To control the Intensity of LED using Bolt IoT & Smartphone

This project helps us to increase or decrease the intensity of light by using bolt iot. This can be controlled by the Smartphone.

BeginnerProtip3 hours256

To control the Intensity of LED using Bolt IoT & Smartphone

Things used in this project

Hardware components

Breadboard (generic)

Bolt IoT Bolt WiFi Module

LED (generic)

Jumper wires (generic)

Software apps and online services

Bolt IoT Bolt Cloud

Bolt IoT Android App

Story

This system is very useful using Bolt IoT module which helps to calculate the particular intensity of light (LED) and convert it in a manner so that the intensity of LED can be controlled according to the required intensity.

Intensity of the LED can be conrolled through Internet. We don't need any switch board and it can be accessed from some of the distance also.

So, let's move to the further steps to create such a device for us.

The Bolt Iot circuit for controlling intensity of the light

So here is the small video of my project-

Short video of the project

Step 1:

The first and most important thing is connection. So I shall tell you step by step how to do the connections.

1.Connect the negative end of Led to ground pin using jumper wire and bread board.

2.Connect the positive end of Led to 0 GPIO pin using jumper wire and bread board.

Step 2: A unique way of getting the Bolt API Key and Device ID

Login to www.cloud.boltiot.com go to dashboard and then click API there you will get a option called generate key copy the 20 digit API key.

API Key from Bolt IoT platform

Step 3: Coding part of this programStep 3: Coding part of this programStep 3: Coding part of this programStep 3: Coding part of this program

Go to the Dashboard of the Bolt IoT and then click on product. Next go to add product and then give a name of the product you like to connect to your Bolt to input devices and you have to collect the data to GPIO then save it.

Configure your product like this:

Product

Here is the Coding Part:

Code for the Product

Step 4:

Connect the Bolt IoT device using USB and power it on.

Here is the image of screen where we can control the intensity of light through smartphone.

pwm value by which we can control the intensity of the light

Code

Coding part to change the intensity of light.

<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

Trisha Singha

1 project • 0 followers

To control the Intensity of LED using Bolt IoT & Smartphone