Circuit Documentation

Summary

This document provides a detailed overview of a circuit that integrates an Arduino Leonardo (Rev3b) microcontroller with various sensors and modules, including an HC-SR04 Ultrasonic Sensor, a PIR Sensor, a buzzer, and a Sim800l module. The circuit is designed to interface these components for a specific application, leveraging the Arduino Leonardo for control and data processing.

Component List

Arduino Leonardo (Rev3b)

• Description: A microcontroller board based on the ATmega32u4.
• Pins: D0/RX, D1/TX, D2/SDA, D3 PWM/SCL, D4/A6, D5 PWM, D6 PWM/A7, D7, n.c., IOREF, RESET, 3V3, 5V, GND, VIN, A0, A1, A2, A3, A4, A5, D8/A8, D9 PWM/A9, D10 PWM/A10, D11 PWM, D12/A11, D13 PWM, AREF, SDA, SCL

HC-SR04 Ultrasonic Sensor

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

PIR Sensor

• Description: A sensor used for detecting motion.
• Pins: GND, VCC, Data

Buzzer

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

Sim800l

• Description: A GSM/GPRS module used for communication.
• Pins: NET, RST, VCC, RXD, TXD, GND

Wiring Details

Arduino Leonardo (Rev3b)

• 5V:

  • Connected to VCC of HC-SR04 Ultrasonic Sensor
  • Connected to VCC of PIR Sensor
  • Connected to VCC of Sim800l

• GND:

  • Connected to GND of HC-SR04 Ultrasonic Sensor
  • Connected to GND of PIR Sensor
  • Connected to GND of Sim800l
  • Connected to GND of Buzzer

• D2/SDA:

  • Connected to RXD of Sim800l

• D3 PWM/SCL:

  • Connected to TXD of Sim800l

• D6 PWM/A7:

  • Connected to Data of PIR Sensor

• D9 PWM/A9:

  • Connected to TRIG of HC-SR04 Ultrasonic Sensor

• D10 PWM/A10:

  • Connected to ECHO of HC-SR04 Ultrasonic Sensor

• D12/A11:

  • Connected to PIN of Buzzer

HC-SR04 Ultrasonic Sensor

• VCC:

  • Connected to 5V of Arduino Leonardo

• GND:

  • Connected to GND of Arduino Leonardo

• TRIG:

  • Connected to D9 PWM/A9 of Arduino Leonardo

• ECHO:

  • Connected to D10 PWM/A10 of Arduino Leonardo

PIR Sensor

• VCC:

  • Connected to 5V of Arduino Leonardo

• GND:

  • Connected to GND of Arduino Leonardo

• Data:

  • Connected to D6 PWM/A7 of Arduino Leonardo

Buzzer

• PIN:

  • Connected to D12/A11 of Arduino Leonardo

• GND:

  • Connected to GND of Arduino Leonardo

Sim800l

• VCC:

  • Connected to 5V of Arduino Leonardo

• GND:

  • Connected to GND of Arduino Leonardo

• RXD:

  • Connected to D2/SDA of Arduino Leonardo

• TXD:

  • Connected to D3 PWM/SCL of Arduino Leonardo

Code

No code is provided for this circuit.

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This document provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and code documentation. This should serve as a useful reference for understanding and replicating the circuit.