Circuit Documentation
Summary
This circuit incorporates a variety of components including an Arduino Nano microcontroller, an RFID-RC522 module, an LCM1602 IIC interface adapter for an LCD, a 16X2 LCD display, two LEDs (red and green), and a pushbutton. The Arduino Nano serves as the central processing unit, interfacing with the RFID module for tag reading capabilities and controlling the display and LEDs. The pushbutton provides user input, while the LEDs offer visual feedback. The LCM1602 IIC module is used to simplify the connection between the Arduino Nano and the 16X2 LCD display, reducing the number of required I/O pins for display control.
Component List
Arduino Nano
- Microcontroller board based on the ATmega328P
- Offers a variety of digital and analog I/O pins
RFID-RC522
- RFID reader/writer module
- Operates at 13.56 MHz for communication with RFID tags
LCM1602 IIC
- I2C interface adapter for LCD displays
- Reduces the number of GPIO pins needed to control the LCD
16X2 LCD
- Alphanumeric liquid crystal display
- Capable of displaying two lines of 16 characters each
Pushbutton
- A simple switch mechanism for user input
- Typically used to initiate an action when pressed
LED: Two Pin (red)
- A red light-emitting diode
- Used for visual indication
LED: Two Pin (green)
- A green light-emitting diode
- Used for visual indication
Wiring Details
Arduino Nano
3V3connected to RFID-RC522VCC (3.3V)D9connected to RFID-RC522RSTGNDconnected to PushbuttonPin 2, RFID-RC522GND, both LEDcathodepins, and LCM1602 IICGNDD12/MISOconnected to RFID-RC522MISOD11/MOSIconnected to RFID-RC522MOSID13/SCKconnected to RFID-RC522SCKD10connected to RFID-RC522SDAD4connected to PushbuttonPin 3D5connected to LED: Two Pin (green)anodeD6connected to LED: Two Pin (red)anode5Vconnected to LCM1602 IICVCCA5connected to LCM1602 IICSDAA4connected to LCM1602 IICSCL
RFID-RC522
- Connections as specified above with the Arduino Nano.
LCM1602 IIC
GNDconnected to Arduino NanoGNDVCCconnected to Arduino Nano5VSDAconnected to Arduino NanoA5SCLconnected to Arduino NanoA4- Other pins connected to corresponding pins on the 16X2 LCD as per the net list.
16X2 LCD
- Pins connected to corresponding pins on the LCM1602 IIC as per the net list.
Pushbutton
Pin 2connected to Arduino NanoGNDPin 3connected to Arduino NanoD4
LED: Two Pin (red)
cathodeconnected to Arduino NanoGNDanodeconnected to Arduino NanoD6
LED: Two Pin (green)
cathodeconnected to Arduino NanoGNDanodeconnected to Arduino NanoD5
Documented Code
Arduino Nano Code (sketch.ino)
void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
Additional Notes (documentation.txt)
No additional code documentation was provided.