In this lesson, we will show how to use the Osoyoo IoT Kit to build a RFID access control system. Before starting this lesson, you can get more information about the RFID module from this link.
First, please plug OSOYOO MEGA-IoT Extension Board into MEGA2560 board:
Build the circuit as below:
RFID Module – RFID Port
Please confirm whether the wiring is correct according to the VCC and GND pins
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:
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 18,19 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.
After completing the above steps and uploading the code, open the IDE serial monitor, you can see that the system is initialized successfully, and then put your RFID card in the RDID module recognition area, you will see your serial monitor will display your The card information is as follows:
RFID START!Find the card!Card type: UnknownThe card's number is : 71BA2F2ECA
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 your APP
Open your project page and press the “+” button to add the “LCD” Widget.
Widget settings:
INPUT ADVANCED INPUT V11
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.
After you finished all above operations, approximate the RFID card or the keychain to the reader. Open the Serial Monitor and you will get some informations of the card. If you update your card information to the code, when you use the corresponding card, Let the reader and the tag closer , you will see that the corresponding name is printed in the serial monitor, and LED will be lit for a second.
