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.
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).
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:
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:
Step 2 After above operations are completed, connect OSOYOO MEGA2560 Board to PC with USB cable.
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:
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.
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.
|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|
DownLoad Url osoyoo.com