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Hi,
The answer is quite simple :
360° + 3 decimals = 360 000 steps ... 19 bits !
360° + 2 decimals = 36000 steps ... 16 bits
How do you do that with a 10 or 12 bits ADC ???
try to look at 16 to 20 bits ADCs.
Now, JUST for calculations ...
3 decimals ... need at least PBPL and a Pic 18 ... Why not.
The final smile ... what about your position sensor precision and linearity ???
Alain
2 decimals Ok
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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Thank you for your fast reply
yes you are right, So 360 / 4096 = 0.087 deg
The linearity is ok as it is an absolute magnetic encoder
I would like to display the result on an LCD in a xxx.xx format or xxx.xxx
even if it does not reach its final resolution and the last digits are not correct or rounded
Any help welcome
Walter
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Hello Walter,
Look at this/these posts:
http://www.picbasic.co.uk/forum/showthread.php?t=9011
http://www.picbasic.co.uk/forum/showthread.php?t=8355
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
.
Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
.
There simply is no "Happy Spam" If you do it you will disappear from this forum.
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thank you joe, but value's are getting to big to fit in a 16bit var
I thnk I need help from the Mathematics guy's
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That is most positively not meOriginally Posted by RFsolution
Last edited by Archangel; - 4th September 2008 at 22:54.
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
.
Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
.
There simply is no "Happy Spam" If you do it you will disappear from this forum.
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Post a little code and an example of the values you are getting.but value's are getting to big to fit in a 16bit var
And maybe think about upgrading to 2.5. The LONGS are cool.
Dave
Always wear safety glasses while programming.
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Thanks Dave,
Can you point me how to use the LONGS because when reading the PBP manual (online version and PDF @ melabs) they say 16bit is the maximum
If i try to compile more than 16bit it give's me an error (i upgraded to 250.B and use MPASM)
Are we talking about the same PICbasic ? I use Picbasic PRO from melabs
Post a little code and an example of the values you are getting.
And maybe think about upgrading to 2.5. The LONGS are cool.
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