This project is about making alarm clock and setting different frequencies to Buzzer to make it sound as required. In time of lockdown when you don't have access to hardware for making innovative projects I came up with a simple timer alarm clock with amazing sounds. so lets get started-
Step1: Preliminaries-- Register on the bolt cloud and connect the bolt device.
- Create a free account on the Integromat.
Step2: Make hardware connections-- Connect the longer end(+ve end) of the Buzzer to pin 1 (or any other GPIO pin i.e 1 2 3 or 4) of the Bolt.
- Connect the shorter end(-ve end) of the Buzzer to the GND pin of the Bolt.
- Power on the Bolt device using a USB cable and connect to home network or mobile hotspot.
Step3: Setting time on Integromat (automatic)-- Sign in to your Integromat account.
- Click on Create a new scenario.
- Search and select "bolt iot".
- Enter your API key by clicking on the Add button as shown below. You can find your API key on your Bolt Cloud dashboard.
- Select command as Write Analog output to vary frequency of buzzer (Write digital output to make frequency of buzzer constant).
Add your bolt device by clicking on add and entering your api key and device id
- Select Write Analog Output from the command and provide an analog value according to your choice (say 80). It should be within 255.
- Next, we want the buzzer to ring for a few seconds at least. So we need to add a delay before switching off the Buzzer again.
- Click on the tools option and select sleep.
- I have provided one sec delay for first time.
- Click on adding a new module and choose Bolt IoT again. Now, in this module, we are going to provide another value (say 140).
- Again select tools >> Sleep >> Add delay (say 2 sec)
- As I want to increase my alarm time I have added another bolt module with 180 as output >> Sleep (2 sec).
- Now If the person still doesn't wake up I have provided with analog output to max (255)
- At last I have added delay of (5 sec) and turn it off by providing analog output 0.
- You can also connect led in parallel with buzzer for variation in light effects.
- Click on the little clock icon on the initial Bolt module. Choose the time that you want the alarm to ring and click on OK.
Your amazing timer alarm clock with sound variation is created and don't forget to save your scenario and to on the scheduling.
- To test if the buzzer actually works, click on the "Run Once" button. The buzzer should ring for 10 seconds (1+2+2+5 in my case) and then switch off.
10 seconds will be enough for anyone to wake up. So enjoy making this easy alarm clock without any coding for the beginners.
Demo ------>>>>
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