RFID reader pushing data to web service? - Page 1
Forum section: electronics / general

author: nardev
author_rank: Unknown
timestamp: March 14, 2013, 05:43:42 am
content: I thought i would be very easy to find this device, but it seems that it's not that common.I need as simple as possible, device that will read RFID card and be able to make http request sending that code further to certain service.Or at least, to be accessible so that pulling data is possible to be done without any special software.Also, it should be cheep in range from 100 to 200 USD.If you know anything like that, please suggest...

author: nardev
author_rank: Unknown
timestamp: March 18, 2013, 08:33:10 pm
content: Any idea?

author: jtorba
author_rank: Newbie
timestamp: March 18, 2013, 08:52:27 pm
content: Easiest way I can see is having an arduino read from RFID reader (http://adafruit.com/products/789) and then just have it connected to a computer running a python script to interpret the serial and send an http request. This is lazy but cheapest.A harder way would be to use one of thesehttps://www.sparkfun.com/products/11395with a breakout connected to an RFID reader and be able to make http requests directly on wifi. Both options would be easily below $100

author: nardev
author_rank: Unknown
timestamp: March 18, 2013, 10:04:05 pm
content: Otherwise, any "plug and play" ready device doesn't exist?I have been thinking to place R.Pi with this breakout board, since data needs to be pushed via regular ADSL/Cable connection behind router and i want to avoid using any additional software, i prefer direct communication to API.

author: DavidJRobertson
author_rank: Regular Contributor
timestamp: March 19, 2013, 01:24:47 am
content: You could hook up a RFID reader module to the raspberry pi through its GPIO/serial/I²C connector. Then write a script that listens for data from the RFID reader and makes necessary API requests.Somewhat overkill for this but it'll be fairly easy and it'll work.

author: Harvs
author_rank: Super Contributor
timestamp: March 19, 2013, 01:46:52 am
content: Quote from: DavidJRobertson on March 19, 2013, 01:24:47 amOr one step easier is just use one of the USB RFID readers that sell for around $10 on ebay that emulate a keyboard (in the same way barcode scanners do.) Then as you say, a script on a PI as a web request.

author: nardev
author_rank: Unknown
timestamp: March 19, 2013, 03:14:25 am
content: Give me one example.Are you sure that i will not have problems with drivers?

author: Harvs
author_rank: Super Contributor
timestamp: March 19, 2013, 09:16:35 am
content: http://www.ebay.com.au/itm/New-USB-RFID-Contactless-Proximity-Smart-Card-Reader-Brand-New-125Khz-EM4100-/181084464144?pt=LH_DefaultDomain_15&hash=item2a2979a410&_uhb=1#ht_3091wt_1163Obviously there's many different shapes, sizes and prices.Am I sure it'll work under Linux? Absolutely not, I don't have one to test it and they don't even say it'll work under osx let alone linux, but how many pieces of hardware do say they're compatible with Linux?But a bit of looking around at these things, it looks like they're the same as barcode readers, that just use the HID keyboard class and acts like a keyboard. In that case, I've got a standard USB barcode reader that types in the code and finishes with an enter, and that's completely plug and play on the RPi. Just plug it in at the command prompt and you can start entering barcodes, so I imagine the RFID reader would be the same (but I reserve the right to be wrong.)It's a gamble...

author: nardev
author_rank: Unknown
timestamp: March 19, 2013, 09:54:10 am
content: Quote from: Harvs on March 19, 2013, 09:16:35 ami'll get one.. lets see what comes out of this..