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  #31 (permalink)  
Old 12-18-2010, 10:00 PM
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Geeze, I can barly answer my E mail.... I did find out laptops aren't very areodynamic ,that helped with the learning prosess...something you probably already knew ,being a pilot and all...I agree how addicting electronics can be .my dad was in R&D and was involved in making the first IC's he taught me a lot. most of which I've forgoten.Ohms law has stuck with me and the resistor color code,thats about it.

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  #32 (permalink)  
Old 12-18-2010, 10:04 PM
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The stuff like basic stamps require a little electric understanding but not much. You don't need to know how to design a circuit but you would need to know thinks like if you put two resisters in series and pull off the center you get half the voltage; stuff like that. I think that is what makes it fun.

The rest is one thing at a time just like any job. No one thing is hard but when you put it together it looks overwhelming.
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Old 12-18-2010, 10:12 PM
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Here is a guy who made an rpm gauge for a mill; pretty simple and cool and he gives you the source code as well:

http://www.parallax.com/Default.aspx?tabid=420
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Old 12-18-2010, 10:25 PM
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That is pretty simple Gary and your timing is perfect ..Just today I was wondering how I could figure what size pulley I need on the compressor I'm building ,it has to operate at 1200 rpm
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Old 12-19-2010, 06:35 AM
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Would the R/C airplane tachs work for what you need? They select 2,3, or 4 propellers to set rpm. You may have to calc a slight difference if you have say 6 arms on a pulley. You would set it by 3 and 1/2 your indicated value. Local hobby stores have them.

Only caveat is you may (or may not) need sunlight to read it properly. If you point it at an incandescent light it will reflect the hz!

http://www3.towerhobbies.com/cgi-bin...&I=LXPT31&P=ML
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Old 12-19-2010, 08:33 AM
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Quote:
Originally Posted by gow589
Was it 6 meter?

I looked on the web. They are still here and have a museum page with a lot of their old stuff.

72mhz.

Vince
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Old 12-19-2010, 07:11 PM
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So they haven't actually built that CNC unit? You donated to help fund the project?
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Old 12-22-2010, 08:38 AM
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If you are serious about building your CNC machine for what ever purpose, there are some guys here doing some serious builds:
http://www.cnczone.com/forums/index....rking_machines

This section is for home built Plasma and such:
http://www.cnczone.com/forums/plasma...e_project_log/
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