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[13:15:46] <joost_dtn> sometimes when issuing a poweroff command, it does shutdown and halt, but the power remains on
[13:16:26] <joost_dtn> i've got a test rig which is running 15 minutes power on, 15 minutes power off and a script which monitors the battery and initiates shutdown when the rig is running on battery power
[13:17:05] <joost_dtn> it should fully power down until the dc power is restored, but sometimes it either has issues releasing the NAND, and other times it has trouble killing cpu1
[13:20:42] <joost_dtn> so basically i'm using the battery for a ups-like setup to allow the a20-lime to properly shutdown to avoid nand corruption and data loss
[13:22:29] <joost_dtn> but if the a20-lime hangs before properlly powering off, the system does not restart after the dc power is restored
[13:22:30] <joost_dtn> that would be a bummer
[13:22:30] <joost_dtn> any suggestions?
[13:36:01] <shug_> hi all
[13:36:41] <shug_> May I ask a question ?
[13:39:53] <shug_> ok let's try
[13:40:15] <shug_> I would like to connect my Olinuxino A20 to the Chalk Elec 10" touchscreen
[13:40:46] <shug_> this screen need a power input of 5V 2A max (1.5A should be enough with backlight set to 100%)
[13:41:17] <shug_> I power my board with POE through the POE module V2 from Olimex (48V -> 12V)
[13:41:31] <shug_> I have a battery connected to the board
[13:42:39] <shug_> now if i would like to power my lcd with the POE output I need a step-down circuit to fall from 12v (POE module output) to 5V (lcd input), right ?
[13:43:06] <shug_> but If the main power fails, the board will switch to battery mode but not the lcd
[13:43:37] <shug_> so is there a way to power the lcd through the board ? with thr USB connector ? SATA ? GPIO ?
[13:43:58] <shug_> I'm wondering if those methods can give enough current (1.5A)
[13:44:25] <shug_> So let's lunch and see if anyone put a comment
[15:52:34] <shug_> 2 hours and no words
[15:52:51] <shug_> bye
[15:53:23] <lukas2511> haha
[16:21:53] <adj__> I don't know why, but I don't feel motivated to answer shug_
[19:58:33] **************** Logging Ended ****************
[19:58:43] **************** Logging Started ****************
IRC #olimex 2015-04-28
[13:15:27] <joost_dtn> i've got a a20-lime board with the OS running on NAND, an external disk for storage and a 1400mAh LiPo battery.[13:15:46] <joost_dtn> sometimes when issuing a poweroff command, it does shutdown and halt, but the power remains on
[13:16:26] <joost_dtn> i've got a test rig which is running 15 minutes power on, 15 minutes power off and a script which monitors the battery and initiates shutdown when the rig is running on battery power
[13:17:05] <joost_dtn> it should fully power down until the dc power is restored, but sometimes it either has issues releasing the NAND, and other times it has trouble killing cpu1
[13:20:42] <joost_dtn> so basically i'm using the battery for a ups-like setup to allow the a20-lime to properly shutdown to avoid nand corruption and data loss
[13:22:29] <joost_dtn> but if the a20-lime hangs before properlly powering off, the system does not restart after the dc power is restored
[13:22:30] <joost_dtn> that would be a bummer
[13:22:30] <joost_dtn> any suggestions?
[13:36:01] <shug_> hi all
[13:36:41] <shug_> May I ask a question ?
[13:39:53] <shug_> ok let's try
[13:40:15] <shug_> I would like to connect my Olinuxino A20 to the Chalk Elec 10" touchscreen
[13:40:46] <shug_> this screen need a power input of 5V 2A max (1.5A should be enough with backlight set to 100%)
[13:41:17] <shug_> I power my board with POE through the POE module V2 from Olimex (48V -> 12V)
[13:41:31] <shug_> I have a battery connected to the board
[13:42:39] <shug_> now if i would like to power my lcd with the POE output I need a step-down circuit to fall from 12v (POE module output) to 5V (lcd input), right ?
[13:43:06] <shug_> but If the main power fails, the board will switch to battery mode but not the lcd
[13:43:37] <shug_> so is there a way to power the lcd through the board ? with thr USB connector ? SATA ? GPIO ?
[13:43:58] <shug_> I'm wondering if those methods can give enough current (1.5A)
[13:44:25] <shug_> So let's lunch and see if anyone put a comment
[15:52:34] <shug_> 2 hours and no words
[15:52:51] <shug_> bye
[15:53:23] <lukas2511> haha
[16:21:53] <adj__> I don't know why, but I don't feel motivated to answer shug_
[19:58:33] **************** Logging Ended ****************
[19:58:43] **************** Logging Started ****************
