Circuit Documentation

Summary

The circuit in question appears to be a multifunctional system incorporating an ESP32 microcontroller as the central processing unit. The ESP32 is interfaced with several peripheral devices, including an RFID-RC522 module for RFID communication, a servo motor for actuation, an MKE-M08 LCD2004 module with I2C communication for display purposes, multiple TCRT 5000 IR sensors for object detection or line tracking, a heat flame sensor for detecting fire or high temperatures, and a piezo speaker for audio feedback.

Component List

ESP32 38 PINS

• Description: A microcontroller with Wi-Fi and Bluetooth capabilities, featuring a wide range of GPIO pins.
• Pins: GND, G23, G22, TXD, RXD, G21, G19, G18, G5, G17, G16, G4, G0, G2, G15, SDI, SD0, CLK, 3V3, EN, SP, SN, G34, G35, G32, 33, G25, G26, G27, G14, G12, G13, SD2, SD3, 5V

RFID-RC522

• Description: An RFID reader/writer module for contactless communication using 13.56 MHz.
• Pins: VCC (3.3V), RST, GND, IRQ, MISO, MOSI, SCK, SDA

Servo

• Description: An electromechanical device for precise control of angular position.
• Pins: gnd, vcc, pulse

MKE-M08 LCD2004 I2C Module

• Description: A 20x4 character LCD display with an I2C interface module.
• Pins: GND, 5V, SDA, SCL

TCRT 5000 IR SENSOR

• Description: An infrared reflective sensor that includes both an IR emitter and phototransistor in a single package.
• Pins: VCC, GND, DO, AO

Heat Flame Sensor

• Description: A sensor for detecting fire or high temperatures.
• Pins: AO, DO, GND, VCC

Piezo Speaker

• Description: An electronic device that can produce sound when an electrical signal is applied.
• Pins: pin1, pin2

Wiring Details

ESP32 38 PINS

• GND connected to the ground of all components.
• G23 connected to RFID-RC522 MOSI.
• G22 connected to MKE-M08 LCD2004 SCL.
• G21 connected to MKE-M08 LCD2004 SDA.
• G19 connected to RFID-RC522 MISO.
• G18 connected to RFID-RC522 SCK.
• G17 connected to RFID-RC522 RST.
• G16 connected to RFID-RC522 SDA.
• G2 connected to Piezo Speaker pin2.
• 3V3 connected to VCC of Servo and all TCRT 5000 IR Sensors, and RFID-RC522.
• G32 connected to TCRT 5000 IR Sensor AO (ca25139f-4795-4714-8d17-c9fe921082e7).
• 33 connected to TCRT 5000 IR Sensor AO (15433edc-f2d9-4a20-93a9-6cea0f3ae166).
• G25 connected to TCRT 5000 IR Sensor AO (092ebf37-f00a-48e0-a771-eb5aea358b9f).
• G26 connected to TCRT 5000 IR Sensor AO (531c5c72-bee4-4304-8adc-69f60f22b23d).
• G27 connected to Servo pulse.
• G14 connected to Heat Flame Sensor AO.
• G13 connected to TCRT 5000 IR Sensor AO (b9a18541-5d0c-4354-af98-e6632fa5fc3a).
• 5V connected to MKE-M08 LCD2004 5V.

RFID-RC522

• VCC (3.3V) connected to ESP32 3V3.
• RST connected to ESP32 G17.
• GND connected to ESP32 GND.
• MISO connected to ESP32 G19.
• MOSI connected to ESP32 G23.
• SCK connected to ESP32 G18.
• SDA connected to ESP32 G16.

Servo

• gnd connected to ESP32 GND.
• vcc connected to ESP32 3V3.
• pulse connected to ESP32 G27.

MKE-M08 LCD2004 I2C Module

• GND connected to ESP32 GND.
• 5V connected to ESP32 5V.
• SDA connected to ESP32 G21.
• SCL connected to ESP32 G22.

TCRT 5000 IR SENSOR

• VCC connected to ESP32 3V3.
• GND connected to ESP32 GND.
• DO not connected in this documentation.
• AO connected to various GPIOs on the ESP32 (G32, 33, G25, G26, G13).

Heat Flame Sensor

• AO connected to ESP32 G14.
• DO not connected in this documentation.
• GND connected to ESP32 GND.
• VCC connected to ESP32 3V3.

Piezo Speaker

• pin1 connected to ESP32 GND.
• pin2 connected to ESP32 G2.

Documented Code

No code was provided for the microcontrollers in the circuit. Therefore, this section is left blank until the relevant code is supplied.