DIY, OOPF, RFID

[Stump Grinder]

Does any one know how to build up an Rfid system from scratch? The technology isnt new cant be that expensive.

 

[sjt01]

Arduino - do a search

 

[TechWise]

I've been looking into this a lot myself lately, being an Electronic Engineering student.
I got a kit from Velleman that can read an RFID card or the microchip in some cats.
The problem is, most RFID systems run at 125kHz whereas sheep tags work at 132.5kHz.
Some people say it's just as simple as changing the oscillation frequency either by changing the Quartz crystal or by altering the programming. Others say it's not as simple as that.
I'm saving up to buy a proper textbook on the subject with a view to building one from the ground up.

 

[TechWise]

PS
I'd be intersted to hear if anyone gets anywhere with this.

 

[Notquiteretired]

Does any one know how to build up an Rfid system from scratch? The technology isnt new cant be that expensive.

What do you mean by RFID system? A panel reader? Wand? Software to handle the data feed?
I remember seeing a half decent home made wand reader (housed in blue water pipe!) on YouTube about 1yr ago.

 

[newholland]

davlec

 

[Stump Grinder]

I was thinking a panel reader or a walk through hoop antenna, an Arduino or similar and a concentrate feeder.

 

[sjt01]

Lots of people doing cheap RFID kits for Arduino, eg for £3.49 there is this:
http://www.miniinthebox.com/rfid-rc...vUkU-wTGOJLNqIR7kBy0-vb-0h9JjtpkXoaAreP8P8HAQ

This is also worth a read:
http://playground.arduino.cc/Main/DIYRFIDReader

Stephen

 

[TechWise]

Lots of people doing cheap RFID kits for Arduino, eg for £3.49 there is this:
http://www.miniinthebox.com/rfid-rc...vUkU-wTGOJLNqIR7kBy0-vb-0h9JjtpkXoaAreP8P8HAQ

This is also worth a read:
http://playground.arduino.cc/Main/DIYRFIDReader

Stephen

I'm assuming that OP, like myself, wants to read EID tags in sheep.
The system in that link reads at 18.56MHz so it is not compatible with EID tags
If however, the OP wants to build some other system, like a calf feeder that uses RFID collars, the system you suggest would work as he would be free to put whatever frequency of tag in the collar as he saw fit.

 

[sjt01]

I presumed from the thread title that it was for dairy cows in an Out Of Parlour Feeder (OOPF)

 

[sjt01]

Also, for different frequencies, change the design of L1 in the circuit shown in http://playground.arduino.cc/Main/DIYRFIDReader
to suit

 

[TechWise]

I presumed from the thread title that it was for dairy cows in an Out Of Parlour Feeder (OOPF)

Apologies, I wasn't familiar with the OOPF abbreviation.
So do the cows already have some sort of RFID collars as part of a rotary palour/robot setup?

 

[Stump Grinder]

My cows don't have any radio tags at the moment. I have a dairy plan, GEA parlor but no identification.

 

[Blue.]

My cows don't have any radio tags at the moment. I have a dairy plan, GEA parlor but no identification.

I have out of parlour feeders connected to my dairyplan computer,they use nedap readers/receivers my transponders are 120khz PM type.

I have a 100 or so 120khz Am type,they work with my readers but not at the same time as the PM type

Ideally I want to change my readers so they read hdx type tags then I wouldn't need to bother with collars.