Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, an LCD screen, a DHT11 temperature and humidity sensor, an NPN transistor, a DC motor, and a resistor. The circuit is designed to interface these components with the Arduino UNO, allowing for data display on the LCD screen and control of the DC motor.

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

LCD screen 16x2 I2C

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

NPN Transistor (EBC)

• Description: A standard NPN transistor with emitter, base, and collector pins.
• Pins: emitter, base, collector

DHT 11

• Description: A temperature and humidity sensor.
• Pins: VCC, GND, DATA

DC Motor

• Description: A simple DC motor.
• Pins: pin 1, pin 2

Resistor

• Description: A resistor with a resistance of 1000 Ohms.
• Pins: pin1, pin2
• Properties:
  • Resistance: 1000 Ohms

Wiring Details

Arduino UNO

• 3.3V: Connected to VCC of DHT 11
• 5V: Connected to pin 2 of DC Motor and VCC of LCD screen 16x2 I2C
• GND: Connected to GND of DHT 11, emitter of NPN Transistor, GND of LCD screen 16x2 I2C
• A4: Connected to SDA of LCD screen 16x2 I2C
• A5: Connected to SCL of LCD screen 16x2 I2C
• D4: Connected to pin2 of Resistor
• D2: Connected to DATA of DHT 11

LCD screen 16x2 I2C

• SCL: Connected to A5 of Arduino UNO
• SDA: Connected to A4 of Arduino UNO
• VCC: Connected to 5V of Arduino UNO
• GND: Connected to GND of Arduino UNO

NPN Transistor (EBC)

• emitter: Connected to GND of Arduino UNO
• base: Connected to pin1 of Resistor
• collector: Connected to pin 1 of DC Motor

DHT 11

• VCC: Connected to 3.3V of Arduino UNO
• GND: Connected to GND of Arduino UNO
• DATA: Connected to D2 of Arduino UNO

DC Motor

• pin 1: Connected to collector of NPN Transistor
• pin 2: Connected to 5V of Arduino UNO

Resistor

• pin1: Connected to base of NPN Transistor
• pin2: Connected to D4 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:

}

Documentation (documentation.txt)

This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and documented code.