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README.md

gongpi

GongPi

Rings the gong in the Envoy office every time we make a sale.

DEMO

Requirements

  • RPi GPIO library
  • PIGPIO library
  • Web.py
  • Raspberry Pi (we used Adafruit Raspberry Pi Rev. B+)
  • Internet connection (wired or wireless)
  • Servo on GPIO pin 4
  • One LED on GPIO pin 22

Instructions

Note: These are very loose instructions to help get you started. This guide won't cover the basics of electronic wiring, Raspbian (the Raspberry Pi flavored Linux distro), and setting up a server to send webhooks from.

  1. Install Raspbian Wheezy – I recommend using NOOBS (linked) because it's easier.
  2. Use the raspi-config menu to change the default password and set your time zone. Don't skip this step.
  3. Once at the command prompt, run apt get update and apt-get upgrade to update your base system.
  4. Run apt-get install git
  5. Clone the repo git clone git@github.com:envoy/gongpi.git
  6. sudo mv rc.local /etc/rc.local – this overwrites the default rc.local with one that runs the required scripts on boot.
  7. Install PIGPIO – this gives us a Python library to easily control the servo.
  8. easy_install web and easy_install simplejson
  9. Try running sudo python stripe.py – it should return the following:
http://0.0.0.0:8080/
_

If so, your webserver is now running and listening for incoming webhooks. You can test if incoming webhooks are correctly interprereted by running the following from your machine (not the Pi):

curl -d '{"type":"charge.succeeded"}' [PI's IP ADDRESS]:8080

The LED should start blinking, and your servo should activate. stripe.py will print text in the console, and output an access log to stripe.log.

  1. Restart your Pi sudo shutdown -r now
  2. When the Pi reboots, it will automatically start the network monitor (which will auto-reconnect WiFi if disconnected), pigpiod, and the stripe.py server.

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Rings the gong in the Envoy office every time we make a sale.

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