Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, an RFID-RC522 module, a Tower Pro SG90 servo, an OLED display, several LEDs, resistors, a piezo buzzer, and a few other components. The circuit is designed to interface with various sensors and actuators, providing a comprehensive example of embedded system design.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

RFID-RC522

• Description: A low-cost RFID reader module.
• Pins: VCC (3.3V), RST, GND, IRQ, MISO, MOSI, SCK, SDA

Tower Pro SG90 Servo

• Description: A small and lightweight servo motor.
• Pins: Signal, +5V, GND

OLED 1.3"

• Description: A 1.3-inch OLED display.
• Pins: GND, VCC, SCL, SDA

LED: Two Pin (blue)

• Description: A blue LED.
• Pins: cathode, anode

LED: Two Pin (red)

• Description: A red LED.
• Pins: cathode, anode

LED: Two Pin (yellow)

• Description: A yellow LED.
• Pins: cathode, anode

Resistor (200 Ohms)

• Description: A resistor with a resistance of 200 Ohms.
• Pins: pin1, pin2

Piezo Buzzer

• Description: A piezoelectric buzzer.
• Pins: pin 1, pin 2

Wiring Details

Arduino UNO

• GND is connected to:

  • Piezo Buzzer pin 1
  • RFID-RC522 GND
  • OLED 1.3" GND
  • Tower Pro SG90 Servo GND

• 5V is connected to:

  • OLED 1.3" VCC
  • Tower Pro SG90 Servo +5V

• D5 is connected to:

  • Piezo Buzzer pin 2

• D4 is connected to:

  • Resistor pin1 (200 Ohms)

• D3 is connected to:

  • Resistor pin1 (200 Ohms)

• D2 is connected to:

  • Resistor pin1 (200 Ohms)

• 3.3V is connected to:

  • RFID-RC522 VCC (3.3V)

• A4 is connected to:

  • OLED 1.3" SDA

• A5 is connected to:

  • OLED 1.3" SCL

• D13 is connected to:

  • RFID-RC522 SCK

• D12 is connected to:

  • RFID-RC522 MISO

• D11 is connected to:

  • RFID-RC522 MOSI

• D10 is connected to:

  • RFID-RC522 SDA

• D9 is connected to:

  • RFID-RC522 RST

• D6 is connected to:

  • Tower Pro SG90 Servo Signal

RFID-RC522

• GND is connected to:

  • Arduino UNO GND

• VCC (3.3V) is connected to:

  • Arduino UNO 3.3V

• SCK is connected to:

  • Arduino UNO D13

• MISO is connected to:

  • Arduino UNO D12

• MOSI is connected to:

  • Arduino UNO D11

• SDA is connected to:

  • Arduino UNO D10

• RST is connected to:

  • Arduino UNO D9

Tower Pro SG90 Servo

• GND is connected to:

  • Arduino UNO GND

• +5V is connected to:

  • Arduino UNO 5V

• Signal is connected to:

  • Arduino UNO D6

OLED 1.3"

• GND is connected to:

  • Arduino UNO GND

• VCC is connected to:

  • Arduino UNO 5V

• SDA is connected to:

  • Arduino UNO A4

• SCL is connected to:

  • Arduino UNO A5

LED: Two Pin (blue)

• cathode is connected to:
  • Resistor pin2 (200 Ohms)

LED: Two Pin (red)

• cathode is connected to:
  • Resistor pin2 (200 Ohms)

LED: Two Pin (yellow)

• cathode is connected to:
  • Resistor pin2 (200 Ohms)

Resistor (200 Ohms)

• pin1 is connected to:

  • Arduino UNO D4 (for one resistor)
  • Arduino UNO D3 (for another resistor)
  • Arduino UNO D2 (for another resistor)

• pin2 is connected to:

  • LED: Two Pin (blue) cathode
  • LED: Two Pin (red) cathode
  • LED: Two Pin (yellow) cathode

Piezo Buzzer

• pin 1 is connected to:

  • Arduino UNO GND

• pin 2 is connected to:

  • Arduino UNO D5

Documented Code

Arduino UNO Code

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

This code is a basic template for the Arduino UNO, with empty setup and loop functions. You can add your specific initialization and main code logic within these functions.