rpi fan box

thingiverse

Design a Shell that Installs a Mini Fan using Raspberry Pi 3 Box Craft a custom-built shell that can seamlessly integrate a miniature fan into a compact Raspberry Pi 3 setup. The goal is to create an efficient and user-friendly system where the fan is easily installed, controlled, and monitored through the Raspberry Pi's interface. To start this project, gather the necessary components: * A Raspberry Pi 3 model B * A mini fan (preferably with a DC power input) * A Jumper Wire Kit * A Breadboard * Power Supply Unit (PSU) for the Raspberry Pi First, ensure that the Raspberry Pi 3 is properly configured and updated. Then, connect the mini fan to the breadboard using jumper wires. Connect one of the fan's terminals to a digital pin on the Raspberry Pi through the breadboard. Next, write a simple Python script that controls the fan using the GPIO library. This script will read the current temperature from a DHT11 sensor and adjust the fan speed accordingly. ```python import RPi.GPIO as GPIO import time # Set up GPIO mode GPIO.setmode(GPIO.BCM) # Define GPIO pin for fan FAN_PIN = 17 # Initialize GPIO pin as output GPIO.setup(FAN_PIN, GPIO.OUT) try: while True: # Read temperature from DHT11 sensor temperature = dht.read_temperature() # Adjust fan speed based on temperature if temperature > 25: GPIO.output(FAN_PIN, GPIO.HIGH) else: GPIO.output(FAN_PIN, GPIO.LOW) time.sleep(1) except KeyboardInterrupt: GPIO.cleanup() ``` Finally, connect the power supply unit to the Raspberry Pi and ensure that it is properly powered on. The mini fan should now be operational and controlled by the Raspberry Pi's interface. This project showcases a creative way to utilize a Raspberry Pi 3 for automating tasks, in this case, controlling a miniature fan based on temperature readings from a DHT11 sensor.