You can download the user manual from:  

https://osoyoo.com/manual/2021005400.pdf

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In this lesson, we will use this IoT kit to remotely monitor the home environmental temperature and humidity, and display the data to the Blynk APP.

HARDWARE

•  Osoyoo Mega2560 (fully compatible with Arduino MEGA2560) x 1
• OSOYOO IoT WIFI Shield x 1
• DHT11 Temperature/Sensor Module x 1
• LCD Display Module x 1
• USB Cable x 1
• 3-pin PnP Cable x 1
• 4-pin PnP Cable x 1

SOFTWARE

• • Arduino IDE (version 1.6.4+)
  • Blynk Library
  • BlynkESP8266 Library
  • DHT11 library
  • Adafruit library
  • LCD_I2C library

  

  First, please plug OSOYOO MEGA-IoT Extension Board into MEGA2560 board:

  

  Build the circuit as below:

  Here we connect the signal pin (S) to digital pin D5.

  

  

   

  Prerequisite:
  You need to install Local Blynk Server, Blynk APP, Arduino IDE, Blynk Libraries before running the code of this lesson.  We suppose you have installed them in previous lessons.  If you haven’t done these installations, please read following contents in lesson2-1 link:

  https://osoyoo.com/2021/04/29/osoyoo-smart-home-iot-blynk-lesson-2-1-simple-control/#prerequisite

  You also need to download following DHT11,  Adafruit_Sensor_Master and LCD_I2C libraries  from following link:

  • DHT11 library
  • Adafruit Sensor Master library
  • LiquidCrystalDisplay_I2C library

  In Arduino IDE, click Sketch->Include Library ->Add .ZIP library and upload the library zip files to the IDE. 

  

  Download and Edit Lesson2-3 Arduino Code
  Step 1 ) After installing above library, please download the code from following link, unzip it:
  https://osoyoo.com/driver/Smart_House_IoT_Learning_Kit_V2.0_code/Lesson2-3.zip

  Step 2) After above operations are completed, connect OSOYOO MEGA2560 Board to PC with USB cable.

  Notice: Shut off your battery or unplug your power adapter when upload sketch code to Arduino.

  

  Step 3) Open Arduino IDE:  Choose corresponding board type and port type for you project.

  

  Step 4)  Arduino IDE:  Click file – Open, then choose code in the folder, load up the  sketch onto your Arduino.

  

  Note: In the  sketch line 14, find these lines as following:

  char auth[] =”0ByWpc50cmOJ5O6OyHMaK4OSHkDvUeI-”;
  char server_ip[]=”192.168.1.81″; // replace this line with your Blynk Server IP addres
  

  Replace 0ByWpc50cmOJ5O6OyHMaK4OSHkDvUeI- with your local Blynk Token.
  Replace 192.168.1.81 with your local Blynk Server LAN IP address.
  If you don’t know how to get token and Server IP address, read this article.

  In   lines 27,28 and replace *** with your wifi ssid/password

  char ssid[] = "***";//replace this line with your wifi ssid
  char pass[] = "***"; //replace this line with your wifi password
  
  Upload the sketch to the board. Wait until you see something like this:

  Done uploading

  Now open your Serial Monitor, you will see Arduino is trying to talk to Blynk server. After 20 to 30 seconds, your Serial monitor will finally shows Arduino’s IP address and a “Ready (ping: 25ms)” ending message.

  Congratulations! You are all ready! Your hardware is now connected to the Blynk server.

  Add a Widget in Blynk legacy APP

  Open your project page and press the “+” button to add  the “LCD” Widget.

  Widget settings:

  Name Column: You can name your widget, whatever you like.

  PIN  V5, value: H
  PIN  V6, value: T

  Here, you can try to change the LCD Widget to Labeled Value Widget by yourself, so that you can add the symbols of the corresponding data, but you need more Blynk energy.

  

  

  

  After you finished all above operations, press the “▷“ button. This will switch you from EDIT mode to PLAY mode where you can interact with the hardware.

  While in PLAY mode, you won’t be able to drag or set up new widgets, press “□” and get back to EDIT mode.

  

  Now, you can see the temperature and humidity remotely!

  If you find the device is offline, please check your code, wiring and app settings, and try again.

   

  No.	Picture	Device	Qty.	Link
  1		OSOYOO MEGA2560 Board	1	Click here to buy
  2		OSOYOO MEGA-IoT Extension Board	1	Click here to buy
  3		Photosensitive Sensor	1	Click here to buy
  4		Temp & Hum Sensor	1	Click here to buy
  5		OSOYOO Active Buzzer Module	1	Click here to buy
  6		Flame Detection Sensor	1	Click here to buy
  7		Fan Motor Module	1	Click here to buy
  8		Micro Servo Motor	1	Click here to buy
  9		RGB Module	1	Click here to buy
  10		Ultrasonic Sensor	1	Click here to buy
  11		PIR Motion Sensor	1	Click here to buy
  12		Microphone Module	1	Click here to buy
  13		1602 I2C LCD Screen	1	Click here to buy
  14		RFID Module	1	Click here to buy
  15		White LED Module	1	Click here to buy
  16		Red LED Module	1	Click here to buy
  17		Colorful Light	1	Click here to buy
  18		Red Button Module	1	Click here to buy
  19		Blue Button Module	1	Click here to buy
  20		Philips Screwdriver	1	Click here to buy