ID-12 module testing

Wireless & IoT
21

Madeleine, thanks so much for your help

I’ve recreated this circuit on a breadboard and hooked it up to a (measured) 5VDC power supply.

http://www.raymondblum.net/img/id12.jpg

(The ID12 is soldered into the Sparkfun breakout board)

The resistor is 1K, from pin 10 to the LED

The following pins are connected:

1 - GND

2 - +5VDC

7 - GND

10 - 1K - LED - GND

11 - +5VDC

When I switch the power on, I see a brief flash on the LED.

My test is simple enough, I have 2 HID cards (my building security cards from work). I pass either of them over the ID12 module, between a half inch to an inch from the module surface. No LED activity to be seen.

Is there anything wrong with this circuit that anyone can spot or do I have a defective/damaged module?

Thanks

–Raymond

22

Are you sure your cards are the correct type of RFID cards? They need to be 125KHz with this module.

23

They need to be 125khz, and a particular protocol / encoding. The ones from SparkFun Electronics definitely work.

Cheers,

–David Carne