Instructables user indestructable created this guide on connecting AC fixtures (light bulbs, in this example) to your computer using a USBmicro U451.
If you have ever wanted to control electronic devices from your computer to control or regulate your environment, this instructable will guide you. In this example of computer control, a USB relay device will control two 60 watt light bulbs from a PC program.
4 thoughts on “Control AC devices from your computer”
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Could you easily make this wireless with and Xbee.
I’m actually using a phidgets brand USB relay board. It’s the Phidget 1014 model which has four independent relays. There’s a smaller model and they are both rather cheap. I’m using mine to turn some buttons on and off in my photobooth. It’s quite easy to use too.