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PICList Thread
'RC Speed Control. WAS(Code for v-tail mixer?)'
1997\05\15@102629 by Jason E. Brown

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       At 09:35 AM 5/15/97 +0200, you wrote:
>Andy Kunz writes:
>> It takes two inputs ranging from 0 to 208, producing two independent
>> outputs ranging from 0 to 208, with neutral at 104.  0 ==> 980uS, 104 ==>
>> 1500uS pulse, 208 ==> 2080uS.  This implies 5uS resolution, with a 980uS
>> threshold.
>
>On another note, Andy, how accurate are the pulse widths from R/C
>controllers. I know that they are nominally 1 to 2 ms long but do some
>R/C controllers, for whatever reason, produce pulse widths outside
>this range? I guess from the fact that you only have inputs from 0 to
>208 that the R/C controllers never produce pulse widths outside this
>range. But have you actually checked that this is the case. I am
>interested in what you have to say on this because as soon as I have
>my 16F84 programmer ready I want to try building an R/C speed
>controller.
>
>BTW, Did anyone else almost faint at the size of yesterday's PICLIST
>digest? I was glad when I found that half of those 3580 lines were
>taken up with encoded attachments and not reading material.

Yeah, you have to give a little lee-way on the pulse widths.   They are
analog values derived from a pot after all..

I have just "finished" , well I am ready for some final testing for my RC
speed control..

I have the source code here, I am not sure if I should post it to the
PICLIST.  It is about 350 lines..
Can someone tell me if that is too long for the list???
I'd loke some people to look at the code and give me comments, opinions,
suggestions,  etc...


Jason E. Brown
Other Worlds
3801 Dayton Blvd
Chattanooga TN 37415
(423)870-1074

spam_OUTothrwrldTakeThisOuTspamcdc.net = business.
.....jebrownKILLspamspam@spam@cdc.net   = me.

1997\05\15@112312 by Andy Kunz

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>I have the source code here, I am not sure if I should post it to the
>PICLIST.  It is about 350 lines..
>Can someone tell me if that is too long for the list???
>I'd loke some people to look at the code and give me comments, opinions,
>suggestions,  etc...

I'm sure there are people here who would like to look at it, but don't post
it to the list, please.  WHy don't you just mail it direct to people who
want to look.

Andy

======================================================================
Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865 USA
             Electronics for Industry & R/C Hobbyists
        "Go fast, turn right, and keep the wet side down!"
======================================================================

1997\05\15@112926 by Raak, Cory

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I owuld like the code listing!!!!


{Quote hidden}

1997\05\15@113325 by Luciano Cadaval Basso

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Raak, Cory wrote:
>
> I would like the code listing!!!!
>

Me too!

{Quote hidden}

1997\05\15@131806 by Stephen Holland

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I would like a copy of the source code please...

1997\05\15@231638 by Andrew Russell Morris

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At 11:14 AM 5/15/97 -0400, you wrote:
>>I have the source code here, I am not sure if I should post it to the
>>PICLIST.  It is about 350 lines..
>>Can someone tell me if that is too long for the list???
>>I'd loke some people to look at the code and give me comments, opinions,
>>suggestions,  etc...
>
>I'm sure there are people here who would like to look at it, but don't post
>it to the list, please.  WHy don't you just mail it direct to people who
>want to look.
>
>Andy
>
>======================================================================
>Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865 USA
>              Electronics for Industry & R/C Hobbyists
>         "Go fast, turn right, and keep the wet side down!"
>======================================================================
>Please send me a copy. I'm interested in PWM motor speed control for
another application. Thanks.

1997\05\17@171126 by Ian Raymond Douglas

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Me three please!!!


On Thu, 15 May 1997, Luciano Cadaval Basso wrote:

{Quote hidden}

1997\05\17@235702 by Mike Smith

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> I have the source code here, I am not sure if I should post it to the
> PICLIST.  It is about 350 lines..
> Can someone tell me if that is too long for the list???
> I'd loke some people to look at the code and give me comments, opinions,
> suggestions,  etc...

I hate to post 'me too' type things - but I'd be interested in seeing the
code if you aren't going to do a general post here.

MikeS
<RemoveMEmikesmith_ozspamTakeThisOuTrelaymail.net>

1997\05\19@193940 by Andy Shaw

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Hi Jason,
I've been playing around using PICs for control of Radio control
submarines for a while now and have implemented various
pulse width schemes and servo control output. I would
love to take a look at your code. I make use of 16c71 (I need
the A/D for tilt and pressure inputs). In my version I finally
decided to make use of a range of -64..+64 with -64 = 1ms
and +64=2ms. I trim out of range inputs to this range. I have
to do a fair amount of processing of the input values combining
them with pressure inputs etc. and I find that having this type
of range lets me to virtually all of the calculations in 8 bit
arithmetic. I do lose out on resolution but this is not really
a big problem for me (the noise from the sensors I use is
at least as big as this loss!).

Andy

>I have the source code here, I am not sure if I should post it to the
>PICLIST.  It is about 350 lines..

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