A simple charge controller suitable for wind or solar applications. Uses a TL-084 Op Amp, automotive spotlight relay and a handful of other components. The same circuit could also be used as a low voltage cut off to disconnect your battery before its fully discharged. Suitable for 12 and 24v operation.
The controller uses two trimpots to set a low and high switching voltage. When the applied voltage ( battery ) exceeds the high voltage setting, a relay is turned on. The relay will remain on until the applied voltage drops below the low voltage setting.
Wind or Solar Charge Controller - [Link]
My project is about a wind vane that provides wind direction via a digital output utilizing an LED configuration.The objective is to create an LED configuration were only one LED would light up, showing exactly the direction of the wind vane.
Electronic Wind Vane – [Link]
In this project, we’ll build a small, vertical-axis wind turbine, or VAWT for short. These are not as efficient as their horizontal-axis cousins, but they are better suited to urban environments where wind can come from all different directions.
Build a Wind Lantern – [Link]
Seeed Studio has posted a guide to powering your projects off the grid. Battery, wind, hydro, solar, they’ve got it covered. [via]
Guide to powering your projects off the grid – [Link]
The Zoetrope is a vertical-axis wind turbine made from common materials such as stove pipe, metal brackets, plastic sheet and a trailer hub. Many of the materials can be found at local hardware or home improvement stores, the rest can either be made at home or purchased online.
Build your own vertical axis wind turbine – [Link]
This project shows how to build a wind generator using common materials.
Wind power is abundant, clean, inexpensive and easy to do. It is our belief that anyone can be in control of where his or her electricity comes from. There is nothing more rewarding and empowering than making a wind powered generator from scrap materials.
How to build a Wind Generator - [Link]
This is a simple interface to the windmill power storage. There is a button that the user toggles to get the current voltage and percent charge on the stored energy in the windmill battery(s). to conserve power the unit is controlled by a toggle switch rather than always be on; we work hard to generate that power – no point in throwing it away. [via]
Wind Meter with LCD - [Link]