Just follow the link I sent. Do what ir says in whatever manner you choose. If you put 5V into P9-5 and P9-6, the board will be powered on, unless you press the power button causing it to power back down.
Gerald On Thu, May 1, 2014 at 2:15 AM, <[email protected]> wrote: > Hi, > > Thank you for your reply. > > Headers; > J1-J2-J3-J4-J5-J6-J7-J8-J18-J19-J20 / headers of valves, > J17 / header of pump, > J12-J13 / headers of digital input, > J9-J10 / headers of 12 volt and ground, > J14 / header of analog input. > > Grounds are not tied together because high current switch is occur in our > valve circuit. We separate 12 volt's ground and 5 V's ground. > > AIN4 and AIN6 pins voltage comes from analog sensor. They are certainly > less than 1.8 volt. > > Could i use a load switch to solve the problem (The 3.3V cannot come up > before the processor comes up) ? > And is there any problem to give voltage(5 Volt) to P9_5 and P9_6 while > it's turned off? > > Thanks, > Ugur > > > > On Tuesday, April 29, 2014 6:09:52 PM UTC+3, Gerald wrote: > >> I see lots of issues. Can you show what you have connected to what on >> your headers? >> >> Your 3.3V and 5V rails are on all the time. I suggest you take a look at >> the SRM to see how to handle the power. The 3.3V cannot come up before >> the processor comes up. You are violating that rule. >> http://www.elinux.org/Beagleboard:BeagleBoneBlack#Expansion_Header_Usage >> >> Any reason your grounds are not tied together? >> >> What voltage do you have coming into the AIN4 and AIN6 signals? >> >> >> Gerald >> >> >> >> On Tue, Apr 29, 2014 at 9:54 AM, <[email protected]> wrote: >> >>> Hi guys, >>> >>> I run 12V valves(insulated channels) and read pressure values by I2C >>> with my BBB board. I don't understand what has happened but two BBB were >>> broke down with this board. >>> >>> When i am plugging in my power supply; one of the broken BBB's LED is >>> not work, the other one's LED is on but does not open. >>> >>> I wonder if is there any mistake(shortage) in my board? >>> >>> There are the board's layout and schematic; >>> https://www.dropbox.com/s/tu3go2uei8ikryp/valf_layout.pdf >>> https://www.dropbox.com/s/dpziyloas6bttpl/Valf_schematic.PDF >>> >>> Thanks for your help in advance. >>> >>> Regards, >>> Ugur >>> >>> -- >>> 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 [email protected]. >>> >>> 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 [email protected]. > 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
