Waveshare barcode scanner modules provide USB HID and serial interfaces for barcode and QR code scanning — essential for inventory, POS, and asset tracking.
Table of Contents
Barcode Types
- 1D: Code 128, EAN-13, UPC-A (retail products)
- 2D: QR Code, Data Matrix (digital payments, tickets)
- UPI QR: Standard in India for Google Pay, PhonePe, Paytm
Recommended: Waveshare ESP32-S3-Nano Development Board
Specs
- 1D + 2D scanning, USB HID or UART
- Decode speed under 100ms
- Reading distance 3-30 cm
- Auto-sense, manual, or continuous mode
USB Setup
In USB HID mode, scanned codes are typed as keyboard input. Plug in and scan — data appears in any text field.
Python Reading
UART Mode
import serial
ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=1)
while True:
data = ser.readline().decode().strip()
if data: print(f"Scanned: {data}")Recommended: Waveshare 2.8inch Touch LCD Shield for Arduino
Applications
- Inventory management and warehouse tracking
- Point of sale with price lookup
- Attendance via QR code ID cards
- Asset tracking with barcode labels
- Library management via ISBN barcodes
Frequently Asked Questions
Scan from phone screen?
Yes, modern 2D scanners read phone-displayed QR codes.
Scanning speed?
Under 100ms per scan.
Generate barcodes too?
Yes, use python-barcode and qrcode libraries.
Works in low light?
Yes, built-in LED illumination.
Conclusion
Waveshare barcode scanners bring professional scanning to Pi projects for inventory, POS, and attendance systems.
Browse the full Waveshare collection at Zbotic.in with fast shipping across India.
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