<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'><span style="color: rgb(0, 0, 0); font-family: Arial; font-size: 12pt; ">This may be where my programming knowledge falls short but I'm not sure you can set a frequency per I/O pin. (That's where i was going originally before the thin trail of smoke erupted.)</span><div style="color: rgb(0, 0, 0); font-family: Arial; font-size: 12pt; "><br></div><div style="color: rgb(0, 0, 0); font-family: Arial; font-size: 12pt; "><span id="ecfc5ded-6bd2-4fa5-ae76-36cd5f8a39ac"></span>The PWM outputs I *think* are frequency-adjustable, but hadn't gotten there yet. (And I may still pursue that route)</div><div style="color: rgb(0, 0, 0); font-family: Arial; font-size: 12pt; "><br></div><div><font class="Apple-style-span" face="Arial" size="3">One problem I ran into with the original circuit was that the Freq-to-Aircore driver chips had a non-linear response curve. (More like a </font><font class="Apple-style-span" face="Arial">logarithmic</font><font class="Apple-style-span" face="Arial" size="3"> response curve and I would probably need to build reference tables to remove that log behavior)</font><br><div style="color: rgb(0, 0, 0); font-family: Arial; font-size: 12pt; "><span id="ecfc5ded-6bd2-4fa5-ae76-36cd5f8a39ac"><br></span></div><div style="color: rgb(0, 0, 0); font-family: Arial; font-size: 12pt; "><span id="ecfc5ded-6bd2-4fa5-ae76-36cd5f8a39ac">Gotta crack a few eggs to make an omelet I guess.</span></div><div style="color: rgb(0, 0, 0); font-family: Arial; font-size: 12pt; "><span id="ecfc5ded-6bd2-4fa5-ae76-36cd5f8a39ac"><br></span></div><div style="color: rgb(0, 0, 0); font-family: Arial; font-size: 12pt; "><span id="ecfc5ded-6bd2-4fa5-ae76-36cd5f8a39ac">Now, for the serial plan... What I hope for is to have a single data line shared by all CS4122 chips , with multiple CLK lines. (One per chip)<br><br>I love research! :-0<br></span><br>----- Original Message -----<br>From: raysot@comcast.net<br>To: "Simulator Cockpit Builder's List" <simpits-tech@simpits.org><br>Sent: Tuesday, February 22, 2011 1:50:49 PM<br>Subject: Re: [simpits-tech] Arduino, Part Deaux...<br><br>Got me some of these:<br>CS4122<br><br>Mouser still has them. I've never soldered a SOIC device before... looks like a trip to Fryes is warranted!<br><br><br>----- Original Message ----- <br>From: "Gene Buckle" <geneb@deltasoft.com> <br>To: "Simulator Cockpit Builder's List" <simpits-tech@simpits.org> <br>Sent: Tuesday, February 22, 2011 12:55:14 PM <br>Subject: Re: [simpits-tech] Arduino, Part Deaux... <br><br>On Tue, 22 Feb 2011, raysot@comcast.net wrote: <br><br>> <br>> For data to work, it must be beautiful :-) <br>> <br>> Yep! Gonna fight those H-Bridges every step of the way. <br>> <br>> The Serial link seems a more elegant solution. I could [probably] get <br>> the arduino to work supporting multiple h-bridges but I think the timing <br>> issues would really be a problem (for me) since the Arduino is a <br>> single-threaded system. <br>> <br>Well keep in mind that if memory serves, you don't need multiple threads <br>to drive those things. You set a value on the port and it'll stay there <br>until you tell it otherwise. I could be wrong of course - I haven't had <br>time to play with them yet. <br><br>What chip did you find for driving the air-cores serially? <br><br>g. <br>> In my upcoming attempt I'm excited about grabbing a byte, then sending <br>> it to the appropriate aircore driver. Seems simple... <br>> <br>> (As long as I don't smoke check Arduino #2 things should go much better!) <br>> <br>It's a good reason to keep some of the ATMega328 PDIP based versions of <br>the Arduino handy. If you cook it, you just stick the bootloader on a new <br>one and go. You'll need to build an ICP cable or have an STK500 (or <br>similar) programmer to burn the bootloader on it though. <br><br>g. <br><br><br>-- <br>Proud owner of F-15C 80-0007 <br>http://www.f15sim.com - The only one of its kind. <br>http://www.simpits.org/geneb - The Me-109F/X Project <br><br>ScarletDME - The red hot Data Management Environment <br>A Multi-Value database for the masses, not the classes. <br>http://www.scarletdme.org - Get it _today_! <br><br>Political correctness is a doctrine, fostered by a delusional, illogical <br>minority, and rabidly promoted by an unscrupulous mainstream media, which <br>holds forth the proposition that it is entirely possible to pick up a turd <br>by the clean end. <br>_______________________________________________ <br>Simpits-tech mailing list <br>Simpits-tech@simpits.org <br>http://www.simpits.org/mailman/listinfo/simpits-tech <br>To unsubscribe, please see the instructions at the bottom of the above page. 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