<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2650.12">
<TITLE>RE: [sdiy] My Joystick Design</TITLE>
</HEAD>
<BODY>
<P><FONT SIZE=2>I should add that </FONT>
<BR><FONT SIZE=2>a) One constraint is that the offset is not attenuated by the joystick (thus it is in a following stage), and its range is +-5v (thus the resistor values) - though I may make it more.</FONT></P>
<P><FONT SIZE=2>b) This simulates in ElectronicsWorkbench and performs exactly as I want it - but does that really mean anything? :-)</FONT>
<BR><FONT SIZE=2>c) Any way to reduce the number of amps?</FONT>
<BR><FONT SIZE=2>Thanks again all!</FONT>
<BR><FONT SIZE=2>KRIS</FONT>
</P>
<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>Ok, please no laughs. I'm still a bouncing baby newbie, but I bought</FONT>
<BR><FONT SIZE=2>some of those MECI joysticks and want to make some controllers out of</FONT>
<BR><FONT SIZE=2>them. The first one's schemo is here</FONT>
</P>
<P><FONT SIZE=2><A HREF="http://www.stucki.com/krhen/downloads/joystick.gif" TARGET="_blank">http://www.stucki.com/krhen/downloads/joystick.gif</A></FONT>
<BR><FONT SIZE=2><<A HREF="http://www.stucki.com/krhen/downloads/joystick.gif" TARGET="_blank">http://www.stucki.com/krhen/downloads/joystick.gif</A>> </FONT>
</P>
<P><FONT SIZE=2>(one axis only shown) Its fairly simple. Takes either a constant</FONT>
<BR><FONT SIZE=2>voltage (from the +15v source) or some input switched at the jack, so it</FONT>
<BR><FONT SIZE=2>either functions as an attenuator or a pure CV source. The input is</FONT>
<BR><FONT SIZE=2>ranged, then the joystick moves from 0 to the range. Then, there's an</FONT>
<BR><FONT SIZE=2>offset pot that takes it +- about 5v. Both axes are the same. Any</FONT>
<BR><FONT SIZE=2>comments/suggestions/optimizations? I'm particularly not sure on the</FONT>
<BR><FONT SIZE=2>input/output impedance thing.</FONT>
</P>
<P><FONT SIZE=2>The other design is the same but the joystick acts as a reversible</FONT>
<BR><FONT SIZE=2>attenuator (I'll show that one later). Thanks all </FONT>
<BR><FONT SIZE=2>KRIS </FONT>
</P>
</BODY>
</HTML>