**** BEGIN LOGGING AT Sat Nov 30 02:59:57 2019 Nov 30 03:24:16 Dang it. Nov 30 04:06:57 Back to three motors working. Dang it! Nov 30 06:16:03 Are there any known issues with the "Alpha" image? Debian 10 is now stable, though I imagine beaglebone support may not be. Nov 30 06:40:37 not sure, rcn-ee[m] would be the person who'd know that... I don't think there's a "todo" list for the testing images anywhere Nov 30 06:41:57 I've been using 10 for quite a while myself, but I use my own images (although once upon a time derived from a beagleboard.org console image) Nov 30 07:02:59 https://youtu.be/d84dUa-VyEE is mild at best take off but then I landed right away and lost a nut. Ha! **** BEGIN LOGGING AT Sat Nov 30 11:58:42 2019 Nov 30 14:35:26 https://www.pololu.com/product/2849? Would this buck converter work if I was using it on the BBBlue to step down a 4S LiPo to a lower voltage? Nov 30 14:40:44 Anyway, waiting is my idea of fun. Keep me waiting! Nov 30 14:43:30 set_ don't you need 5V? Nov 30 14:49:04 I do not know for some reason. Nov 30 14:49:23 Oh! Nov 30 14:49:25 Yea. Nov 30 14:49:57 You are right but if the voltage goes back into the BBBlue, 3.3v is preferable right? Nov 30 14:51:11 I made use of a PRU from Mirkix' repo online w/ arducopter. Nov 30 14:51:30 If that PRU was to accept anything over 3.3v, my board is shot. Nov 30 14:51:56 At least that pin could be damaged or the BBBlue entirely. Nov 30 14:53:03 https://github.com/mirkix/ardupilotblue/blob/master/image/servopwr.png Nov 30 14:53:57 I have an output of 5v from the Servo Header to power my Receiver. Nov 30 14:55:30 set_ you need to supply 5V :D Nov 30 14:55:57 But...the Sbus Signal pin from the Receiver feeds the PRU w/ data. Nov 30 14:56:05 5v. Okay. Nov 30 14:56:08 all the power supply voltages (3.3V inclusive) come from that, your servos are powered by that. Nov 30 14:56:30 I have three phase motors. Nov 30 14:56:36 I suggest you start by drawing a diagram of your power feeds and go from their. Nov 30 14:56:41 Okay. Nov 30 14:56:59 I do not know the inner workings of the X8R as of now. Nov 30 14:57:17 It's a tree the root of which is the 4S battery then branch off each component (IE 5V supply) etc. Nov 30 14:57:27 Got it. Nov 30 14:57:28 Okay. Nov 30 14:57:47 hang each device off what it's powered from. That will give you an idea of what you need. Nov 30 14:59:20 I know the batteries I have control the motors but the company that produced the Fixed Frame says that I need a 3S. I will try the 3S and go from there. Nov 30 15:00:28 So, 3S to (5v) buck converter to powered Receiver! Nov 30 15:00:45 I will test my peripherals first like you said. Nov 30 15:01:25 the max voltage from 4s is 17 V if that is the worst case. Nov 30 15:01:59 Okay. Nov 30 15:02:05 so 18+V for your buck converter. Nov 30 15:02:24 I will do the math soon and attach the "attachments." Nov 30 15:02:31 First, BOM! Nov 30 15:08:22 https://www.pololu.com/category/248/d24v10fx-step-down-voltage-regulators is something that might work better. 1A? Nov 30 15:56:16 zmatt: yeah networkmanager on the host. ok then it appears the BB isn't rebooting. I used 8M that doesn't seem particularly small to me. WRT verifying contents, I guess I could hash the first len(image) bytes to verify? Nov 30 16:01:38 (since the image is considerably shorter than the sd card) Nov 30 16:04:31 I am on hold w/ my BOM. The LiPo I need does not have a banana connector. Boo! Nov 30 16:05:16 Soldering here I come. Yea. Nov 30 16:05:37 Has anyone ever told you the wires keep getting shorter? Nov 30 16:10:01 zmatt: *sigh* the simplest answer is usually the right one... seems stable after swapping microusb cables... lol Nov 30 19:42:22 if I have a 3.3V logic output from an external IC, do I need to put a current limiting resistor between it and a 3.3v digital gpio? Nov 30 19:48:45 normally you shouldn't . the input impedance should be 'huge' .. but it can sometimes be helpful to put a smallish resistor to dissipate any stray capacitance/noise depending on signal speeds Nov 30 19:49:59 2MHz? Nov 30 20:26:12 Okay! Nov 30 20:26:40 The details are important. Let me show my latest version of the ArduDroid. Please be patient. Nov 30 20:27:51 The ESC had neon/fluorescent green on a white background. Talk about going blind readin' the damn print. Sheesh. Nov 30 20:47:49 https://youtu.be/xjnDOkzHuaY got me caught in the wall so far. I am trying to fine tune things to just fly up and land for now. Nov 30 20:48:06 eee haw. Up-down. Nov 30 20:50:21 I almost had lift off but the dang wall was there. I should take it outdoors. Nov 30 21:07:39 I first want to hop stairs and then fly upstairs and back down after my up-down tests. Anyone out there doing ArduCopter stuff w/ the BBBlue? Nov 30 21:46:32 gm Nov 30 21:47:03 Hello! Nov 30 21:47:35 question regarding the power supplied by the VDD_3V3B pins on P9. The SRM doesn't seem to detail whether this is 250mA _total_ or 250mA per pin Nov 30 21:48:28 for VDD_5V it says explicitly "per pin". Nov 30 21:49:25 I think it is only 8mA or less per pin w/ a total being less, a lot less, than 45mA total. Nov 30 21:49:30 I will look again. Nov 30 21:50:17 So, if you were to use so many pins at 6 to 8mA per pin, the total could not exceed a specific amount. Nov 30 21:52:41 An external LDOTLV70233 provides the 3.3V rail for the rest of the board <<<< this is from p. 36. Nov 30 21:52:45 Still looking! Nov 30 21:53:32 400 mA on p. 49. Nov 30 21:57:42 TPS65217C is the chip that supplies the voltage to some of the board but it cannot supply enough current and the TL5209A chip is used as VDD_3.3vB. So, I think the TPS65217C supplies a portion and the rest is taken over by the other LDO. Nov 30 21:57:44 Right? Nov 30 22:02:38 yes, looks like. so VDD_3V3B on P9 can provide 500mA total, 250mA per pin. That's plenty. Nov 30 22:02:51 Really? Nov 30 22:03:00 I thought it was 400mA total. Nov 30 22:03:03 I will review it again. Nov 30 22:03:50 1.8v and 3.3v both only accept 400mA each. Nov 30 22:04:21 The chart at least states it on the SRM. Nov 30 22:04:47 I have not looked at each individual datasheet for those chips. Nov 30 22:04:53 I guess I should. Nov 30 22:05:26 I mean, hell, I use them all the time for all sorts of fun and knowledge. I should know what it is exactly I am using. Nov 30 22:08:15 hm, probably less than 500mA, seems some stuff on the bbb uses the 3V3B rail, too. Nov 30 22:08:25 but should be still enough Nov 30 22:08:54 What are you doing? Nov 30 22:09:23 Are you creating a mA farm? Nov 30 22:09:24 Ha. Nov 30 22:10:34 thinkfat_: I do not think you get to use all of the whole 400 mA on the P9 and P8 headers. Nov 30 22:10:56 I think you have to use only so much before issues arise. Nov 30 22:12:52 I will search the SRM for this data. Nov 30 22:14:33 no, nothing particularly power hungry on the board Nov 30 22:14:50 but there's a ublox gps module that has a bit higher power requirements during startup Nov 30 22:16:02 LDO1 and LDO2 are intended to support system standby mode. In normal operation, they can support up to 100mA each. LDO3 and LDO4 can support up to 285mA each. I think there are many ideas I am not familiar w/ at this point. Nov 30 22:16:02 the main power draw will be on the 5V rail for an ocxo. Nov 30 22:16:14 ocxo is what exactly? Nov 30 22:16:38 That is from the SRM too. Nov 30 22:16:39 oven-compensated crystal oscillator Nov 30 22:16:51 Oh. Nice! Nov 30 22:16:59 So, you can bake your way to glory? Nov 30 22:17:12 yep ;) Nov 30 22:17:18 Double Nice! Nov 30 22:17:34 For cakes or electronics? Nov 30 22:17:39 Ha. Nov 30 22:17:40 those LDOs are part of the main PMIC, I think Nov 30 22:17:54 Aw. So, there are many more on this board than I thought. Nov 30 22:18:02 nah, cookies, of course. very precise, gps disciplined cookies Nov 30 22:18:32 Extra awesome. Do not swallow the chips...a...hoy. Sorry. Nov 30 22:18:40 crunchy Nov 30 22:19:07 You were right. It is the PMIC. Nov 30 22:23:29 I think that PMIC is the TPS65217C I was describing. It must handle the 3.3v rail and the vdd/sys_5v too, e.g. well, along w/ that other chip. Nov 30 22:24:33 That TL5209A chip handles whatever else is not handled by the PMIC. Nov 30 22:26:15 So, does this cake bake apparatus w/ GPS need wheels? Nov 30 22:26:30 "Let go, my Eggo!" Nov 30 22:29:45 nope, no wheels Nov 30 22:32:01 Okay. Nov 30 22:32:52 So, I am still looking and reviewing this text. I am sure there are only so many mA that can be used by the PMIC and the backup chip. Nov 30 22:33:02 I have not found it yet. Nov 30 22:36:34 There is a TL5209 too. Nov 30 22:36:55 I am assuming this chip handles the 3.3v rail from the PMIC. Does it? Nov 30 22:40:42 See. I am viewing things incorrectly thus far. I keep getting deeper in the SRM and I find that a cap handles the 3.3vB chip. Maybe? I am reading it and I cannot tell for sure. Nov 30 22:43:20 the TL5209 is what provides the 3V3B rail on P9 Nov 30 22:44:03 It can source 500mA total, so a cape can use 500mA - "whatever the bbb needs from that rail" Nov 30 22:45:59 Oh. Got it. Nov 30 22:46:03 I was unsure of that idea. Nov 30 22:49:23 See. I think, still, there is some sort of outage of mA. Is there a way to run out of mA on the BBB? Nov 30 22:50:35 I mean, if it is plugged in, the amps should be there but what if? What if the mA are not around? What if the mA are allocated by something else? Nov 30 22:53:04 I wonder how much mA it takes to run a full-on GPS stove? Nov 30 23:02:58 plenty while it heats up, not overly much when it's hot. just like a regular stove Nov 30 23:05:55 Oh. Makes sense. So thinkfat_, I think that each rail can handle 250mA like you were saying for P9 but I found in one book by Molloy that each rail and all inclusive rails only can handle so many mA total. Nov 30 23:06:02 I will check the book from him now. Nov 30 23:10:43 Dang it. Nov 30 23:10:58 I have to go. Granny-do-little calls. Off to assist and serve! Nov 30 23:11:05 bbl Nov 30 23:27:39 Im on 5.4.0-bone8. The ad7192 driver is complaining about a IRQ line. It uses DOUT/~RDY as data ready pin. I need to set interrupt-parent, interrupts, irq-gpio. Never did it before **** ENDING LOGGING AT Fri Dec 06 11:09:57 2019