Hi, OK i solved the 3.3V problem with a load switch, thanks again.
One more thing, i put the BBB inside a box and need to check the power led without open the box. So i'm trying to move the BBB's power led outside of the box. I find the pins of user leds in the BBB_SRM; USR0 --> GPIO1_21 USR1 --> GPIO1_22 USR2 --> GPIO1_23 USR3 --> GPIO1_24 But I didn't find the GPIO pins in Expansion Header of P9 pinout and P8 pinout. Is there any additional source which can i look? Thanks, Ugur On Thursday, May 1, 2014 4:58:17 PM UTC+3, Gerald wrote: > > 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] <javascript:>> 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] <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 [email protected]. For more options, visit https://groups.google.com/d/optout.
