Circuit Documentation

Summary of the Circuit

This circuit consists of an Arduino UNO R4 WiFi microcontroller board and a DHT22 temperature and humidity sensor. The Arduino UNO R4 WiFi is responsible for controlling the operation of the circuit and processing the data received from the DHT22 sensor. The DHT22 sensor measures the ambient temperature and humidity and sends this data to the Arduino via a digital signal.

Component List

Arduino UNO R4 WiFi

• Description: A microcontroller board based on the ATmega328P with integrated WiFi capabilities.
• Purpose: Acts as the central processing unit of the circuit, reads sensor data, and can communicate with other devices over WiFi.
• Pins: OFF, GND, VRTC, IIC0_SCL, IIC0_SDA, 3V3, GPIO 41, GPIO 0, GPIO 42, GPIO 43, GPIO 44, BOOT, IOREF, RESET, 5V, VIN, A0, A1, A2, A3, A4, A5, RSPCKA, CIPO, COPI, D0/RX, D1/TX, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, AREF, SDA, SCL.

DHT22

• Description: A digital temperature and humidity sensor with a calibrated digital signal output.
• Purpose: Measures the ambient temperature and humidity.
• Pins: +, Out, -.

Wiring Details

Arduino UNO R4 WiFi

• 5V: Provides power to the DHT22 sensor.
• GND: Connected to the ground pin of the DHT22 sensor to complete the power circuit.
• D2: Receives the digital signal output from the DHT22 sensor.

DHT22

• + (Power): Connected to the 5V output from the Arduino UNO R4 WiFi.
• Out (Signal): Sends the temperature and humidity data to the Arduino UNO R4 WiFi's D2 pin.
• - (Ground): Connected to the GND pin on the Arduino UNO R4 WiFi.

Documented Code

Arduino UNO R4 WiFi - sketch.ino

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

}

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

}

Additional Notes

• The provided code is a template and does not include the initialization and reading of the DHT22 sensor. The user is expected to fill in the setup and loop functions with the appropriate code to interface with the DHT22 sensor.
• The documentation.txt file is empty and can be used to add additional notes or documentation related to the code or circuit operation.

This concludes the documentation for the given circuit. The document provides an overview of the circuit, detailed information about each component, wiring instructions, and the initial code template for the microcontroller.