BeagleBone Black System Reference Manual Rev C page 113| (in bright red font):
"There are several precautions that need to me taken when working with the expansion headers to prevent damage to the board. 1) Do not apply any voltages to any I/O pins when the board is not powered on. 2) Do not drive any external signals into the I/O pins until after the VDD_3V3B rail is up. 3) Do not apply any voltages that are generated from external sources. 4) If voltages are generated from the VDD_5V signal, those supplies must not become active until after the VDD_3V3B rail is up. 5) If you are applying signals from other boards into the expansion headers, make sure you power the board up after you power up the BeagleBone Black or make the connections after power is applied on both boards. Powering the processor via its I/O pins can cause damage to the processor." Those kind of assumptions might kill your board. LP On Wednesday, July 30, 2014 12:38:31 PM UTC+2, karlka...@gmail.com wrote: > > > Am Dienstag, 29. Juli 2014 20:52:22 UTC+2 schrieb Brandon I: >> >> sink 8mA >> >>> >>> > So setting a GPI to HIGH just by connecting it to 3.3V directly would be a > problem? I assumed GPIO-inputs are always high-resistance!? > > -- 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.
