Hello Guys I've been looking around and trying to learn something about sensing wind speed. Apart from anemometers with three cups it appears that my options...
Chris
cholme@...
Oct 3, 2005 12:15 pm
... I've done the anemometer type thingy, and you're not limited to three cups... Four is just as workable, and slightly easier to make (90 degree angles being...
Thanks fellows, I am most interested in the linear thing Dave mentioned concerning thermal gradients. Being in possession of nifty things like difference...
Chris
cholme@...
Oct 3, 2005 1:36 pm
Hot wire resistance/current flow, air pressure through a venturi, windmill. You could have a calibrated mercury drip and a fine wire grid detecting how far the...
Another way which I don't think anyones mentioned, is using differential pressure sensors and a venturie . 2 or 3 sensors could be used to extend the range. ...
Air pressure is another thing of interest to me at the moment. Does anyone know of a cheap sensor? Regards Chris Holme ... From: mugwa@yahoogroups.com...
Chris
cholme@...
Oct 3, 2005 10:26 pm
If you're in a hurry try RS components, if you want a better deal and are willing to wait a week or so, Mouser electronics in the USA is the place to try. ...
cheers Regards Chris Holme ... From: mugwa@yahoogroups.com [mailto:mugwa@yahoogroups.com] On Behalf Of ron.casotti@... Sent: Tuesday, 4 October 2005 9:36...
Chris
cholme@...
Oct 4, 2005 8:08 am
... DIY's are also possible for (static) pressure, but I think they can be a bit trickier, for two reasons... Linearity and, if you're doing barometric...
Hello all. I have been playing around with battery operated sensors just lately. The circuit involves a pic18f1320, 2 lm35s,a reset circuit, a 3V reg for ...
Chris
cholme@...
Oct 11, 2005 3:50 pm
Hello Andrew Could you give me a call on 0403 878 175 sometime please. Regards Chris Holme...
Chris
cholme@...
Jan 13, 2006 8:34 am
Hello Peoples Mike at world wide has some second hand 7 AHr SLA batteries for a fiver each. These things have come from alarm systems and are one year old. I ...