voucherpi

These scripts will run on a Raspberry Pi.
When the button is pressed it creates a voucher on a Unifi controller and prints it on the thermal printer.

Configuration on the raspberry pi

1. Install php-curl and wiringpi (apt-get install php-cli php-curl wiringpi) or (apt-get install php-cli php-curl; wget https://github.com/WiringPi/WiringPi/releases/download/2.61-1/wiringpi-2.61-1-armhf.deb; sudo dpkg -i wiringpi-2.61-1-armhf.deb in more recent distros)
2. Put the files in /home/pi/voucherpi
3. Copy config-default.php to config.php and input you settings in it.
4. Update the GPIOs numbers in the button.sh file to match your connections.
5. Add sh /home/pi/voucherpi/button.sh to /etc/rc.local.
6. Reboot.

Credits and references:

Includes and makes use of these projects:

• mike42/escpos-php : https://github.com/mike42/escpos-php
• Art-of-WiFi/UniFi-API-client : https://github.com/Art-of-WiFi/UniFi-API-client

Based in part on Adafruit's Instant Camera using Raspberry Pi and Thermal Printer project

• https://learn.adafruit.com/instant-camera-using-raspberry-pi-and-thermal-printer/system-setup