Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various sensors, servos, LEDs, resistors, and an ESP32 microcontroller. The circuit is designed to interface multiple components for a variety of functionalities, including motion detection, distance measurement, and visual indication using LEDs.

Component List

1. Tower Pro SG90 Servo

   • Pins: Signal, +5V, GND
   • Description: A small and lightweight servo motor used for precise control of angular position.

2. HC-SR04 Ultrasonic Sensor

   • Pins: VCC, TRIG, ECHO, GND
   • Description: A sensor used for measuring distance by using ultrasonic waves.

3. PIR/Motion Sensor

   • Pins: GND, OUTPUT, VCC
   • Description: A sensor used to detect motion by measuring infrared radiation.

4. Resistor (220 Ohms)

   • Pins: pin1, pin2
   • Description: A passive electrical component that provides resistance to the flow of current.

5. LED: Two Pin (green)

   • Pins: cathode, anode
   • Description: A light-emitting diode used for visual indication.

6. ESP32

   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, VIN, 3V3, D15, D2, D4, RX2, TX2, D5, D18, D19, D21, RX0, TX0, D22, D23, BOOT
   • Description: A low-cost, low-power system on a chip microcontroller with integrated Wi-Fi and dual-mode Bluetooth.

Wiring Details

Tower Pro SG90 Servo

• Servo 1

  • Signal: Connected to ESP32 pin D19
  • +5V: Connected to 3V3 (ESP32)
  • GND: Connected to GND (ESP32)

• Servo 2

  • Signal: Connected to ESP32 pin D21
  • +5V: Connected to 3V3 (ESP32)
  • GND: Connected to GND (ESP32)

HC-SR04 Ultrasonic Sensor

• Sensor 1

  • VCC: Connected to 3V3 (ESP32)
  • TRIG: Connected to ESP32 pin D27
  • ECHO: Connected to ESP32 pin D14
  • GND: Connected to GND (ESP32)

• Sensor 2

  • VCC: Connected to 3V3 (ESP32)
  • TRIG: Connected to ESP32 pin D12
  • ECHO: Connected to ESP32 pin D13
  • GND: Connected to GND (ESP32)

PIR/Motion Sensor

• Sensor 1

  • GND: Connected to GND (ESP32)
  • OUTPUT: Connected to ESP32 pin D5
  • VCC: Connected to 3V3 (ESP32)

• Sensor 2

  • GND: Connected to GND (ESP32)
  • OUTPUT: Connected to ESP32 pin D18
  • VCC: Connected to 3V3 (ESP32)

Resistor (220 Ohms)

• Resistor 1

  • pin1: Connected to ESP32 pin D15
  • pin2: Connected to anode of LED 3

• Resistor 2

  • pin1: Connected to ESP32 pin D4
  • pin2: Connected to anode of LED 1

• Resistor 3

  • pin1: Connected to anode of LED 2
  • pin2: Connected to ESP32 pin D2

LED: Two Pin (green)

• LED 1

  • cathode: Connected to GND (ESP32)
  • anode: Connected to pin2 of Resistor 2

• LED 2

  • cathode: Connected to GND (ESP32)
  • anode: Connected to pin1 of Resistor 3

• LED 3

  • cathode: Connected to GND (ESP32)
  • anode: Connected to pin2 of Resistor 1

ESP32

• Power Connections
  • 3V3: Connected to VCC of all sensors and servos
  • GND: Connected to GND of all sensors, servos, and LEDs

Code

No code is provided for this circuit.

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This document provides a comprehensive overview of the components and their connections in the circuit. Each component is described, and detailed wiring instructions are provided to ensure correct assembly.