What is it?

This is a Extended Range (14-ft) UHF RFID tag Reader and Writer. If works on Works on Windows, Mac (Aarch64 - Intel or ARM chip), Linux (x64), Raspberry PI, Beagle Bone, Orange PI and Banana PI. Ported to Python 3, Ported to Arudino. It has complete integration with Arduino including sample code.

Why did you make it?

A reliable long range UHF RFID reader and writer with 14-ft or longer range is not readily available for Arduino and PC for a reasonably low price. This product is designed to address this market segment so this device can be used by students, teachers, researchers, DIY enthusiasts or even professionals.

What makes it special?

J4220U is a mid range UHF RFID Reader and Writer for Students, Teachers, Researchers and DIY users. It can be powered by USB if PC is used to scan the UHF tags. It may also be powered by Arduino if it is to be used along with Arduino (without using PC).

PC CONNECTIVITY

Uses USB 2.0 or 3.0 for power to emulate as serial port. Default speed is 57600 Kbps but can be increased to 115200 Kbps with the App or Software. Does not need driver in most cases. Links to load driver provided.

ARDUINO CONNECTIVITY

To use with Arduino, J4220U have a external UART port. Arduino's UART port should be connected to this port along with power pins as described in the Users Manual. Sample codes are provided with the software.

OS SUPPORT

Runs on Windows (x64), Mac (Aarch64), Linux (x64), BeagleBone, Raspberry PI (64-bit), Orange PI (64-bit), Banana PI (64-bit). Fully ported to Python 3.

SOFTWARE

Open source royalty free SDK and Demo can be downloaded from https://github.com/jence/j4210u-app. Well documented in English. Version is frequently updated. Features are constantly been added.

TAG TYPE

Reads EPC GEN 2 ISO18000 6B/6C tags or inlays. Range upto 14 feet (4.5m) with large RFID tag (Like Avery Dennison DogBone). Can write into User Memory, change EPC value, change password, lock/unlock tag. Frequency range Frequency 902-928MHz (US and CN).

POWER

Power setting can be adjusted using the Demo or Software from 0 - 26dbm. At maximum power, current drawn is only 320mA. Can work at this power continuously without heating up the device.

READ RATE

Can detect multiple tags in fraction of a second at the rate of 50 tags/sec and display the chip type, memory information.

COLLISION AVOIDANCE

Q algorithm based collision avoidance. Q range from 0 to 15. Up to 4 session is supported. Session allow multiple readers to operate on same tag without affecting the state.

SERVER APPLICATION

SDK contain examples on how to send the tag data to a server using JSON messages. The tag inventory may be save into a file for later use. Tag inventory may be sent to a HTTP/HTTPS server as JSON query string. DEMO. The demo is written in Java and Pyton3. Arduino demo is written in C++. The open source demo allows in-place memory editing, changing the EPC code and memory content. The software is smart enough to know number of bytes in user memory, number of bytes in EPC and TID and detects if the chip has any user memory. In merge mode, all the tags read is merged allowing unlimited number of tags to be scanned.

CONTENT

Includes 1.5 meter USB mini cable one EPC Gen 2 UHF sticker. 1 GPIO cable, 1 UART cable, 3 pcs UHF RFID tags, 1 Year Warranty.