Circuit Documentation

Summary

This circuit integrates various sensors, actuators, and a display module with an ESP32 microcontroller. The primary components include an ESP32 (30 pin) microcontroller, multiple IR sensors, two ultrasonic sensors, two micro servos, a 16x2 I2C LCD, and several LEDs and a buzzer for output. The ESP32 serves as the central processing unit, interfacing with the IR and ultrasonic sensors to receive input signals. The micro servos are controlled via PWM signals, and the LEDs and buzzer provide visual and auditory feedback, respectively. The 16x2 I2C LCD displays relevant information. The circuit is designed for applications that require distance measurement, object detection, and feedback mechanisms.

Component List

ESP32 (30 pin)

• Microcontroller with WiFi and Bluetooth capabilities.
• 30 GPIO pins including analog inputs, UART, I2C, and PWM.

Micro servo 9G (x2)

• Small and lightweight servo motor.
• Controlled by PWM signal.

IR Sensor (x6)

• Infrared sensor for object detection.
• Outputs a digital signal when an object is detected.

Ultrasonic Sensor (x2)

• Sensor for measuring distance via ultrasonic waves.
• Consists of a trigger and echo pin.

16x2 I2C LCD

• Alphanumeric liquid crystal display.
• Communicates over I2C protocol.

LED: Two Pin (blue) (x5)

• Standard blue LED.
• Requires current limiting resistor.

Buzzer

• Emits an audible tone when powered.

Comment (x4)

• Placeholder for additional notes or labels (not an actual electronic component).

Wiring Details

ESP32 (30 pin)

• D34 connected to 16x2 I2C LCD SDA
• D35 connected to 16x2 I2C LCD SCL
• D32 connected to Ultrasonic Sensor Trigger
• D33 connected to Ultrasonic Sensor Echo
• D25, D26, D27, D14, D12, D13 connected to IR Sensor out pins
• GND connected to common ground net
• Vin connected to common VCC net
• D23, D22, D21, D19, D18, D5, TX2 connected to IR Sensor out pins or Buzzer PIN
• RX2 connected to Ultrasonic Sensor Echo
• D4 connected to Ultrasonic Sensor Trigger
• D2, D15 connected to Micro servo 9G PWM pins

Micro servo 9G

• GND connected to common ground net
• +5V connected to common VCC net
• PWM connected to ESP32 GPIO pins D2 and D15

IR Sensor

• out connected to various GPIO pins on the ESP32
• gnd connected to common ground net
• vcc connected to common VCC net

Ultrasonic Sensor

• +VCC connected to common VCC net
• Trigger connected to ESP32 GPIO pins D32 and D4
• Echo connected to ESP32 GPIO pins D33 and RX2
• GND connected to common ground net

16x2 I2C LCD

• GND connected to common ground net
• VCC connected to common VCC net
• SDA connected to ESP32 GPIO pin D34
• SCL connected to ESP32 GPIO pin D35

LED: Two Pin (blue)

• cathode connected to common ground net
• anode connected to various GPIO pins on the ESP32

Buzzer

• PIN connected to ESP32 GPIO pin D22
• GND connected to common ground net

Documented Code

No code has been provided for the microcontrollers in the circuit. The code would typically include initialization of the GPIO pins, setup for I2C communication, PWM signal generation for the servos, and logic for reading sensor inputs and driving the outputs (LEDs and buzzer). It would also handle the display output for the 16x2 I2C LCD.