<html>
<head>
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 10pt;
font-family:Tahoma
}
--></style>
</head>
<body class='hmmessage'><div dir='ltr'>
---- Roy Coates <roy@flightlab.liv.ac.uk> wrote: <br>> On 15 July 2011 18:50, <dabigboy@cox.net> wrote: <br>> <br>> Correct! I'm using Phidget servo drivers to make em move, and Bodnar boards <br>> to read the positions. <br> <br>How are you interfacing to the Bodnar board, are you using pots and the analog <br>inputs to measure instrument position (basically, re-creating the servo's <br>functionality, which is the path I'm leaning towards if I don't use winch <br>servos)? <br> <br>> Just ordered a Butt-Kicker too for some subtle 'feeling' in the cockpit. <br>> This is in addition to a powerful sub-woofer bolted under the seat ;-) <br> <br>This is the first I've heard of this device....let us know how it goes, it looks <br>promising (and cheap!). The Frasca heli sim I flew last month used some sort of <br>vibration or butt-kicker-like device and it did add a lot to the experience, <br>especially when descending into your own rotor-wash (which turned out to be not a particularly wonderful idea).<br> <br>> The list so far... <br>> <br>> 2 Bodnar boards (pitch/roll/yaw/throttle/trim/carb heat/mixture/flaps/read <br>> servo pos/switches) <br>> 2 Phidget servo boards (to drive instrument servos) <br>> 2 Phidget Analogue-4 boards (to drive real gauges such as fuel qty, oil temp <br>> etc) <br> <br>Are you using variable voltage to drive air-core motors? I have just recently been <br>doing some research on air-core movements and it looks like this would be <br>possible, but I'm not sure yet.....people keep talking about H-bridges and other <br>intermediary circuits. I think I can actually just use two digital outputs on my Phidget IO kit and pulse-width modulation to send the right "voltage" to the terminals of the flap gauge I got off ebay....I've determined that my gauge can be set by varying DC voltage, but I really don't know if it's an air-core motor....I'm pretty sure it is.<br> <br>Matt <br> </div></body>
</html>