Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP8266 microcontroller, a red and green LED, a buzzer, two resistors, and an RFID-RC522 module. The circuit is designed to control the LEDs and buzzer based on inputs from the RFID module, with the ESP8266 serving as the central controller.

Component List

ESP8266

• Description: A low-cost Wi-Fi microchip with full TCP/IP stack and microcontroller capability.
• Pins: 3V, G, D8, D7, D6, D5, D4, D3, D2, D1, D0, A0, S3, S2, S1, SC, S0, SK, EN, VIN, RST, VU

LED: Two Pin (red)

• Description: A red light-emitting diode.
• Pins: cathode, anode

LED: Two Pin (green)

• Description: A green light-emitting diode.
• Pins: cathode, anode

Buzzer

• Description: An audio signaling device.
• Pins: PIN, GND

Resistor (220 Ohms)

• Description: A resistor with a resistance of 220 Ohms.
• Pins: pin1, pin2

RFID-RC522

• Description: A low-cost RFID module that operates at 13.56 MHz.
• Pins: VCC (3.3V), RST, GND, IRQ, MISO, MOSI, SCK, SDA

Wiring Details

ESP8266

• D1 is connected to the anode of the red LED.
• D0 is connected to the anode of the green LED.
• D2 is connected to the PIN of the buzzer.
• D3 is connected to the RST of the RFID-RC522.
• D4 is connected to the SDA of the RFID-RC522.
• D5 is connected to the SCK of the RFID-RC522.
• D6 is connected to the MISO of the RFID-RC522.
• D7 is connected to the MOSI of the RFID-RC522.
• G is connected to the GND of the buzzer and the GND of the RFID-RC522.
• 3V is connected to the VCC (3.3V) of the RFID-RC522.

LED: Two Pin (red)

• anode is connected to D1 of the ESP8266.
• cathode is connected to pin1 of a 220 Ohm resistor.

LED: Two Pin (green)

• anode is connected to D0 of the ESP8266.
• cathode is connected to pin1 of a 220 Ohm resistor.

Buzzer

• PIN is connected to D2 of the ESP8266.
• GND is connected to G of the ESP8266.

Resistor (220 Ohms)

• pin1 of one resistor is connected to the cathode of the red LED.
• pin2 of the same resistor is connected to G of the ESP8266.
• pin1 of the other resistor is connected to the cathode of the green LED.
• pin2 of the same resistor is connected to G of the ESP8266.

RFID-RC522

• RST is connected to D3 of the ESP8266.
• SDA is connected to D4 of the ESP8266.
• SCK is connected to D5 of the ESP8266.
• MISO is connected to D6 of the ESP8266.
• MOSI is connected to D7 of the ESP8266.
• GND is connected to G of the ESP8266.
• VCC (3.3V) is connected to 3V of the ESP8266.

Code

No code is provided for this circuit.