1_Settings.md

1. Update

sudo apt-get update
sudo apt-get upgrade

sudo rpi-update

2. reboot

3. Enable Camera

sudo raspi-config

Enable Cameera -> Yes

4. Set camera module to /dev/video0 when boot

sudo nano /etc/init.d/startup

#!/bin/sh

/sbin/modprobe bcm2635-v4l2

sudo chmod 755 /etc/init.d/startup
sudo update-rc.d startup defaults

5. install zbar-tools

6. download QRCodeReader.py

7. Start GUI

startx

8. run python script

python QRCodeReader.py

9. scan QRCode

QRCodeReader.py

import sys
import os

p = os.popen('/usr/bin/zbarcam --prescale=300x300 --Sdisable -Sqrcode.enable', 'r')

def start_scan():
    global p
    while True:
        print('Scanning')
        data = p.readline()
        qrcode = str(data)[8:]
        if(qrcode):
            print(qrcode)
            
try:
    start_scan()
except KeyboardInterrupt:
    print('Stop scanning')
finally:
    p.close()