analog gauges to PWM conversion

[gspannelljr]

I have 4 analog gauges (RPM,Airspeed,Turn/Bank,climb/descent) that if I can figure out how to control them, then I can use them as they are. Does anyone know how create a circuit that will convert a PWM signal to a DC analog voltage? Twp of the gauges, rate of climb-descent and Turn/bank, needs a toggle voltage from +1V to -1V so it can rise and fall. They work so nicely I would hate to have to tear em up and convert them.

[737NUT]

Here is one,http://controls.ame.nd.edu/microcontroller/main/node40.html

There are others as well already built.

[Hessel Oosten]

Hi ???? (Sorry, don't know your name),

See THIS thread AND it's "subthread" in it.

http://www.mycockpit.org/forums/showthread.php/21881-Using-BU0836X-and-other-BU0836-cards-with-SIOC-scripts

Hessel