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Smart Doorbell

In this example we will connect the Grove Pushbutton to your Raspberry Pi to detect movement. When the button is pushed, a notification is sent to your smartphone to tell you someone is at the door.

If you are new to using a Raspberry Pi, we suggest you try the basic example on the previous page first.

Prerequisites

Hardware

  • A Raspberry Pi
  • Rapsberry Pi Grove shield
  • Grove Pushbutton
  • Smartphone
  • 8GB SD card

Software

No need to install the sdk and Grove Pi if you are using the AllThingsTalk Raspberry Pi kit. The SD card comes pre-installed.

If you are using your own Raspberry Pi, you can clone the AllThingsTalk SDK to it using git clone git://github.com/allthingstalk/python-sdk.git.
Next install the sdk by browsing to the folder cd python-sdk and the pip3 install . command.
To install Grove Pi support, please follow these instructions.

  • PuTTy (or similar tool) to set up a SSH connection with the Raspberry Pi

An alternative to using a SSH client is hooking up a screen and keyboard to your Raspberry Pi.

Setup

Hardware



  • Insert the SD card into your Raspberry Pi
  • Attach the Grove shield to your Raspberry Pi
  • Connect the Grove button to the D2 connector on the shield
  • Connect your Raspberry Pi to the internet with an ethernet cable
  • Connect the power supply to the mains and your board

Create a device

If you did the basic example on the previous page, you can re-use the same device and credentials.
If not, please check the create a device and enter credentials sections on that page.

Run the example

Run the application with the command python3 smart_doorbell.py

If all went well, a doorbell asset is created under your device in AllThingsTalk Maker. Push the button and see if the value changes.

Next steps

Set up automation rule

As a final step, we will set up an automation rule to notify you on your smartphone when someone presses the Doorbell button.

  • Select Your rules in the main menu (click your account name in the top right)
  • Click the + CREATE RULE button
  • Use rules wizard
  • Select Asset state change
  • Continue
  • Select your device from the list
  • Select the Doorbell asset
  • Compare to some value
  • Select comparison operator: Equal to (==) True
  • Continue
  • Notify me
  • Continue
  • Enter the message you want to receive
  • Check Mobile app notifications
  • Save Rule
  • Enter a name for your rule
  • Save and start