Aswathi H S
Published © GPL3+

SmartTemp Watcher

Monitor temperature in real-time using LM35 & Bolt IoT. View live data remotely via Bolt Cloud with gauge chart visualization.

BeginnerFull instructions provided2 hours22
SmartTemp Watcher

Things used in this project

Hardware components

Bolt WiFi Module
Bolt IoT Bolt WiFi Module
×1
lm35 dz
×1

Software apps and online services

Bolt IoT Android App
Bolt IoT Android App
Bolt Cloud
Bolt IoT Bolt Cloud

Hand tools and fabrication machines

Breadboard, 170 Pin
Breadboard, 170 Pin
Premium Female/Male Extension Jumper Wires, 40 x 6" (150mm)
Premium Female/Male Extension Jumper Wires, 40 x 6" (150mm)

Story

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Schematics

SmartTemp Watcher

Hardware Components Required
Bolt IoT WiFi Module

LM35 Temperature Sensor

Jumper Wires (Male-to-Female or Male-to-Male based on your setup)

Breadboard (optional, but recommended for neat setup)

USB cable (to power Bolt Module)

Connection of LM35 to Bolt wiifi module
VCC: Power supply (Connect to 3.3V)

OUT: Analog Output (Connect to A0)

GND: Ground (Connect to GND)

Code

SmartTemp Watcher

JavaScript
This script is part of Bolt Cloud's Visualization Feature, which allows you to display sensor readings as live charts (like gauge, line, bar, etc.). This particular code is for displaying temperature data from the LM35 sensor on a gauge-style chart.

Go to Bolt Cloud: cloud.boltiot.com

Create a Product:

Link your Bolt Device to this product

Click "Code" under the Product and replace the default JS code with your code (below)

Deploy configuration and view live sensor data on the dashboard
setChartLibrary('google-chart');
setChartTitle('LM35 Sensor Data');
setChartType('gauge');
setAxisName('Temp °C');
setDimensions(400,400);
setMaxValue(150);
setGreen(0,40);
setYellow(41,100);
setRed(101,151);
mul(0.0977);
plotChart('lm35_temp');

Credits

Aswathi H S
1 project • 0 followers
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Related channels and tags
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