Hello i need a Idea how run a DC Motor but monitoring the voltage with a A/D pin.
my problem is my Volt Divider is not Stable so mi reading are no correct.
10k and 10.5k in my Divider
Hello i need a Idea how run a DC Motor but monitoring the voltage with a A/D pin.
my problem is my Volt Divider is not Stable so mi reading are no correct.
10k and 10.5k in my Divider
Last edited by jetpr; - 23rd January 2008 at 00:48.
My Hobbies is PicBasic PRO
Hi, ...
Just read the voltage ... during OFF periods of the PWM drive ...
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 ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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that you mean i have to turn off the motor to read the volts
or
please send a example
thanks
My Hobbies is PicBasic PRO
Motor is turned off automatically during PWM off ( or LOW ) periods ...
just sample and hold during this moment.
that's how all ESCs current limiting devices work ... they just sample the power mosfets voltage loss ( = Intensity * Rds ON ... ), and compare with a reference.
Here, the "free running" ( PWM LOW state ... ) voltage of your motor is proportionnal to the rotor speed ...
That's all !!!
************************************************** ***********************
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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