Circuit Documentation

Summary

This circuit integrates a variety of components including an Arduino UNO, an HC-SR04 Ultrasonic Sensor, a 16x2 I2C LCD, a Raspberry Pi 4B, a Piezo Buzzer, a Water Level Sensor, an RGB LED, a GPS NEO 6M module, several resistors, a tactile switch, and a DHT11 temperature and humidity sensor. The Arduino UNO serves as the primary microcontroller, interfacing with sensors and output devices, while the Raspberry Pi 4B is used for more complex processing and communication with the GPS module. The circuit is designed to perform multiple functions, likely including distance measurement, environmental data collection, and user interaction through the switch and display.

Component List

Arduino UNO

A microcontroller board based on the ATmega328P. It has digital input/output pins, analog inputs, a USB connection for programming, and power management features.

HC-SR04 Ultrasonic Sensor

A sensor that measures distance by emitting ultrasonic waves and measuring the time taken for the echo to return.

16x2 I2C LCD

A liquid crystal display that can show 16 characters per line for 2 lines, with an I2C interface for communication.

Raspberry Pi 4B

A small single-board computer with a Broadcom processor, GPIO pins, USB ports, and various other interfaces.

Piezo Buzzer

An electronic device that emits sound when an electric signal is applied.

Water Level Sensor

A sensor that detects the level of water in a container or environment.

RGB LED (Wokwi compatible)

A light-emitting diode that can display multiple colors by mixing red, green, and blue light.

GPS NEO 6M

A module that provides location and timing information based on signals from GPS satellites.

Resistor (200 Ohms)

A passive two-terminal electrical component that implements electrical resistance as a circuit element.

Tactile Switch Buttons - 12mm Square

A simple switch mechanism for control of a device or process.

DHT11

A basic, ultra low-cost digital temperature and humidity sensor.

Wiring Details

Arduino UNO

• 5V connected to VCC of HC-SR04, 16x2 I2C LCD, Water Level Sensor, and one terminal of the tactile switch.
• GND connected to GND of HC-SR04, 16x2 I2C LCD, Water Level Sensor, Piezo Buzzer, RGB LED, and DHT11.
• D4 connected to DATA of DHT11.
• D2 connected to TRIG of HC-SR04.
• D3 connected to ECHO of HC-SR04.
• D10 connected to R of RGB LED through a 200 Ohm resistor.
• D11 connected to G of RGB LED through a 200 Ohm resistor.
• D12 connected to B of RGB LED through a 200 Ohm resistor.
• D9 connected to pin 1 of Piezo Buzzer through a 200 Ohm resistor.
• A0 connected to SIG of Water Level Sensor.
• A4 (SDA) connected to SDA of 16x2 I2C LCD.
• A5 (SCL) connected to SCL of 16x2 I2C LCD.

HC-SR04 Ultrasonic Sensor

• VCC connected to 5V of Arduino UNO.
• TRIG connected to D2 of Arduino UNO.
• ECHO connected to D3 of Arduino UNO.
• GND connected to GND of Arduino UNO.

16x2 I2C LCD

• VCC connected to 5V of Arduino UNO.
• GND connected to GND of Arduino UNO.
• SDA connected to A4 (SDA) of Arduino UNO.
• SCL connected to A5 (SCL) of Arduino UNO.

Raspberry Pi 4B

• 3V3 connected to VCC of GPS NEO 6M.
• GND connected to GND of GPS NEO 6M.
• GPIO4 connected to TX of GPS NEO 6M.
• GPIO15 connected to RX of GPS NEO 6M.

Piezo Buzzer

• pin 1 connected to D9 of Arduino UNO through a 200 Ohm resistor.
• pin 2 connected to GND of Arduino UNO.

Water Level Sensor

• SIG connected to A0 of Arduino UNO.
• VCC connected to 5V of Arduino UNO.
• GND connected to GND of Arduino UNO.

RGB LED (Wokwi compatible)

• R connected to D10 of Arduino UNO through a 200 Ohm resistor.
• G connected to D11 of Arduino UNO through a 200 Ohm resistor.
• B connected to D12 of Arduino UNO through a 200 Ohm resistor.
• COM connected to GND of Arduino UNO.

GPS NEO 6M

• VCC connected to 3V3 of Raspberry Pi 4B.
• RX connected to GPIO15 of Raspberry Pi 4B.
• TX connected to GPIO4 of Raspberry Pi 4B.
• GND connected to GND of Raspberry Pi 4B.

Resistor (200 Ohms)

• Four resistors are used in the circuit, each with a resistance of 200 Ohms. They are connected in series with the RGB LED pins and the Piezo Buzzer to limit the current.

Tactile Switch Buttons - 12mm Square

• One terminal connected to 5V of Arduino UNO.
• The other terminal connected to a 200 Ohm resistor, which is then connected to GND.

DHT11

• DATA connected to D4 of Arduino UNO.
• GND connected to GND of Arduino UNO.
• VCC connected to 5V of Arduino UNO.

Documented Code

Arduino UNO Code (sketch.ino)

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

}

void loop() {
  // put your main code here, to run repeatedly:

}

Note: The code provided for the Arduino UNO is a template with empty setup and loop functions. The actual functionality needs to be implemented based on the requirements of the circuit.