Measure the wind, a 3D printed anemometer

myminifactory

Measure the wind with precision using this 3D printed anemometer, a device that can finally reveal the secret behind Sherlock Holmes' accuracy in determining wind velocity. His pipe smoke was merely a clever distraction from his true tool - a handheld anemometer that measured wind direction and speed with ease. Whether you're a seasoned meteorologist or just a curious enthusiast, being able to measure wind strength is essential. This DIY project boasts three printed parts and a compact DC motor, which provides a smooth rotation without any magnetic resistance. Test the motor's performance by attaching it to a fan and blowing air into it while measuring the voltage - it should read around 1.5 volts. Adjust the mounting holes for the motor in the Open SCAD file if needed, ensuring a secure fit. To avoid adding electronics, this anemometer connects the two motor wires directly to a universal meter, keeping things simple and accessible. Calibration is key. Get in your car, hold the instrument outside the window, and ask the driver to call out the speed as you plot the values in Excel later. Be prepared for an S-curve due to the nature of DC motors. Use this anemometer at your next kid's party - who knows, maybe someone will blow a whopping 35 km/hr! The fan blades are cleverly angled at 60 degrees, requiring no support whatsoever during printing.