Published February 4, 2021 © GPL3+

How to control buzzer by using bolt wifi module

In this project I am discussing about how to control buzzer using bolt wifi module

BeginnerFull instructions provided2 hours149

How to control buzzer by using bolt wifi module

Things used in this project

Hardware components

Buzzer

Bolt IoT Bolt WiFi Module

USB-A to Mini-USB Cable

Software apps and online services

Bolt IoT Bolt Cloud

Story

In this project I am discussing about how to control buzzer using bolt Wi-Fi module, what are the components we need one buzzer, one Wi-Fi module, USB cable, then positive terminal of the buzzer is connected to the zero and negative terminal is connected to the ground then we have to give the 5v power supply then we have to give the html power source and run the code, then when we click ON buzzer will be ON when we click OFF the buzzer will stop.

Schematics

Code

How to control buzzer by using bolt wifi module

<html>

    <head>

        <title>Bolt IoT Platform</title>

        <script type="text/javascript" src="https://cloud.boltiot.com/static/js/boltCommands.js"></script>

        <script>
        setKey('{{ApiKey}}','{{Name}}');

        var last_pwm_value=-1;
        function updateBuzzer(){
            var pwm_value=document.getElementById('pwm_value').value;
            if(last_pwm_value!=pwm_value){
                analogWrite(0,pwm_value);
                document.getElementById('pwm_value_display').innerHTML=pwm_value;
            }
            last_pwm_value=pwm_value;
        }
        setInterval(updateBuzzer,1000);
        </script>
    </head>
    <body>
        pwm value:
        <input type='range' id='pwm_value' min="0" max="255" value="0">
        <div id='pwm_value_display'>0</div>
    </body>

</html>

Credits

CHAITHANYA SAI

1 project • 0 followers

How to control buzzer by using bolt wifi module

Things used in this project

Hardware components

Software apps and online services

Story

Custom parts and enclosures