Barcode Scanner Integrated to Arduino

This project is ideal to acquire information from barcodes to your Arduino. It could be use for store automation purposes.

A barcode is a machine-readable code in the form of parallel lines with varying widths.

Components

// Live from circuit.rocks shop

SKU: —

Arduino Uno R3 Board Atmega328

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add

SKU: —

Usb Host Shield Arduino

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add

Hardware + Supplies

• any USB Barcode Scanner

Connecting Everything

Stack the USB Host shield on top of the Arduino board

Then Connect The Barcode Scanner to USB slot of USB Host Shield.

Code:

Before coding anything, you must install the USB Host Shield Library on your Arduino IDE.

#include <usbhid.h>
#include <hiduniversal.h>
#include <Usb.h>
#include <usbhub.h>
#include <hidboot.h>
USB Usb;
USBHub Hub(&Usb);
HIDUniversal Hid(&Usb); String data = ""; class KbdRptParser: public KeyboardReportParser { void PrintKey(uint8_t mod, uint8_t key); protected: virtual void OnKeyDown (uint8_t mod, uint8_t key); virtual void OnKeyPressed(uint8_t key);
}; KbdRptParser Prs; void setup() { Serial.begin(115200); Usb.Init(); delay(200); Hid.SetReportParser(0, (HIDReportParser*)&Prs);
}
void loop(){ Usb.Task();
} void KbdRptParser::OnKeyDown(uint8_t mod, uint8_t key) { uint8_t c = OemToAscii(mod, key); if (c) OnKeyPressed(c);
} void KbdRptParser::OnKeyPressed(uint8_t key) { char c = (char)key; if (key == 19) { String ret = data; data = ""; barcodeCallback(ret); } else { data += c; }
} void barcodeCallback(String data){ Serial.println(data);
}