Circuit Documentation

Summary

This circuit involves a Raspberry Pi 4B controlling three LEDs (red, green, and yellow), a piezo buzzer, and an HC-SR04 ultrasonic sensor. The Raspberry Pi is used to drive the LEDs and the buzzer, and to interface with the ultrasonic sensor for distance measurement.

Component List

1. LED: Two Pin (red)

   • Pins: cathode, anode
   • Description: A red LED used for visual indication.

2. LED: Two Pin (green)

   • Pins: cathode, anode
   • Description: A green LED used for visual indication.

3. LED: Two Pin (yellow)

   • Pins: cathode, anode
   • Description: A yellow LED used for visual indication.

4. HC-SR04 Ultrasonic Sensor

   • Pins: VCC, TRIG, ECHO, GND
   • Description: An ultrasonic sensor used for distance measurement.

5. Raspberry Pi 4B

   • Pins: 3V3, 5V, GPIO2, GPIO3, GND, GPIO4, GPIO14, GPIO15, GPIO17, GPIO18, GPIO27, GPIO22, GPIO23, GPIO24, GPIO10, GPIO9, GPIO25, GPIO11, GPIO8, GPIO7, ID_SD, GPIO5, GPIO6, GPIO12, GPIO13, GPIO19, GPIO16, GPIO26, GPIO20, GPIO21, ID_SC, TR01_TAP, TR00_TAP, TR03_TAP, TR02_TAP, RUN, GLOBAL_EN
   • Description: A single-board computer used to control the LEDs, buzzer, and interface with the ultrasonic sensor.

6. Piezo Buzzer

   • Pins: pin 1, pin 2
   • Description: A piezoelectric buzzer used for sound indication.

Wiring Details

LED: Two Pin (red)

• Anode: Connected to Raspberry Pi 4B GPIO21
• Cathode: Connected to Raspberry Pi 4B GND

LED: Two Pin (green)

• Anode: Connected to Raspberry Pi 4B GPIO16
• Cathode: Connected to Raspberry Pi 4B GND

LED: Two Pin (yellow)

• Anode: Connected to Raspberry Pi 4B GPIO20
• Cathode: Connected to Raspberry Pi 4B GND

HC-SR04 Ultrasonic Sensor

• VCC: Connected to Raspberry Pi 4B 5V
• TRIG: Connected to Raspberry Pi 4B GPIO23
• ECHO: Connected to Raspberry Pi 4B GPIO24
• GND: Connected to Raspberry Pi 4B GND

Raspberry Pi 4B

• GPIO16: Connected to LED (green) anode
• GPIO20: Connected to LED (yellow) anode
• GPIO21: Connected to LED (red) anode
• GPIO18: Connected to Piezo Buzzer pin 1
• GND: Connected to LED (red) cathode, LED (green) cathode, LED (yellow) cathode, Piezo Buzzer pin 2, and HC-SR04 Ultrasonic Sensor GND
• 5V: Connected to HC-SR04 Ultrasonic Sensor VCC
• GPIO23: Connected to HC-SR04 Ultrasonic Sensor TRIG
• GPIO24: Connected to HC-SR04 Ultrasonic Sensor ECHO

Piezo Buzzer

• Pin 1: Connected to Raspberry Pi 4B GPIO18
• Pin 2: Connected to Raspberry Pi 4B GND

Code

No code provided for this circuit.

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This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and a section for code (if any). Each component is described with its connections to ensure clarity and ease of understanding.