Humidity and Temperature Monitoring System

Step 1: Connect Bolt to Arduino/Boltduino

Connect the Bolt module using either direct pins (for Boltduino) or four male-to-male Berg pin wires (for Arduino UNO).

Step 2: Connect DHT11 Sensor

Connect the DHT11 temperature and humidity sensor to the Boltduino/Arduino following the schematic diagram below.

Step 1: Install Required Libraries

Three libraries are required:

• BoltIoT-Arduino-Helper
• Adafruit_Sensor
• DHT-Sensor-Library

Download the ZIP files from GitHub, then in the Arduino IDE navigate to Sketch > Include Library > Add .ZIP Library... and select each downloaded file.

Step 2: Upload Code to Arduino

Go to File > Examples > BoltIoT-Arduino-Helper > DHT2Cloud. Connect the Boltduino/Arduino to your PC and click Upload.

CAUTION: For Arduino Uno users, remember to disconnect the Bolt module from the Arduino while uploading the code.

Step 3: Create New Product on Bolt Cloud

Create an account on Bolt Cloud and link your Bolt WiFi module. Make sure to select Input Devices and UART options when creating the product.

Step 4: Configure Product

Name the code file with a .js file extension and enter the following visualization code:

var lineGraph1 = new boltGraph();
lineGraph1.setChartType("lineGraph");
lineGraph1.setAxisName('X-Axis Name','Temperature->');
lineGraph1.plotChart('time_stamp','Temperature');
var lineGraph2 = new boltGraph();
lineGraph2.setChartType("lineGraph");
lineGraph2.setAxisName('X-Axis Name','Humidity->');
lineGraph2.plotChart('time_stamp','Humidity');

Step 5: Link Device and Deploy

Link your Bolt device to the new product and click "Deploy Configurations."

Step 6: View Device

The Cloud polls the device for data every 5 minutes, so it would be best to leave the system running for about 20 to 25 minutes before you check the results.