#2d barcode scanner how to
#2d barcode scanner serial

Upload the example and open the serial monitor with the baud set to 115200. As we mentioned in the previous section, sendCommand() takes two strings, links them together, adds the command prefix ('^_^') and suffix ('.') and sends the command to the DE2120.

#2d barcode scanner how to

The third example demonstrates how to use the sendCommand() function to send serial commands to the barcode scanner either through scanning barcodes or a serial monitor. After the setting is adjusted, the code prints if the adjustment was successful and returns to the 'main menu'. Enter the number corresponding to the preferred behavior and hit ENTER again to change the setting. The code then prints out the available options for the selected setting. Select an option number by sending the corresponding number and hit ENTER. After initializing the DE2120, the code prints out the selection options for the user.Д¬lick on the screenshot above for a larger view of the serial monitor Select and upload the example and open a serial monitor with the baud set to 115200. The second example shows how to adjust a selection of seven scanner settings using a 'menu' in the serial monitor. With a serial monitor open, try scanning barcodes with the breakout and watch the code data print out. If there is data in the buffer, the code prints it. The setup attempts to initialize the barcode scanner and, if successful, the main loop will start polling the buffer for any data every 200ms. The example assumes an ATMel328-based Arduino like the SparkFun RedBoard is used so if you prefer a different board, adjust this line if necessary: language:cДЄfter declaring the pins to use for RX/TX in Software Serial, the code creates the scanner object as well as the scanner buffer and buffer size: language:c Since this example uses the Software Serial library, make sure to refer to this page for pin compatibility limitations for common Arduino boards. After the upload finishes, open the serial monitor with the baud set to 115200. Select the correct Board and Port from the 'Tools' menu and click upload. Open the example in Arduino by navigating to 'File > Examples > SparkFun DE2120 Arduino Library >Д®xample1-SerialScan'. This basic example demonstrates how to connect the scanner to an Arduino via Software Serial and output any barcodes it sees over serial. scanning mode, image flipping, LED settings, etc.) prior to assembling your Arduino circuit and using the examples.

The 2D Barcode Scanner saves all settings during power cycles so you can configure the DE2120 however you would like (e.g.