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In this lesson, we will show how to use the OSOYOO IoT  APP to make a remote-controllable ambient light. We can change   color of the light at home through the mobile APP to make more colorful moments.



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

RGB  module — RGB port


Before you running the code, please make sure have already download and installed following libraries. If you have installed them in lesson 1, please skip this step.
WifiEsp-master library, download link:
OsoyooIOT Library, Download link:

Download OSOYOO IoT APP  by searching OSOYOO iot udp robot car app from Apple Store(iPhone/iPad) or Google Play Store(Android device)

Download and Edit Lesson2-7 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.

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:

In  the sketch code 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 the IP address of your Arduino.

Now open your OSOYOO IoT UDP APP (if you don’t have it, search OSOYOO IoT UDP Robot APP in Apple Store or Google Play Store).
Then select Setting icon to set the Arduino IP address as following, click Save button keep the change.

Now you can change the color of the LED:
press F1 you will turn on RED color, press F5 will turn off RED color

press F2 you will turn on Green color, press F6 will turn off Green color

press F3 you will turn on Blue color, press F7 will turn off Blue color

You can combine these 6 keys and to create different colors.

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 b