Nice, that looks like a great part. I'll check into it for future prototyping. Thanks Bill
On Saturday, March 7, 2015 at 12:30:50 PM UTC-8, William Pretty Security wrote: > > Try this, instead of FET’s: > > > > The IC allows you to have separate supplies for the logic and the ‘motor’. > > So you can run the LED’s from 12V and the logic from 3.3V J > > > > That’s how I drive motors …. > > > > Bill > > > > "No one could make a greater mistake than he who did nothing because he > could do only a little." > > "All that is necessary for the triumph of evil is that good men do > nothing" Edmond Burke *(1729 - 1797)* > > > http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book > > http://ca.linkedin.com/pub/bill-pretty/2b/b07/602 > > > > > > *From:* beagl...@googlegroups.com <javascript:> [mailto: > beagl...@googlegroups.com <javascript:>] *On Behalf Of *gr...@sensa.io > <javascript:> > *Sent:* Saturday, March 07, 2015 2:18 PM > *To:* beagl...@googlegroups.com <javascript:> > *Subject:* Re: [beagleboard] Re: BeagleBone Black won't boot after wiring > up LED strip w MOSFETs and separate 12V power supply > > > > JS-BBB, that's about as good of an explanation as I'm probably going to > get. I wish I knew exactly what it did to the board, but at least that > gives me some peace of mind. > > On Friday, March 6, 2015 at 9:14:56 PM UTC-8, William Pretty Security > wrote: > > Also, I believe the RasPi uses 5V logic while the BBB uses 3.3V logic /IO > > > > "No one could make a greater mistake than he who did nothing because he > could do only a little." > > "All that is necessary for the triumph of evil is that good men do > nothing" Edmond Burke *(1729 - 1797)* > > > http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book > > http://ca.linkedin.com/pub/bill-pretty/2b/b07/602 > > > > > > *From:* beagl...@googlegroups.com [mailto:beagl...@googlegroups.com] *On > Behalf Of *JS-BBB > *Sent:* Friday, March 06, 2015 11:01 PM > *To:* beagl...@googlegroups.com > *Subject:* [beagleboard] Re: BeagleBone Black won't boot after wiring up > LED strip w MOSFETs and separate 12V power supply > > > > > 1st of all IF you used the FETs shown on Adafruit they are logic level > FETs, so you can drive them directly from the BB. > > Resistors are only required if you had used the transistors instead of the > FETs. > > As discussed you missed the GND wire (Black) as shown on Adafruit. > > Where did you measure the 200mV? From the BB GND to the outputs or > elsewhere? As you don't have a common GND readings are pretty much > meaningless. > > FETs have a "large" capacitance on the Gate, without a common ground you > could have several hundred (or thousands) volts of static charge for a very > short period, but it could be large enough to kill the processor. Very > likely if you have carpets around. > > If you unplug everything you added to the BB will it boot up again? If not > the above may be possible. > > You seem to be using P9_12, P9_16 and P9_21 they should be safe to use as > I'm using them on a couple of projects without problems, you MUST add the > GND wire from any pin 1 or 2 of either P8 or P9 to the GND track of your > breadboard. > > I may think of something else later on....... meanwhile, as I said above, > unplug everything from the BB and see if it powers up, if not it's shopping > time again. > > -- > 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. > ------------------------------ > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2015.0.5646 / Virus Database: 4299/9212 - Release Date: 03/02/15 > > -- > 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. > ------------------------------ > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2015.0.5646 / Virus Database: 4299/9212 - Release Date: 03/02/15 > -- 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.
