Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino Nano microcontroller, various LEDs, a piezo speaker, an NRF24L01 wireless module, a toggle switch, a push button, resistors, and an HC-SR04 ultrasonic sensor. The circuit is designed to interface these components with the Arduino Nano for various functionalities.

Component List

Arduino Nano

• Description: A small, complete, and breadboard-friendly board based on the ATmega328P.
• Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK

RGB LED (Wokwi compatible)

• Description: A common anode RGB LED.
• Pins: R, COM, G, B

LED: Two Pin (orange)

• Description: A standard two-pin orange LED.
• Pins: cathode, anode

NRF24L01

• Description: A wireless transceiver module.
• Pins: IRQ (not used), MOSI, CSN, VCC (3V), GND, CE, SCK, MISO

Toggle Switch

• Description: A simple toggle switch.
• Pins: L1, COM, L2

Resistor

• Description: A resistor with various resistance values.
• Pins: pin1, pin2
• Properties:
  • Resistance: 220 Ohms
  • Resistance: 5100 Ohms

Piezo Speaker

• Description: A piezoelectric speaker.
• Pins: pin1, pin2

Push Button

• Description: A push button with an integrated LED.
• Pins: LED +, Common, NO, NC, LED-

HC-SR04 Ultrasonic Sensor

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

Wiring Details

Arduino Nano

• GND: Connected to:

  • Push button (NO)
  • Resistor (pin2, 5100 Ohms)
  • Piezo Speaker (pin1)
  • NRF24L01 (GND)
  • Resistor (pin1, 220 Ohms)
  • HC-SR04 Ultrasonic Sensor (GND)
  • LED: Two Pin (orange) (cathode)
  • Push button (LED-)
  • RGB LED (Wokwi compatible) (COM)

• 5V: Connected to:

  • HC-SR04 Ultrasonic Sensor (VCC)
  • Push button (Common)
  • Toggle Switch (COM)

• D2: Connected to:

  • Toggle Switch (L2)
  • Resistor (pin2, 5100 Ohms)

• D4: Connected to:

  • Piezo Speaker (pin2)

• D7: Connected to:

  • NRF24L01 (CE)

• D8: Connected to:

  • NRF24L01 (CSN)

• D9: Connected to:

  • Resistor (pin2, 220 Ohms)

• D10: Connected to:

  • Resistor (pin2, 220 Ohms)

• D11/MOSI: Connected to:

  • NRF24L01 (MOSI)

• D12/MISO: Connected to:

  • NRF24L01 (MISO)

• A4: Connected to:

  • HC-SR04 Ultrasonic Sensor (ECHO)

• A3: Connected to:

  • HC-SR04 Ultrasonic Sensor (TRIG)

• A2: Connected to:

  • Resistor (pin2, 220 Ohms)

• A1: Connected to:

  • Resistor (pin2, 220 Ohms)

• A0: Connected to:

  • Resistor (pin2, 220 Ohms)

• 3V3: Connected to:

  • NRF24L01 (VCC (3V))

• D13/SCK: Connected to:

  • NRF24L01 (SCK)

RGB LED (Wokwi compatible)

• R: Connected to:

  • Resistor (pin1, 220 Ohms)

• G: Connected to:

  • Resistor (pin1, 220 Ohms)
  • Push button (LED +)

• B: Connected to:

  • Resistor (pin1, 220 Ohms)

LED: Two Pin (orange)

• cathode: Connected to:

  • Piezo Speaker (pin1)
  • Resistor (pin1, 220 Ohms)

• anode: Connected to:

  • Resistor (pin1, 220 Ohms)

NRF24L01

• CE: Connected to:

  • Arduino Nano (D7)

• CSN: Connected to:

  • Arduino Nano (D8)

• MOSI: Connected to:

  • Arduino Nano (D11/MOSI)

• MISO: Connected to:

  • Arduino Nano (D12/MISO)

• VCC (3V): Connected to:

  • Arduino Nano (3V3)

• GND: Connected to:

  • Arduino Nano (GND)

• SCK: Connected to:

  • Arduino Nano (D13/SCK)

Toggle Switch

• L2: Connected to:

  • Arduino Nano (D2)
  • Resistor (pin2, 5100 Ohms)

• COM: Connected to:

  • Arduino Nano (5V)
  • Push button (Common)
  • HC-SR04 Ultrasonic Sensor (VCC)

Resistor

• pin1: Connected to:

  • RGB LED (Wokwi compatible) (R)
  • RGB LED (Wokwi compatible) (G)
  • RGB LED (Wokwi compatible) (B)
  • LED: Two Pin (orange) (anode)
  • LED: Two Pin (orange) (anode)
  • Push button (LED +)
  • Piezo Speaker (pin1)
  • NRF24L01 (GND)
  • HC-SR04 Ultrasonic Sensor (GND)
  • LED: Two Pin (orange) (cathode)
  • Push button (LED-)
  • RGB LED (Wokwi compatible) (COM)

• pin2: Connected to:

  • Arduino Nano (D2)
  • Arduino Nano (D9)
  • Arduino Nano (D10)
  • Arduino Nano (A2)
  • Arduino Nano (A1)
  • Arduino Nano (A0)
  • Push button (NO)
  • Arduino Nano (GND)

Piezo Speaker

• pin1: Connected to:

  • LED: Two Pin (orange) (cathode)
  • Resistor (pin1, 220 Ohms)
  • NRF24L01 (GND)
  • HC-SR04 Ultrasonic Sensor (GND)
  • LED: Two Pin (orange) (cathode)
  • Push button (LED-)
  • RGB LED (Wokwi compatible) (COM)

• pin2: Connected to:

  • Arduino Nano (D4)

Push Button

• NO: Connected to:

  • Arduino Nano (GND)
  • Resistor (pin2, 5100 Ohms)

• Common: Connected to:

  • Arduino Nano (5V)
  • Toggle Switch (COM)
  • HC-SR04 Ultrasonic Sensor (VCC)

• LED +: Connected to:

  • Resistor (pin1, 220 Ohms)
  • RGB LED (Wokwi compatible) (G)

• LED-: Connected to:

  • Arduino Nano (GND)
  • Piezo Speaker (pin1)
  • NRF24L01 (GND)
  • Resistor (pin1, 220 Ohms)
  • HC-SR04 Ultrasonic Sensor (GND)
  • LED: Two Pin (orange) (cathode)
  • RGB LED (Wokwi compatible) (COM)

HC-SR04 Ultrasonic Sensor

• VCC: Connected to:

  • Arduino Nano (5V)
  • Push button (Common)
  • Toggle Switch (COM)

• TRIG: Connected to:

  • Arduino Nano (A3)

• ECHO: Connected to:

  • Arduino Nano (A4)

• GND: Connected to:

  • Arduino Nano (GND)
  • Piezo Speaker (pin1)
  • NRF24L01 (GND)
  • Resistor (pin1, 220 Ohms)
  • LED: Two Pin (orange) (cathode)
  • Push button (LED-)
  • RGB LED (Wokwi compatible) (COM)

Documented Code

Arduino Nano Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main