Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with a BME/BMP280 sensor, a 16x2 I2C LCD display, a green LED, and a resistor. The Arduino UNO serves as the central controller, reading data from the BME/BMP280 sensor and displaying it on the LCD. The LED is controlled via a digital pin on the Arduino, with a resistor used to limit the current.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

BME/BMP280

• Description: A combined digital humidity, pressure, and temperature sensor.
• Pins: GND, SCL, SDA, VIN

16x2 I2C LCD

• Description: A 16x2 character LCD display with I2C interface.
• Pins: GND, VCC, SDA, SCL

LED: Two Pin (green)

• Description: A green LED with two pins.
• Pins: cathode, anode

Resistor

• Description: A resistor with a resistance of 200 Ohms.
• Pins: pin1, pin2

Wiring Details

Arduino UNO

• 3.3V: Connected to VIN of BME/BMP280
• 5V: Connected to VCC of 16x2 I2C LCD
• GND: Connected to GND of BME/BMP280, 16x2 I2C LCD, and cathode of LED
• A4: Connected to SDA of BME/BMP280
• A5: Connected to SCL of BME/BMP280
• SCL: Connected to SCL of 16x2 I2C LCD
• SDA: Connected to SDA of 16x2 I2C LCD
• D8: Connected to pin2 of Resistor

BME/BMP280

• VIN: Connected to 3.3V of Arduino UNO
• GND: Connected to GND of Arduino UNO
• SCL: Connected to A5 of Arduino UNO
• SDA: Connected to A4 of Arduino UNO

16x2 I2C LCD

• VCC: Connected to 5V of Arduino UNO
• GND: Connected to GND of Arduino UNO
• SCL: Connected to SCL of Arduino UNO
• SDA: Connected to SDA of Arduino UNO

LED: Two Pin (green)

• cathode: Connected to GND of Arduino UNO
• anode: Connected to pin1 of Resistor

Resistor

• pin1: Connected to anode of LED
• pin2: Connected to D8 of Arduino UNO

Code Documentation

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:

}

documentation.txt

This documentation provides a comprehensive overview of the circuit, including a summary, detailed component descriptions, wiring details, and the code used in the Arduino UNO.