Daniel Garden has built a system on his watch that notifies him when someone rings his doorbell and he receives notification on his Pebble smartwatch. This could be a great help to people with hearing problem. On an average, he has used a Raspberry Pi, a Pebble Smartwatch, Pushover, and some electronic components that sends a message through Pushover to the watch by triggering raspberry pi. Let’s have a look on his working.
Equipment to be used
Apart from raspberry pi model B, pebble smart watch, IOS or android pushover app and a pushover account, you need a pull up resistor for the button circuit, PC speakers, multi core cables to connect to raspberry pi. Make sure to have a momentary push button that will act as the doorbell.
How does it work?
To begin with, you have to wire and mount your button. The wiring layout entirely depends on your module of working, just make sure you remember what wire works for what before permanently mounting the button. It includes activating python code and powering of LED. Once finished with wiring section, mount it outside your house with wall plugs.
Now, you have to work on raspberry pi and pushover. To the raspberry section, raspbian is currently having EDIMAX drivers built within as standard. This will do your work. Now, download the pushover app, register the application and create a new application. Make sure you can send notifications to your pebble. After creating the application, you will be automatically taken to application page where you have to note down the API token and user key. Later one can be found on the main dashboard page on pushover.
Now, here requires some simplification of coding, which is already done by the author. This allows usage of one button only and to push messages to the pushover notification service.all you have to do is to copy the code on your raspberry pi and replace the application_token’ and ‘user_token’ strings from your Pushover Account that you noted down earlier. Then save an MP3 for playing in the directory of your choice.
Here comes the wiring on the raspberry pi. The wiring diagram which includes connecting of a 10K pull-up resistor between 3.3V logic level and the GPIO pin you want to use. Then the button is wired to ground and GPIO pin.
Now, when the button is pushed, GPIO pin is pulled to ground. If everything has been done correctly, then fire the MP3 to play and eventually a notification is sent.
Don’t forget to plug in the speakers into the audio out on the Raspberry pi. Additionally you can work on powering of the LED. It requires wiring of the raspberry pi for power.
Daniel garden has used raspberry pi in a simple but effective way that recognizes the switch being flipped. It sends an alert to your pebble smart watch and plays a notification sound. It offers a great opportunity to those people who have hearing difficulties.
Filed Under: Reviews