3 pwm PIC

[Hans van Veldhuizen]

Hello,
I want to control 3 small motors with PWM. How can I find a PIC that can do that?
greetings
Hans

[Pinhead]

Hi Hans,

There are tons of PICs capable of doing this.

To find the one that suits you need, go to this page on the Microchip website: 

https://www.microchip.com/en-us/parametric-search.html/717?filters=JTdCJTIyY2F0ZWdvcnlkcm9wZG93biUyMiUzQSU1QiUyMk1pY3JvY29udHJvbGxlcnMlMjBhbmQlMjBNaWNyb3Byb2Nlc3NvcnMlMjIlMkMlMjI4JTIwLSUyMGJpdCUyME1pY3JvY29udHJvbGxlcnMlMjIlMkMlMjI4LWJpdCUyMFBJQyUyME1DVSUyMiU1RCU3RA==

And in the filters (button on the left), there are three lines where you can set the number of PWM's you need.  Scroll down a bit and they will appear.

In the filtered list you can choose the one you like....

Hope this helps

Le 05-09-24 à 17:20, Hans van Veldhuizen a écrit :

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[David VB]

Be sure to select if you want a complementary output if you need your motors to go both directions and if you don't have an external driver who does the work of generating the complementary waveforms (Microchip also have a lot of those -- see their Motor Drivers section)

[Hans van Veldhuizen]

Hello,
I still have a few 16F15324 lying around and when I look at the list it should indeed give 3 PWM outputs. but how do I do that???
I don't understand anything from ppl.
greetings
Hans

Op donderdag 5 september 2024 om 17:32:31 UTC+2 schreef David VB:

[Hans van Veldhuizen]

Have found a16F15324 led  sample and changed, is this correct:

-- PWM setup. We need to map the two PWM outputs to the relevant pins.
include pps
pps_control_lock(FALSE)                     -- unlock PPS module
RC3PPS = PPS_PWM3OUT                        -- pin_C3 is PWM3
RC5PPS = PPS_PWM4OUT                        -- pin_C5 is PWM4
RC4PPS = PPS_PWM5OUT                        -- pin_C4 is PWM5------------  added
pps_control_lock(TRUE)                      -- lock PPS module
pin_C3_direction = output                   -- don't forget to set this to output
pin_C5_direction = output                   -- don't forget to set this to output

pin_C4_direction = output                   -- don't forget to set this to output-----------  added
include pwm_hardware                        -- fetch PWM library
pwm_max_resolution(1)                       -- max res. with highest possible freq.

Op donderdag 5 september 2024 om 19:46:51 UTC+2 schreef Hans van Veldhuizen:

[Pinhead]

Hans,

The first question to know is the type of motor you want to control (stepper of classic, like a fan)

Second, you have to know if the motor will turn only in one direction or in both direction

Third, beware of the PWM frequency.  To control a motor, the frequency is important (much more than for controling LED's).   The highest frequency is not always the best since it can cause some mechanical resonance and other problems in the drivers with an excess of reverse current.

This is why it is also important to use a dedicated gate driver to control the Mosfet or MosfetS

Le 05-09-24 à 21:01, Hans van Veldhuizen a écrit :

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[Hans van Veldhuizen]

Hello Pinhead,
I use PWM for both small motors and larger ones with ready-made driver sets, but so far one or two. I think I now have a test version (which I still have to put together) see attachment.
If you have any tips, please let me know.
Thanks
Hans

Op vrijdag 6 september 2024 om 00:57:27 UTC+2 schreef Pinhead: