These GPIO pins are dedicated to the LEDS. They do not go to the expansion headers.
Gerald On Fri, May 2, 2014 at 11:25 AM, <[email protected]> wrote: > 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]> 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#Expa >>>> nsion_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. > -- 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.
