I have decided to use GPIO pins of the processor. Minhaj
On Thursday, 19 June 2014 00:03:27 UTC+5:30, john3909 wrote: > > > From: <khajam...@gmail.com <javascript:>> > Reply-To: "beagl...@googlegroups.com <javascript:>" < > beagl...@googlegroups.com <javascript:>> > Date: Tuesday, June 17, 2014 at 11:08 PM > To: "beagl...@googlegroups.com <javascript:>" <beagl...@googlegroups.com > <javascript:>> > Subject: Re: [beagleboard] Re: help regarding BLDC motor interfacing with > beagleboneblack > > Actually my project involved Beaglebone B and I have completed other > features on it. BTW, I need to control 4 BLDC motors and I need atleast 24 > PWM channels for this. > > So make a C2000 cape. Use I2C or SPI to communicate between the BBB and > the C2000 controller. Timing on the PWM is way more accurate than the other > devices that have been suggested. > > Regards, > John > > > > On Wednesday, 18 June 2014 09:48:55 UTC+5:30, john3909 wrote: >> >> >> From: <khajam...@gmail.com> >> Reply-To: "beagl...@googlegroups.com" <beagl...@googlegroups.com> >> Date: Tuesday, June 17, 2014 at 8:50 PM >> To: "beagl...@googlegroups.com" <beagl...@googlegroups.com> >> Cc: <khajam...@gmail.com> >> Subject: [beagleboard] Re: help regarding BLDC motor interfacing with >> beagleboneblack >> >> All ICs I found, have fixed frequency with variable duty cycle. I think >> programmable frequency with variable duty cycle is must to drive BLDC >> motor. Is that right? >> Can you please suggest one IC. >> >> If you want to control BLDC motor, why not use C2000 controller. It is >> low cost and specifically designed for this purpose. >> >> >> http://www.ti.com/lsds/ti/microcontroller/32-bit_c2000/c28x_piccolo/overview.page >> http://www.ti.com/lsds/ti/apps/motor/applications.page >> >> Regards, >> John >> >> >> >> >> On Wednesday, 18 June 2014 01:25:39 UTC+5:30, jmelson wrote: >>> >>> >>> >>> On Tuesday, June 17, 2014 5:14:00 AM UTC-5, khajam...@gmail.com wrote: >>>> >>>> Hi jmelson ! >>>> I am making my own cape. >>>> I have found one PWM controller (TLC59116) from TI >>>> http://www.ti.com/lit/ds/symlink/tlc59116.pdf >>>> but it says individual channels are adjustable but with a fixed >>>> frequency of 97 khz. Would that be enough or adjustable frequency is a >>>> must >>>> feature for BLDC motor. >>>> >>>> >>>> 97 KHz may work for some motor drive setups, but that frequency may be >>> so high that the power transistors or driver circuits will >>> run hot. You'd have to look at specific power stages to decide whether >>> 97 KHz is suitable or not. Most motor drives run between >>> 20 and 50 KHz. >>> >>> Jon >>> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to beagleboard...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> >> -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard...@googlegroups.com <javascript:>. > For more options, visit https://groups.google.com/d/optout. > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
