Project Link: https://cloud.boltiot.com/control?name=BOLT8023093
In both the cases the user in able to control the LED/ Buzzer remotely using either the Bolt Platform or the Ubuntu server terminal. The user can remotely turn-ON or turn-OFF the device and can also remotely control the intensity of light or frequency in LED/Buzzer respectively by controlling the voltage supplied. Here the user has to input voltage between 0-3.3 V and the code converts it into 8-bit range and feeds it to the module.
HTML code:
Bolt IoT Platform function change_voltage(){ var voltage = document.getElementById("input_voltage").value; var conv_voltage = 255*(voltage/3.3); var int = Math.floor(conv_voltage); analogWrite(0, int); document.getElementById("bit8").innerHTML=int; } </script>
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<h2>Bolt IOT Project</h2>
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<h1 style=" padding: 10px; background-color: white; color: green; outline: 2px solid black">Buzzer Control By Oggyee</h1>
<h3>aka "Yash Pradhan"</h3>
<div style="padding: 100 px; outline: 2px solid white; background-color: black; color: white">
<div style="padding: 10 px; margin: 10px">
<button style="padding: 10 px; margin: 10px" onclick="digitalWrite(0, 'HIGH');">ON</button>
<button style="padding: 10 px; margin: 10px" onclick="digitalWrite(0, 'LOW');">OFF</button>
</div>
<div style="padding: 10 px; margin: 10px" >Set Input Voltage(0 to 3.3):</div>
<input style="padding: 10 px; margin: 10px" type="number" id="input_voltage" style="margin: 5px">
<button style="padding: 10 px; margin: 10px" onclick="change_voltage();">Submit</button>
<h4>The 8 bit value for this Voltage: </h4>
<div style="padding: 10 px; margin: 10px" id="bit8"> Default Value is 255</div>
</div>
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