You can download the user manual from:  

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In this lesson we will learn how to use this kit to make a smart light. In the dark night, the smart light will turn on  when it detects human movement. During the day or no human activity is detected at night, the light will automatically turn off. Of course, you can also use your mobile phone to control the smart light.

HARDWARE

SOFTWARE

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

Build the circuit as below:

PIR sensor — D6 ,

light detect sensor —A0 port,

LED Module — D8 port.

Note: Make sure the light sensor is on “A” mode(A for Analog,  flip the switch on the sensor module to the letter “A” side).

Prerequisite:
You need to install Local Blynk Server, Blynk APP, Arduino IDE, Blynk Libraries before running the code of this lesson. 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

If you have installed above libraries, please go to next stage:
Download and Edit Lesson3-2 Arduino Code
Step 1 Download the code from following link, unzip it:
https://osoyoo.com/driver/Smart_House_IoT_Learning_Kit_V2.0_code/Lesson3-2.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.

You need to edit the code as following:

**********************************************************

Note: In the  sketch, find these code in line 13,14 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 17,18 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

please replace the *** with your correct wifi SSID and password, otherwise your project can not connect to Internet.

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 “Button” Widget.

Button Widget settings:

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

OUTPUT: D8 |  0-1

MODE: We choose the Switch mode here.

You can modify other options according to your own habits or keep them as default.

The most important parameter to set is PIN .  Choose “D8 : 0~1; SWITCH Mode”

Then back to the project page. and press the “” button to start your project.

When the value from light sensor is low, the smart light will turn on  when it detects human movement.  Otherwise, the smart light will automatically turn off.

Of course, you can also use your Blynk APP to control the night light.


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