Controlling a Buzzer Using Google Assistant

Just Simple Steps to Turn on the Alarm Buzzer

I have always wanted to get my hands dirty with Google Assistant.While reading about a blog, I came across a project which described how to control LED using Google Assistant. Which got me thinking to "what if I wanted to alert somebody about something bad happening at my house?".

So here I am describing the project built by me with the help of a project built using LED.

Step 1: Hardware Setup

Plug the longer end of the BUZZER in the Pin 0 of Bolt WiFi module shorter end to the ground pin (GND), and power on the Bolt WiFi module.

Step 2: Getting the Bolt API Key and Device ID

Login to cloud.boltiot.com and note the ID of your Bolt WiFi Module.

Now click on the API Tab and under the section for Generate Key, click on Enable.Next click on the copy button to copy your API key. Your API key will may look something like this: f1f918e9-d9c2-5e5b-aed0-b7cb746f74cf

Your Device ID will be something like this ex:BOLT1112343

Step 3: Writing the GPIO Control Command

Since BUZZER is a digital output device, we will need to get a Digital Write command that can be sent to Bolt over the Internet to switch on the BUZZER.

In Bolt Cloud go to Docs Tab -> API Documentation -> GPIO Commands API -> Write Digital OutputThe command to turn the light on is:

https://cloud.boltiot.com/remote/f1f918e9-d9c2-4e5b-aed0-b7cb743f74cf/digitalWrite?pin=0&state=HIGH&deviceName=BOLT1112343

Make sure that you change the API Key to your own API Key and device ID which you got in the previous step.If you have connected the BUZZER to any other pin other then Pin 0 then make a suitable change in the pin no in your code.

Step 4: IFTTT integration via Google Assistant and Webhooks

Go to IFTTT to create a new applet by clicking here

Click on '+This'

Choose Google Assistant -> Say Specific Phrase

Type the phrase you want to trigger the action. Make sure to specify the trigger command in different ways for example I used

a) Turn the room's buzzer on

b) Turn on the room buzzer

c) Turn on the buzzer in room.

Click on 'Create Trigger'

Click on '+That'

Select Webhooks and then Make a web requestEnter the API URL you got in the previous Step.

Make sure that you change the API Key and device name.

Method will be GET

Content type will be Application/json

Here is how your screen will look like

Make sure you enter the url.

After all the settings done.If you visit My Applets, it will look like this