> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Wind Vane

**Type:** Product page · **SKU:** SEN-28868 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/sparkfun-wind-vane-direction-sensor.html ([markdown](https://core-electronics.com.au/sparkfun-wind-vane-direction-sensor.html.md))

The wind vane indicates the direction of the wind. Internally, on the vane are eight switches, each with a unique resistor. As the wind vane rotates, a...

## Pricing

- **Price:** $35.90 (inc GST) — $32.64 AUD, exc GST
- **Quantity discounts:** 5+ $31.65 (exc GST) · 25+ $31.00 (exc GST) · 100+ $29.70 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 39 more in 5–11 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN-28868:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
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- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The wind vane indicates the direction of the wind. Internally, on the vane are eight switches, each with a unique resistor. As the wind vane rotates, a magnet closes the reed switches, and may close two at a time due to their proximity to each other. With the use of an external resistor, a voltage divider can be created. Measuring the voltage output with an analog-to-digital converter on your microcontroller allows you to determine the direction the wind vane is pointing.

There is not one common conversion function, as the voltage output will depend on the value of the external resistor used.

Since the values outputted by the wind vane are based on degrees, you can theoretically have any value represent any direction. However, Sparkfun recommend having the value at degree 0 represent North for ease of use. There are also very tiny, barely visible direction indicators on all four sides of the wind vane. If you choose different values to indicate directions, mark them accordingly. When installing and positioning your weather meters, ensure that any direction markings are pointed correctly.

Please note that the wind vane "points" in the direction from which the wind blows.

This is the same wind vane used with the [Weather Meter Kit](https://core-electronics.com.au/weather-meter-kit.html).

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN-28868-1.jpg)