**** BEGIN LOGGING AT Wed Sep 07 02:59:58 2016 Sep 07 19:33:49 hey m_w There? Sep 07 19:34:35 yup Sep 07 19:35:14 m_w, How are you? Sep 07 19:35:37 I am looking for a graphics LCD that can be interfaced with BBB. Any suggestions? Sep 07 19:38:19 what kind of interface are you wanting for the LCD? Sep 07 19:38:55 https://www.sparkfun.com/products/12085 Sep 07 19:39:38 SPI m_w Sep 07 19:40:23 I am not sure about which would actually be able to withstand the output voltage of a BBB... Sep 07 19:42:03 https://www.adafruit.com/products/358 Sep 07 19:44:26 m_w would you expect a 4.5v power supply to 5v board Vin to let the smoke out? I thought maybe the board wouldn't manage to boot, but there was actually a puff of smoke... Sep 07 19:45:15 (not a BBB, an Arduino Yun, bit of a sidetrack) Sep 07 19:45:21 usually lower voltage than rated is much less spectacular than magic smoke Sep 07 19:46:05 this is strange Sep 07 19:46:32 It's a new power supply so now I'm suspicious of it, I was hoping for the best since Yun isn't very expensive (my multimeter died so I couldn't do my usual check of new supply yet) Sep 07 19:46:35 did you reverse the polarity of the voltage input? Sep 07 19:46:43 nope Sep 07 19:46:50 the LEDs did go on briefly Sep 07 19:47:10 did you see which component went up in smoke? Sep 07 19:48:07 no I didn't, I turned it off before there was enough to melt anything Sep 07 19:48:32 4.5 V power supply blew up a 5v board? Sep 07 19:48:50 was the unit ever powered successfully before this? Sep 07 19:48:51 I looked around a bit online and saw warnings against 6v input, said 5v regulated was correct, but nobody mentioned what a low voltage would do Sep 07 19:49:25 the Yun was, on USB power right before this -- took off the USB, plugged in the ground and Vin on connector Sep 07 19:49:54 however I suppose that part of the board could have been bad, only USB power before Sep 07 19:50:40 yeah I am looking at the schematic now Sep 07 19:50:46 https://www.arduino.cc/en/uploads/Main/arduino-Yun-schematic.pdf Sep 07 19:51:14 where did you connect the power? Sep 07 19:51:49 Vin and ground on the connector labeled power Sep 07 19:54:22 okay Sep 07 19:54:48 bad hardware somewhere, should not have happened? Sep 07 19:55:15 it was probably a diode that let out the smoke Sep 07 19:55:31 which pin did you apply the 5V to? Sep 07 19:56:29 vin right? Sep 07 19:56:47 labeled Vin right on the connector, on one end of the connector Sep 07 19:57:04 don't see a pin 1 marker, so either first or last Sep 07 19:57:12 yeah Sep 07 19:58:07 can you take a picture of the device you have and post it? Sep 07 19:58:39 higher resolution will help Sep 07 19:59:19 I have a feeling that one of your diodes was populated backwards or something Sep 07 19:59:24 Ok there is a diode looking thing not too far from the LEDs that I was watching Sep 07 19:59:55 http://i.ebayimg.com/images/g/HlIAAMXQEgpTFs3B/s-l300.jpg Sep 07 19:59:56 I'll try to find good camera rather than phone Sep 07 20:00:12 you see any that look like this? Sep 07 20:00:37 not labeled but yes Sep 07 20:01:02 do any of them look burnt? Sep 07 20:03:08 does the board still power via USB? Sep 07 20:03:19 I didn't try Sep 07 20:03:39 didn't expect that to work afterwards, can try now Sep 07 20:03:52 give it a try, can't break it any worse Sep 07 20:05:47 looks like those diode would be difficult to populate backwards Sep 07 20:06:00 one LED went on, but no boot Sep 07 20:06:16 not acting like it did prior to smokage Sep 07 20:08:35 the ON led right? Sep 07 20:19:07 Wormo: the power supply, do you have a link to some information about? Sep 07 20:20:40 I'm not a good photographer... http://imgur.com/a/tPrJj Sep 07 20:22:31 :D Sep 07 20:23:36 yeah can tell much from that Sep 07 20:23:39 can't Sep 07 20:23:42 indeed Sep 07 20:23:52 I'll look up the power supply instead... Sep 07 20:25:05 so the board is dead when plugged into USB now? Sep 07 20:25:12 yep Sep 07 20:25:18 but the power LED turns on Sep 07 20:26:57 actually it was a different LED! Sep 07 20:27:14 hmmmm Sep 07 20:27:31 in my lame-o pic, it is RX Sep 07 20:37:47 I really hate boards without reference designators Sep 07 20:39:43 well thx for taking a peek, I'm giving up on this board, waiting for batteries to charge so I can check the supply with a new multimeter Sep 07 20:40:05 I think the supply is the culprit Sep 07 20:40:39 not sure if the board is repairable Sep 07 20:41:35 e-waste box Sep 07 20:42:18 Yun was a sacrifice, hoping it would work well and then I could try it on my more valuable board Sep 07 20:42:57 now I wait for my batteries to charge for new multimeter, which takes different size than old... Sep 07 20:45:36 oh well **** ENDING LOGGING AT Thu Sep 08 02:59:58 2016