Re: [mowbot] Proportional Radio Control
Dave Everett (deverett nospam at idx.com.au)
Thu, 17 Jun 1999 17:00:35 +1000
At 13:22 16-06-99 -0400, Michael Davenport wrote:
>I have found an interesting little circuit for proportional radio control.
>I am not very well equipped to test this circuit, so I was hoping that one
>of you might have had some experience with it. It is found at
>http://sm0vpo.8m.com/use/rc-prop.htm
>
>I have purchased most of the parts and I am building it on a proto board to
>test it. Anyone have a circuit simulation software package that could test
>the concept?
>
>I am still needing the 0-100K potentiometers and the salesman at my local
>electronics retailer said "yeah, you're gonna want to get pots with real
>high resolution, that's gonna be expensive."
"High resolution" What a clown! The resolution is fixed by the length of
the arc which of course is always the same. You should however get linear
instead of logarithmic.
The only way to *appear* to increase res is to use mutli-turn pots. These
can require 10 or 25 full rotations to travel from one end stop to the
other. You can also get 10 turn knobs that will interface to a standard pot.
Dave Everett
Domestic Droids Website
http://members.xoom.com/Mowbot/