I think when I pick up a couple of these this summer, I will try incorporating an ultracapacitor-based "UPS" that can hold up power for the ten seconds required for a true shutdown, along with powerfail detection to initiate the shutdown. The Raspberry Pi took well over 30 seconds for a shutdown, which seemed likely to be too long for a simple powerfail scheme. Otherwise these boards seem almost perfect for my applications.
-- Ralph ________________________________________ From: Jon Elson [el...@pico-systems.com] Sent: Wednesday, April 24, 2013 9:21 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] "Black BeagleBoard: available at $45" (was LinuxCNC would be very nice on the UDOO board.) Kent A. Reed wrote: > I wonder if the built-in flash memory of the new > BeagleBone Black can have this problem too? That would be a nasty surprise. > Yeah, this really made my ears perk up, too, with all the talk about failed SD cards. If these on-board memories suffer the same problem, they have a BIG disaster looming! But, if you only use the on-board memory for the boot directory, and have the Linux / directory on an external SD card, then there probably is no problem, especially if you can prevent all writes to the internal memory. if it is never written, it will never have to invoke the wear-leveling, which is at least thought to be related to the failures. Jon ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
