Create device for control of fan speed. 4 levels of speed. speed switching in manual mode with two.....?

Answer Too many requirements for a circuit design that can be described here,but may be possible to do with thermal switches and some relays.Start by drawing diagrams of single-pole double-throw switchest... Read More »

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How do i fix the "a hi-speed usb device is plugged into a non-hi-speed usb hub" error message.?

Judging by the info that you have provided, your problem is either 1 of 3 problems.1. The hub that you're using is either set to USB 1.1 (if it can support USB 1.1 & 2) or it is only a USB 1.1 hub.... Read More »

HI-SPEED USB Device Attached To non-HI-SPEED Hub?

What it means is, you are not able to transfer files at the highest possible speed. Usually this means you have a USB 1.1 device connected to a 1.0 hub, or a 2.0 device connected to a 1.0 or 1.1 hu... Read More »

Canon rebel xt you have had issues trying to take pictures in bright sunlight you have your camera set in manual mode The ISO is at 100 and the shutter speed is at 200 you usually will get a gr?

It's how sensitive the film is to the light. Which is measured in ISO. If you use a film camera. The film box should say what ISO it is. If you have a digital camera, you can adjust it in certain m... Read More »

How many seconds is a normal shutter speed i have a nikon n80 with adjustable shutter speed and i was wondering what the noraml shutter speed is?

Shutter speed depends upon available light, aperture, the subject, and camera settings. If a picture is being taken in low light with a slow lens (larger aperture number), then the shutter may need... Read More »