This three-cup anemometer measures wind speed by generating a DC voltage proportional to the rotation speed of its aluminium cups. The faster the wind blows, the higher the voltage output — up to 1.2V at maximum speed. Simply read the analogue output with a microcontroller to calculate wind speed.

Designed with a rain-proof housing and a standard Octopus brick connector, it integrates easily with ElecFreaks Octopus series boards and other microcontroller platforms. The three 6 cm half-sphere cups are mounted at 120° intervals on a ~20 cm diameter rotor.

Key Features

• Analogue Voltage Output – DC voltage proportional to wind speed (up to 1.2V)
• Three Aluminium Cups – 6 cm diameter, mounted at 120° intervals
• Rain-Proof Design – Suitable for outdoor weather station use
• Octopus Brick Connector – Plug-and-play with Octopus series boards
• ±10% Tolerance – Suitable for educational and hobbyist weather monitoring

Specifications

• Cup Diameter: 6 cm
• Rotor Diameter: ~20 cm
• Output: DC voltage (0–1.2V analogue)
• Tolerance: ±10%

Ideal For

• DIY weather stations
• STEM education and science projects
• Environmental monitoring with micro:bit or Arduino
• Outdoor sensor networks