Circuit Documentation

Summary of the Circuit

This circuit is designed to interface an ESP32 microcontroller with a set of sensors and actuators. It includes a power supply module, an ultrasonic distance sensor, an infrared sensor, and a servo motor. The ESP32 reads data from the sensors and controls the servo motor based on the sensor inputs. The power supply module regulates the voltage from a 9V battery to provide a stable 5V output for the sensors and the ESP32.

Component List

9V Battery

• Description: Provides the power source for the circuit.
• Pins: + (positive terminal), - (negative terminal).

LM340T5 7805 Voltage Regulator

• Description: Regulates the input voltage to a stable 5V output.
• Pins: Vout (regulated 5V output), Vin (input voltage), GND (ground).

ESP32 (30 pin)

• Description: A microcontroller with WiFi and Bluetooth capabilities, used as the main processing unit of the circuit.
• Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, Vin, D23, D22, TX0, RX0, D21, D19, D18, D5, TX2, RX2, D4, D2, D15, 3V3.

HC-SR04 Ultrasonic Distance Sensor (Wokwi Compatible)

• Description: Measures distances by emitting ultrasonic waves and measuring the time taken for the echo to return.
• Pins: VCC (power supply), TRIG (trigger input), ECHO (echo output), GND (ground).

IR Sensor

• Description: Detects infrared light, often used in proximity and object detection.
• Pins: out (output signal), gnd (ground), vcc (power supply).

Servo

• Description: A motor capable of precise position control.
• Pins: gnd (ground), vcc (power supply), pulse (control signal).

Wiring Details

9V Battery

• + connected to Vin of LM340T5 7805 Voltage Regulator.
• - connected to GND of LM340T5 7805 Voltage Regulator and GND of HC-SR04 Ultrasonic Distance Sensor.

LM340T5 7805 Voltage Regulator

• Vin connected to + of 9V Battery.
• GND connected to - of 9V Battery, GND of HC-SR04 Ultrasonic Distance Sensor.
• Vout connected to VCC of HC-SR04 Ultrasonic Distance Sensor.

ESP32 (30 pin)

• D14 connected to out of IR Sensor.
• D13 connected to pulse of Servo.
• GND connected to gnd of Servo and gnd of IR Sensor.
• Vin connected to vcc of Servo.
• D5 connected to ECHO of HC-SR04 Ultrasonic Distance Sensor.
• D15 connected to TRIG of HC-SR04 Ultrasonic Distance Sensor.
• 3V3 connected to vcc of IR Sensor.

HC-SR04 Ultrasonic Distance Sensor (Wokwi Compatible)

• VCC connected to Vout of LM340T5 7805 Voltage Regulator.
• TRIG connected to D15 of ESP32.
• ECHO connected to D5 of ESP32.
• GND connected to GND of LM340T5 7805 Voltage Regulator.

IR Sensor

• out connected to D14 of ESP32.
• gnd connected to GND of ESP32.
• vcc connected to 3V3 of ESP32.

Servo

• gnd connected to GND of ESP32.
• vcc connected to Vin of ESP32.
• pulse connected to D13 of ESP32.

Documented Code

No code has been provided for the microcontroller. The documentation of the code would typically include a description of the functionality, setup and loop functions, and any functions or libraries used to interface with the sensors and actuators. Since no code is available, this section cannot be completed. If code becomes available, it should be documented here with comments explaining each section and its purpose in the overall operation of the circuit.