[vc_row][vc_column width=”1/1″][vc_column_text]In this tutorial we are going to demo how to use arduino and cottonwood to read UHF RFID.[/vc_column_text][vc_tour][vc_tab title=”Hardware:” tab_id=”1396492655-1-30″][vc_column_text]

1. [bigcommerce link=”/arduino-uno-compatible-usb-board-r3/” target=”_blank”]Arduino UNO[/bigcommerce]
2. [bigcommerce link=”/cottonwood-long-range-uhf-rfid-reader-uart-iso18000-6c-epc-g2/” target=”_blank”]TTL UART UHF RFID Reader (Cottonwood)[/bigcommerce]
3. [bigcommerce link=”/5dbi-pcb-uhf-rfid-902-928m-antenna-5cm-x-5cm/” target=”_blank”]RFID Reader Antenna[/bigcommerce]
4. [bigcommerce link=”/wall-adapter-power-supply-5vdc-2a/” target=”_blank”]5V/2A DC Wall Adapter[/bigcommerce]

[/vc_column_text][/vc_tab][vc_tab title=”Wiring Diagram:” tab_id=”1396492655-2-50″][vc_column_text]

1. Pin 3 of Arduino UNO  is connected to Cottonwood’s TX.
2. Pin 4 of Arduino UNO is connected to Cottonwood’s RX.
3. GND of Arduino UNO is connected to Cottonwood’s GND

[/vc_column_text][/vc_tab][vc_tab title=”Sample Code” tab_id=”1396494045127-2-3″][vc_column_text]

#include <SoftwareSerial.h>
#include <LiquidCrystal.h>

#define RXPIN 3
#define TXPIN 4

char command_scantag[]={0x18,0x03,0xFF};//const
int incomingByte;
SoftwareSerial myserial(RXPIN,TXPIN) ;

void setup()
{
Serial.begin(9600);
myserial.begin(9600);
}
void loop()
{
// turn on antenna
while(Serial.available())
{
incomingByte = Serial.read();
if(incomingByte='r')
{
myserial.print(command_scantag);
}

}
delay (1000);
while (myserial.available())
{
incomingByte = myserial.read();
Serial.println(incomingByte,HEX);
}
}

The sample Arduino code can be downloaded from:

[/vc_column_text][/vc_tab][vc_tab title=”Test” tab_id=”1396497503938-3-2″][vc_column_text]Now, in X-CTU, by pressing ‘r’.

And you can see “0x19 0x03 0x00”.

That means your cottonwood is working properly.[/vc_column_text][/vc_tab][/vc_tour][/vc_column][/vc_row]