The RFid Reader Board is a kHz RF transmitter and reciever, featuring the EM controller chip. The reader has three main functions. The EM is replacement IC of the UB Atmel reader chip. EM is a CMOS integrated transceiver circuit for RFID applications. EM Read only Receiver and transmit to UART 10 digit hexa code by ASCII.

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When you use too much solder, and two feet are soldered together do not panic. Regarding the solution I didn’t succeeded to calculate L and Q factor. Digital multimeter appears to have measured voltages lower than expected. PNP transistor not working 2. Measure pin 1 and pin 2 of IC1 the voltage input and pin 3 and pin 2 of IC1 the voltage output.

any sample code for rfid reader using EM for khz? how to write the code?

IC1 is a voltage regulator that regulates the input voltage to 5V. Losses in rffid of a boost converter 9. You can connect the battery cord to header X1. Dec 248: How can the power consumption for computing be reduced for energy harvesting?


Parallel on the relay there is a LED for a visible indication.

Build loop PCB antenna for EM RFID Reader

The Interface to the EM is through 4 lines. Synthesized tuning, Part 2: Choosing IC with EN signal 2.

We made a em0495 AN that can be used as a door opener. Turn on power triac – proposed circuit analysis 0. When there is roomor the tag is new, it will be stored. Question about current and voltage of RFID reader antenna When a valid tag is held in front of the antenna, it will activate the relay for 2 seconds. A coil, capacitors that tune the coil for KHz, are basically all that you need.

EM4095 rfid 125khz rfid reader module

Magnetic RFID reader antenna 1. The LED will be turned on as well.

I want a receiver side code to receive the data from multiple tags Since the circuit is not for beginners, there is no reverse polarity protection. The red wire is the plus. A complete KIT is available from the web shop at www.


Best regards, Dusan Mihajlovic. Originally Posted by mmohdnor.

Losses in inductor of a boost converter 9. Synthesized tuning, Part 2: Notice the gap in the middle which must match with the PCB. Since the chip has a boot loader, you can serial program the device. Distorted Sine output from Transformer 8.

Connect the battery and measure with a Volt meter if IC1 actual outputs 5V. Hierarchical block is unconnected 3.