**** BEGIN LOGGING AT Sat Apr 29 03:00:01 2017 Apr 29 06:16:29 hello Apr 29 08:30:16 hi! Anyone online? Apr 29 08:31:46 Hi! Anyone online? Apr 29 10:25:25 does anyone knows how to create hotspot with WEP in Beagle Board Green Wireless? Apr 29 10:29:35 Did you mean: 'create an unencrypted hotspot'? Apr 29 11:58:56 hi Apr 29 11:59:54 I was wondering if the beaglebone black could survive in a vacuum environment. thank you Apr 29 12:02:34 I think that is not the usual question. May I ask about the background of it? Apr 29 12:03:04 Sure, its 8mbar vacuum environment Apr 29 12:03:59 a kind of experiment or production env? Apr 29 12:04:27 actually for the spacex hyperloop competition, to run in the tube, they pump down the tube to 8mbar. Apr 29 12:06:48 ok. Apr 29 12:07:51 I think there are several aspects. e.g. it may contaminant your vacuum. but that of cause is only relevant if the vacuum itself is the goal for whatever reason. Apr 29 12:08:03 also heat could and will likely be a problem. Apr 29 12:08:21 I would expect that beside this it could work. Apr 29 12:08:33 if it would work in space is another thing. Apr 29 12:08:36 ok true. do you know if anyone has every tested it in vacuum? Apr 29 12:08:45 no. Apr 29 12:08:56 but would love to read about such a test. :) Apr 29 12:18:45 yea haha ok myself also. do you work at beagle? or just an engineer? Apr 29 12:19:52 just some random software developer that happened to have a project on a BBB. Apr 29 12:20:08 haha ok cool. Apr 29 12:20:18 thanks for advice :) Apr 29 12:20:22 :) Apr 29 12:43:45 Join Apr 29 12:44:01 Hey yo Apr 29 18:02:04 Hi, it seems I have bricked my new beagle bone black wireless by following the WiFi instructions hidden in /etc/network/interfaces (I cannot find any other WiFi instructions anywhere) Apr 29 18:02:15 They were: Apr 29 18:02:16 #connmanctl #connmanctl> tether wifi disable #connmanctl> enable wifi #connmanctl> scan wifi #connmanctl> services #connmanctl> agent on #connmanctl> connect wifi_*_managed_psk #connmanctl> quit Apr 29 18:03:52 Ok, I lied, I did find similar instructions via google, but all of them omitted the "tether wifi disable" instruction and so gave me no results from the "services" command. Apr 29 18:04:34 Once I did this the remaining connmanctl instructions seemed successful. However upon typing quit and hitting return, the connection froze Apr 29 18:04:56 I found the IP the BBB connected to via my router but the BBB did not respond on it. Apr 29 18:05:41 I tried power cycling and connecting to the WiFi IP with no luck. I connected the USB connection and tried the tethered IP again and that did not work either. In both cases the connection timed out Apr 29 18:06:55 I can follow instructions for using an SD card to reflash the system, but I'm not sure how I would avoid bricking the system again Apr 29 20:49:58 Hi! Can anyone help in creating the hotspot in BeagleBone Green Wireless? Apr 30 01:54:44 Hey all Apr 30 01:55:45 Does anyone know what the BBBlue's blinking LED sequences mean. I've got the Red, Green, and Power On LED blinking in sequence; however, I can't find any documentation that tells me what they mean. Apr 30 01:57:07 Also, is there a best time to come on here and chat? Apr 30 02:10:04 varies Apr 30 02:10:44 people are in all sorts of timezones, and many may only occasionally glance at the chat... generally the best strategy is to just ask a question and leave the connection open Apr 30 02:12:01 Fair enough :) Apr 30 02:12:08 I'll be sure to do that. Apr 30 02:12:10 I don't have a blue myself, but in general: Apr 30 02:12:43 1. power led should be just that: a power led. it should normally stay on unless you explicitly power off the system Apr 30 02:13:54 2. the four user leds (USR0-USR3, blue leds on bbb) are configurable Apr 30 02:15:07 with the default bootloader they turn on in sequence to indicate boot progress, then they switch to their default functions defined in DT (heartbeat, μSD access, cpu activity, eMMC access) Apr 30 02:15:31 the blue also has a wifi led apparently Apr 30 02:15:52 I think actually the other wireless beaglebones might too, I recall seeing one in schematics Apr 30 02:16:02 My issue is that when I plug in a charged LiPo, the Red, Green, and Power On LEDs blink in sequence. If I have a DC adapter plugged in the USR LEDs blink as per normal and the board boots. It's only when I have LiPo plugged in that I'm having problems. Apr 30 02:16:25 blink in sequence, as in the power led turns off too? Apr 30 02:16:43 Yes Apr 30 02:17:06 that sounds to me like the lipo is unable to provide sufficient power Apr 30 02:17:45 I thought so too, but it's a 1.3 Ah 7.4V LiPo, which is what's recommended on the Wiki for the board. Apr 30 02:19:09 I don't know if there's variation between the current delivery ability of LiPos Apr 30 02:19:58 neither of the two numbers quoted states how much power you can draw :) Apr 30 02:20:50 The battery I have is rated (I think) for 30 C, which I think means that I can draw 30x1.3Ah safely. Apr 30 02:21:15 that's.... definitely sufficient Apr 30 02:21:41 ("worrisome" is actually more the word that comes to mind) Apr 30 02:22:07 I know, it's pretty frustrating. Apr 30 02:22:16 30x1.3A btw Apr 30 02:22:43 Ah is a unit of charge Apr 30 02:23:11 Cheers, I've not done a lot with LiPo and batteries before. Apr 30 02:24:06 and I meant worrisome since 40A is a scary amount of current... if the battery can deliver that, you really don't ever want to short circuit that :) Apr 30 02:24:55 Yeah, I guess that's why LiPo's are considered dangerous. Apr 30 02:25:10 That is, if they're not taken care of etc. Apr 30 02:25:57 but I have no idea why it's not working then. I'd probably grab a scope to measure some voltage rail(s) to see what's happening, but not everyone has a scope lying around Apr 30 02:27:09 In any case, all I can think of is that a chip's saying the power isn't good, i.e. one of the PGOOD lines are low (from the schematic). I'll go into work later this afternoon and see what the test points have to say. Apr 30 02:27:56 the power led being off is a fair hint that the pmic doesn't like the power source Apr 30 02:27:58 But I really appreciate your time; it helps to have someone to chat to about problems. Apr 30 02:28:29 (or there's a short circuit somewhere downstream, but that wouldn't depend on how you supply power to the board) Apr 30 02:29:06 PGOOD is the very last signal from the PMIC that goes high, at the end of the power up sequence Apr 30 02:31:19 you can find a bit more info on power-up sequence here -> http://elinux.org/BeagleBone_Power_Management note that although that page occasionally mentions "battery", you should ignore that since the BBBlue's battery works totally different Apr 30 02:31:42 Awesome, thanks for that. I'll check it out shortly. **** ENDING LOGGING AT Sun Apr 30 03:00:01 2017