In this lesson, we will show you how to make use Internet to monitor remote Smoke Sensor status.
We will use Osoyoo Mega-IoT Shield to connect Fire Sensor, LEDs and MEGA2560 MCU board. OSOYOO Advanced Board for Arduino MEGA2560 can work as a web server. Remote browser can access this web server to shows fire sensor real time status.
OSOYOO Advanced Board for Arduino MEGA2560 x 1
OSOYOO MEGA-IoT extension board x 1
USB Cable x 1
Red LED PnP module x 1
Green LED PnP module x 1
Gas Sensor PnP module x 1
3-pin PnP cable x 3
First please plug OSOYOO MEGA-IoT Extension Board into OSOYOO Advanced Board for Arduino MEGA2560:
Then connect the modules to the OSOYOO MEGA-IoT Extension Board with 3-pin PnP cables as below. (Jumper Cap should connect ESP8266 RX with A8, TX with A9)
Green LED module—D12
Red LED module—-D11
Gas Detection module—D3 (Make sure the Gas Detection module’s switch is put on D (NOT A) on the left side)
Step 1 Install latest IDE (If you have IDE version after 1.1.16, please skip this step)
Download IDE from https://www.arduino.cc/en/software, then install the software.
Step 2 WifiEsp Library Installation (if you have installed WifiESP library, please skip this step)
OSOYOO MEGA-IoT extension TX/RX pin to OSOYOO Advanced Board for Arduino MEGA2560 A9/A8 pin by default. So in sketch code, we need use Software Serial Port to communicate with ESP8266 (set A9 as TX and A8 as RX in softwareserial object).
To use this wifi shield in IDE, we need download WiFiEsp-master library from following link:
You need go to IDE ->Sketch ->Include Library ->Add ,Zip library to load above zip files into IDE.
Step 3 After installing above library, please download the main code from following link, unzip it, you will see a folder called “smarthome-lesson9”:
Step 4 After above operations are completed, connect OSOYOO MEGA2560 Board to PC with USB cable.
Step 5 IDE: Choose corresponding board type and port type for you project .
Step 6 IDE: Click file – Open, then choose code “smarthome-lesson9.ino” in the folder, load up the sketch onto your OSOYOO Advanced Board for Arduino MEGA2560.
Note: In the sketch, find line 24，25 as following:
char ssid = "******"; // your network SSID (name) char pass = "******"; // your network password
please replace the ****** with your correct wifi SSID and password, otherwise your project can not connect to Internet.
After loading the sketch to OSOYOO Advanced Board for Arduino MEGA2560 , open the serial monitor in the upper-right corner of IDE, you will see following result:
From the serial monitor , you can see the IP address of your MEGA2560 board in the read circle (in above picture, 192.168.50.102).
Then use your browser to visit the website http://mega2560-ip-address (in above case, http://192.168.50.102), you will see following result:
Above result means there is no Smoke signal is detected. The Red LED on the D13 pin of MEGA-IoT shield is off and Green LED is ON which shows the same result.
Now let’s use a gas lighter to leak some gas to fire sensor, the gas will trig fire signal to OSOYOO Advanced Board for Arduino MEGA2560. You will see the Green LED on IoT shield will be off and Red LED will turn ON.
Now check the web browser , after about 2 to 5 seconds, the browser will show following result.
DownLoad Url osoyoo.com
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NOTE: there is a polarity switch on the sensor board. My was in the revers state out of the box.
Hello, I’m in lesson 9 smoke detector. The detector is connected with D3, it doesn’t work, but in the youtube tutorial it’s connected with A3, how can I remove the cable so that I don’t damage something. What’s the wright connextion ?
I had to remove the cable of the motor (lesson 8) out of D3, to put the cable of the smoke detector …
Also the cable of the red led is in D13 (lesson 4) and now it must be in D11, how can I remove it or shouldn’t I do that …
Can anyone help please ?
Thanks verr much