Hi Gene, Just a quickie, In Antarctica I used a wind sensor that consisted of a hollow tube with a microphone at its bas. Wind speed was deduced from the...
Niall, Cool (pun intended for Antarctica!) Interesting! Could it detect 5-15mph? Many things start to whistle over 20mph :-) I have also found sonic rain...
Gene, I can't remember the details - however the conceptmust have been simple as there was only a single uProc, an LM324 and a EEPROM for results storage. This...
The venturi effect with ss barometers sounds good for wind speed measurement, Gene, as does Niall's method, if it works at low windspeeds. With modern...
Nifty little calculator for fluid pressure http://www.engineeringtoolbox.com/dynamic-pressure-d_1037.html With 1 kPa = 0.145 psi the calculator shows a wind...
Hmmm, a second-hand wind sensor off the Beagle? One careful owner (?). From a smoke-free home. Buyer collects. Seems like a bargain. Niall Saunders Clinterty...
Hi guys, I mounted DH motors on my EQ3-2, I calculated the right ratio with Steve Bedair formula, 2.965924 and 5.931848 because 65 teeth and 130 teeth. I am...
Ok, I did some search here, my 5.93 ratio is too high, I will half it, then re-train and go 2x farther than my normal target dot, then reput the ratio to 5.9,...
can anyone point me to info on using the circuit board in the base of an etx 80 or 60 to run much higher powered , non meade servos? I would think a transistor...
... How -much- "higher powered"? ... Transistors have a "gain"... power transistors tend to have less gain than the smaller ones (MOSFETs operate differently, ...
Well I really dont know yet about how much power im going to need, I have a few servos in a box somwhere, salvaged from copy machines ect, I will have to dig...
Have any members of the group thought about the use of the Parallax Propeller chip for goto conversions? There is a lot of capability there for servo and...
For all those alternative :-) Mac OSX types, PHD added support for the unit in the Mac version http://www.stark-labs.com/prerelease.html Plug and play, no...
The Furuno PB150 Ultimate Ultrasonic WeatherStation ($800+/-) appears to do something like that. I'd like windspeed and direction on the boat, but the price of...
I would be happy to lend a hand... if for nothing else than peer review. I am pretty well versed in PIC code and usage, having built my own protoype HO train...
AS I understand it the AS 497 has been used with the LX90. Yet there is no LX90 to be found in Telescope Models, at least on the 43E version I'm playing with....
The list of telescope models presented by the Autostar changes, depending on the results it gets when it queries the electronics of the attached motors during...
As much as I love playing with microcontrollers, I keep wondering if a better approach would be to use embedded Linux on a small, ultra-low power SBC (single...
AHHA! Thanks. This particular unit could not be reflashed. I tried both Star and Meade updaters regular and safe modes. It seemed to function fine with an...
Good morning; It is impressive how much longer something seems to take than you envisioned originally. A few months back, I joined this group hoping to learn...
What motor kit did you order? Are you sure those motors are capable of GOTO operation? "My advice is always free and worth every penny!" -Christopher Erickson ...
Good morning, Chris; When I load the URL provided for the larger files, my version of Internet Explorer says that it does not exist. Has something changed, or...
Good question Chris! This looks like one of those occasions where if you learn to walk before you can run, then when the time comes to run you need expensive...
Unfortunately the off-group archive server is currently off-line and is tentatively scheduled to be back on-line at some point this fall. When it is back up,...
Good morning, Chris; Boy, you go off and look at some files and type a message, and all kinds of inquiries appear. Chris, I am actually not sure what motors I...
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