**** BEGIN LOGGING AT Sun Feb 16 02:59:57 2020 Feb 16 03:05:32 Oh. Forget that last question. Feb 16 17:30:48 RDS Rapacious Delivery Service Feb 16 20:57:45 hi Feb 16 22:21:27 Any one play with BeagleBone Blue and Ardupilot? Feb 16 22:22:44 not me Feb 16 22:25:05 Seems the links to preconfigured images are down, doing step by steps works until you upgrade the kernal to 4_19 realtime kernal then you start to see spi pin mux error and board crashes. Was hoping someone had an old working image I could start with Feb 16 22:31:54 I did...until... Feb 16 22:31:58 Dang it. Feb 16 23:11:41 * GenTooMan points his finger at set_ Feb 16 23:21:33 Hey! Feb 16 23:21:47 I got a bi-color LED up and fading w/ PWM. Feb 16 23:22:03 Two color, red and green, that makes amber in the mix. Feb 16 23:23:16 Now, I know we are not supposed to fade LEDs b/c it is either off or on. But...fading! Feb 16 23:23:54 Oh and the datasheet is not maintained but the LEDs in question keep selling. Feb 16 23:24:30 See here: https://www.mouser.com/ProductDetail/696-SSL-LX5099SIS. Feb 16 23:32:32 umm why aren't LEDs supposed to be faded? Feb 16 23:33:34 just PWM them! Feb 16 23:33:37 ffs! :p Feb 16 23:34:14 I do not know. I kept reading about them and it kept, in many articles, saying to not fade LEDs. The general idea was to use a GPIO instead of PWM so that fading was not condusive. Feb 16 23:34:38 But, if fading is normal. I might need to get some new articles. Feb 16 23:35:45 I have only a couple of resistors on my bi-color LED. It says the reverse voltage is 5v. I am using 3.3v PWM signals to power these LEDs. Feb 16 23:35:57 I think I need to rethink this idea and get a MOSFET. Feb 16 23:41:15 Reverse Voltage Protection at its finest! Feb 16 23:46:26 And then...I probably need to protect my MOSFET, right? I just watched this video and this fellow is saying to use a zener diode to protect the MOSFET. Feb 16 23:48:49 GenTooMan: Go the summary at the bottom >>> https://www.digikey.com/en/articles/techzone/2012/feb/understanding-the-cause-of-fading-in-high-brightness-leds. Feb 17 00:00:28 you can't fade bi-colour well ;p Feb 17 00:00:47 although it woul dbe interesting to try with a bi-polar PWM drive Feb 17 00:01:01 (ie. for set's benefit .. a dual-PWM signal) Feb 17 00:01:12 Duality? Yea! Feb 17 00:01:24 or half-bridge for those who understand the topology Feb 17 00:02:24 I need to get some small chips to program. I want to learn how to make this chip programming a reality for me. Feb 17 00:02:54 For now, just some basic operations w/ wires and "circuit makers!" Feb 17 00:06:54 Does anyone have any ideas for small chips that are easily accessible for source and/or theory? Feb 17 00:07:33 I guess the most popular would be a start for me, e.g. then I could get access to what others share and learn from that point forward. Feb 17 00:11:03 get an arduino and breadboard Feb 17 00:11:23 if you get the nano, you can plug it straight into the breadboard ;d Feb 17 00:15:36 I am going to build one and program a eeprom or smaller chip for use. "My next prep time!" Feb 17 00:29:29 veremitz: You are right. I got a "cheap" knockoff. They have that chip in it. I guess that is a starting point. Feb 17 00:42:14 I am reading "Bad to the Bone" finally. They have some IR Sensor in it. Nice! I should test it. Feb 17 00:51:24 the big problem wiht the beagle stuff is that the software platform changes so fast. The hardware is good .. but achieving the same task in February isn't the same as what it was in September. And then the cycle repeats .. and repeats, and repeats .. Feb 17 00:51:53 so someone can write up an article and its out-of-date in a month :( Feb 17 01:11:32 Yes, I have noticed that idea to be true every so often. Feb 17 01:12:03 I like to try to update things to make them work in this era but it is not always so plain and simple at times. Feb 17 01:18:59 I am on page 50 and I need to bitwise & two hex. values. I am stumped. Believe it or not, I am reading now on adding, subtracting, multiplying, and dividing binary. So, I am getting schooled by this book. Feb 17 01:19:46 I actually have those skills now but not to use bitwise &. I keep reading and people are "lying" or not correct on bitwise & w/ hex. values. Feb 17 01:22:12 Oh! Feb 17 01:22:43 If both equal 1, then the answer is 1. If neither or one of them equal 1, neither is 1. Feb 17 01:23:03 Talk about a lifetime! Feb 17 01:31:22 that can be a lot of data Feb 17 01:37:06 I am learning about bit twiddling! Feb 17 01:37:09 binay logic is quite simple Feb 17 01:37:30 Right. Binary but then to exchange formats takes time if not using a calculator. Feb 17 01:37:54 From dec. to bin. to hex. and so forth. Feb 17 01:38:24 you get used to that :D Feb 17 01:38:30 I'm a bit slow dec<>hex though Feb 17 01:38:35 the others are simple Feb 17 01:39:20 I remember a couple tricks for dec. to hex. and back. Feb 17 01:40:58 So, it goes: division of the whole number by 16 and then the multiplication of the fraction by 16. Feb 17 01:41:43 And then, to get back, it is opposite. Octal was giving me a hard time at times, too. Feb 17 01:42:38 I was stuck on base 16 and multiplying by 16 and dividing by it as well. Feb 17 01:42:57 I kept looking at the answer like, "Why are they so wrong?" Feb 17 01:43:07 Oops. Feb 17 01:51:57 set_ ummm numerous coversion schemes already exist? Feb 17 01:53:30 I know. I have seen the calculators too. I just did not know everything about these "schemes" yet. Still, there are bits, ha, and pieces I am missing. Feb 17 02:16:06 That, on page 67, idea about pivoting a robot while three of the four wheels move is neat. Feb 17 02:16:11 I never once thought of that idea. Feb 17 02:16:27 I always figured it would scar my tires. Feb 17 02:27:51 And man, those infrared modules are nice. I am going to try it out one day. Feb 17 02:29:20 Oh and who told Mr. LiDar to cost so much? Feb 17 02:33:12 umm itits complex and difficult? Feb 17 02:35:57 I guess so. I just saw one on SparkFun for over $600.00 but it was 360 degrees of sensing. Feb 17 02:36:24 I just saw the breadboard layout of the Magician on the book, "Bad to the Bone." Feb 17 02:36:34 Neat-o! Feb 17 02:53:40 Atari800 + Simax Video Signmaker = amazing retro cheese Feb 17 02:56:14 you could make an atari 800 in an fpga **** ENDING LOGGING AT Mon Feb 17 02:59:57 2020