jemhayward wrote: > Ah! I think I can modify this to do what I want. If I use a relay held > open by the offboard PSU 5v and a 6V rechargeable battery pack (need to > isolate the relay from the battery pack somehow...) then when the > external PSU goes down, the relay closes, and that initiates shutdown, > and then the 6V battery powers the board until its completely shut down. > I then need a way to disconnect the battery, or it will go flat - or I > could possibly use a big capacitor?
To elaborate a bit on my previous post, this is what you could do: Use the advanced power on / off button as documented in post #1514 and add a relays and a diode to switch the mains for your audio rack, like this: 15839 You can even put the relays in a small enclosure like this: 15840 By doing this, your Wandboard power button now switches on and off the WB and the rest of your gear in your rack. +-------------------------------------------------------------------+ |Filename: behuizing.jpg | |Download: http://forums.slimdevices.com/attachment.php?attachmentid=15840| +-------------------------------------------------------------------+ M-DAC, Cambridge Audio Azur 840E, Focal MP1200, Focal Electra 1028 Be 1 x SB3, 1 x SB Boom, 1 x SB Radio and 2 x SB Touch - all wireless 1 x Wandboard Dual behind the bedroom ceiling 1 x Wandboard Dual for 'msqueeze' (http://www.msqueeze.co.nf/index.html) project ReadyNAS NVX running LMS 7.8.0. iPeng 7 on iPhone. SqueezePad & iPeng 7 on iPad. http://www.last.fm/user/phibon ------------------------------------------------------------------------ Pascal Hibon's Profile: http://forums.slimdevices.com/member.php?userid=7969 View this thread: http://forums.slimdevices.com/showthread.php?t=99395 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
