Well sticking a 1K in parallel with the wiper and gnd does show a great improvement on the scope trace... will just have to wait to see how it performs with a loco
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Well sticking a 1K in parallel with the wiper and gnd does show a great improvement on the scope trace... will just have to wait to see how it performs with a loco
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Woohoo! Sweet! now depending what you need, 2-3K curve seems nice to me... but i'm not the guy who drive this locoOriginally Posted by malc-c
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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Archives !
Hi, Malc
I do not know wich pic you really use ... but if it is the same as in your Listing ( 16F767)
you should have a look to Post #8899 from Bruce ... ( Jul 2003 )
Alain
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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Well I've searched for posts older than a year from Bruce and the stupid search engine still brings up posts dated 2007 !
Any chance of a direct link as I amd using that PIC
Malc
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i think it's that one
http://www.picbasic.co.uk/forum/show...ghlight=16f767
but it's may 2005
anyways, by searching with post#... you'll redirected there
http://www.picbasic.co.uk/forum/showpost.php?p=8899
which is the same
Last edited by mister_e; - 25th April 2007 at 17:44.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
|
Hi, Steve
Ok, You're right !!! 2003 is my join year ...
don't you think 3 nice working channels are better than 2 " not so good " ???
But I still do not understand why Malc wants to read its pots @ 150 Hz ...
may be timing issues he gets come from here !!!
Alain
Alain
************************************************** ***********************
Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
*****************************************
|
From what i remind 150Hz is less noisy for those motors. And it's also a kind of limitation of the SSPWM as well.
Sure, the noise you hear from your motor is the PWM frequency. Depending the accuracy you need and the OSC you're the maximum PWM frequency should be in the 'yes i can hear that frequency' range
PicMultiCalc came handy... @8MHZ 30KHz PWM give 9 bit accuracy (well 0-267). Question is... how the motor will react to this... i worry a little bit about the output transistor efficiency already in use for that frequency range. Maybe good enough. Don't remind the whole specs.
Last edited by mister_e; - 25th April 2007 at 17:51.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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