 'fridge.
Maybe barcodes would be easier, as most products already have them? (Items without a bar code could be stored in bar-coded containers. Steal a barcode from, say, a box of paperclips, and tell your computer that the "paperclips" is your jug of fresh-self-squeezed orange juice)
In a nutshell: RFIDs (and barcodes) are good for "in and out" accounting, not so good for a "stock take". Net stock levels deduced from disciplined logging of all ins and outs.