------------------------------- Wed Jan 18 06:15:20 PM EST 2023 ------------------------------- Transcript of Chat box from BLU meeting, Wed, Jan 18, 2023 Meeting held online via Jitsi Meet In attendance (22 total): Speaker(s): * Kurt Keville * Joe George * Shankar Viswanathan * Bob Frankston * Brian DeLacey (Kurt's students) * David Koehler * Mason Osborn * Justin Smith * Laura (COMP4960) BLU officers: * John Abreau * Jerry Feldman * Bill Ricker Attendees (named): * Brendan Kidwell * Bryan Smith * Chris Allen * Ed Piecewicz * Professor J. Gylinsky * Sean Nishi * Jon "maddog" Hall * Tommy Nguyen * Henry Walker Attendees (anonymous): * VRDude ------------------------------------------------------------------------- Joe George - TI says:I can hear you. Let me test my mic. Joe George - TI says:I can start at 7 pm Joe George - TI says:will work on mic 18:36 ------------------------------------------------------------------------- Kurt says:There is a lot of noise. Could you all mute your mics? Kurt says:I just heard a TI speaker an hour ago... https://mitnano.mit.edu/events/mitnano-seminar/ahmad-bahai 18:39 ------------------------------------------------------------------------- # first speaker - Joe George, Texas Instruments ------------------------------------------------------------------------- SV says:Chris: I've heard good things about HackRF SV says: https://greatscottgadgets.com/hackrf/ Am I the only one not seeing Joe's screen? 19:07 ------------------------------------------------------------------------- Jerry Feldman says:He is not sharing 19:07 ------------------------------------------------------------------------- John Abreau says:Nope. I don't see it either. 19:07 ------------------------------------------------------------------------- Jon "maddog" Hall says:Linux never crashes... ๐Ÿ˜„ 19:12 ------------------------------------------------------------------------- Bryan Smith says:๐Ÿ˜„ 19:12 ------------------------------------------------------------------------- # joe's talk ended at 7:20 pm ------------------------------------------------------------------------- Kurt says:For the group : Whatever happened to wireless mesh? https://en.wikipedia.org/wiki/IEEE_802.11s Did companies just implement meshing at the application layer? And blow off the standard ? 19:21 ------------------------------------------------------------------------- Bob Frankston says:Meshing should be at the IP level not the hardware. 19:21 ------------------------------------------------------------------------- Jerry Feldman says:Maddog crashed my system ๐Ÿ˜„ 19:22 ------------------------------------------------------------------------- Jon "maddog" Hall says:My experience with such "public" slides being marked "non-disclosure" is typically a legal reason to keep customers from holding company's feet to the fire if and when something is wrong on the slide or the product never makes it to market. 19:22 ------------------------------------------------------------------------- Professor G. says:yep 19:24 ------------------------------------------------------------------------- # second speaker: shankar - 7:25 pm ------------------------------------------------------------------------- Joe George - TI says:BLE Mesh available on superset CC2652 device (and others): https://dev.ti.com/tirex/explore/node?node=A__AB4mU2.v3JWyckLO17LDhA__com.ti.SIMPLELINK_CC13XX_CC26XX_SDK__BSEc4rl__LATEST 19:28 ------------------------------------------------------------------------- Kurt says:Thanks. I forgot about Long Range BLE Mesh... 19:29 ------------------------------------------------------------------------- Joe George - TI says:Also WiFi4 mesh available now (assume WiFi6 will also be eventually released): https://training.ti.com/wilink-8-wifi-mesh-demo 19:32 ------------------------------------------------------------------------- # shankar ended talk at 7:35 pm ------------------------------------------------------------------------- Kurt says:There is a lot of metrics you can get from iwconfig, or the BT equivalent; signal strength, security info, etc 19:35 ------------------------------------------------------------------------- Joe George - TI says:Ahmad is TI CTO. Met him briefly when he was in Waltham in Nov. 19:36 ------------------------------------------------------------------------- # next speaker: bob frankston - 7:38 pm ------------------------------------------------------------------------- Brian DeLacey says:yes 19:38 ------------------------------------------------------------------------- Kurt says:Thank you Joe and Thank you Shankar 19:40 ------------------------------------------------------------------------- John Abreau says:Thanks, Joe. Thanks, Shankar. 19:40 ------------------------------------------------------------------------- Joe George - TI says:old iwconfig I had archived with Wilink8: 19:47 ------------------------------------------------------------------------- John Abreau says:and you didn't even need to coconuts! ๐Ÿ˜› 19:47 ------------------------------------------------------------------------- Joe George - TI says:root@am335x-evm:~# iwconfig lo no wireless extensions. ra0 Ralink STA ESSID:"wireless" Nickname:"RT2870STA" Mode:Managed Frequency=2.462 GHz Access Point: 00:24:6C:2C:8A:20 Bit Rate=65 Mb/s RTS thr๐Ÿ˜ฎff Fragment thr๐Ÿ˜ฎff Encryption key๐Ÿ˜ฎff Link Quality=100/100 Signal level:-45 dBm Noise level:-83 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 eth0 no wireless extensions. 19:47 ------------------------------------------------------------------------- John Abreau says:those emoticon codes mess up pasted code. ๐Ÿ˜ฎ 19:48 ------------------------------------------------------------------------- Chris Allen says:holy crap this dude wrote his own assembler! 19:48 ------------------------------------------------------------------------- Joe George - TI says:Gotta drop. Will send Kurt the slides. Thanks! 19:49 ------------------------------------------------------------------------- Jerry Feldman says:He wrote the first PC spreadsheet, Visicalc 19:49 ------------------------------------------------------------------------- Kurt Kurt says:Thanks Joe 19:49 Kurt says:Here is one of Joe's blogs... (not IoT)... https://training.ti.com/rapid-proto-intro 19:52 ------------------------------------------------------------------------- SV says:I have to drop, but this is fascinating! Goes back to the original idea of the ARPAnet that the networks should be dumb and all the smarts are at the endpoints 19:55 ------------------------------------------------------------------------- John Abreau says:Thanks, Shankar. 19:56 ------------------------------------------------------------------------- Jerry Feldman says:Maybe Bob can visit us in the future 19:56 ------------------------------------------------------------------------- SV says:I'll send you the slides Jabr 19:56 ------------------------------------------------------------------------- Bob Frankston says: https://rmf.vc/infratalk 19:57 ------------------------------------------------------------------------- Professor G. says:Who here is from COMP4960? 20:03 ------------------------------------------------------------------------- Laura COMP4960 says:I am 20:03 ------------------------------------------------------------------------- Professor G. says:๐Ÿ‘ 20:04 Professor G. says:@bob, did you ever use the CHIP8? 20:04 ------------------------------------------------------------------------- Kurt says:Gustafson posits has the NaN and ... (ellipsis) primitives 20:12 ------------------------------------------------------------------------- Mason says:NaN is a part of floating point. Here's a video explaining it from basics: https://www.youtube.com/watch?v=dQhj5RGtag0 20:13 ------------------------------------------------------------------------- Jerry Feldman says:A NaN is another discussion in Floating Point 20:13 ------------------------------------------------------------------------- Bob Frankston says:Apologies for not keeping up wi9th the chat. CHIP8? Let me look. 20:14 ------------------------------------------------------------------------- # brian delacey - speaker - 8:15 pm ------------------------------------------------------------------------- Jerry Feldman says:And of course in FP you have denormals 20:15 ------------------------------------------------------------------------- Chris Allen says:How did you old-school guys handle doing floating point math on those old processors? 20:15 ------------------------------------------------------------------------- Bob Frankston says:In the 70s I had the 6502 as well as Multics 20:16 ------------------------------------------------------------------------- **Bill** == Bill Ricker ------------------------------------------------------------------------- Kurt says:Early version of IEEE 754... 20:16 ------------------------------------------------------------------------- Bob Frankston says:Never read it but know about the C compiler hack. Today, is the problem of the binary blob Bob Frankston says:Crypto is not really currency Bob Frankston says:It's a child's idea of money as (virtual) gold. 20:17 ------------------------------------------------------------------------- Jerry Feldman says:Its a scam ๐Ÿ˜› 20:18 ------------------------------------------------------------------------- Bill Ricker says:And ain't crypto either 20:18 ------------------------------------------------------------------------- Chris Allen says:i had bitcoin in 2012. I lost some of it due to a keystroke logger malware, the rest i lost to exchanges where they resided getting hacked or shut down by the DOJ 20:19 ------------------------------------------------------------------------- Bob Frankston says:Caroline went to Newton North ๐Ÿ˜‰ 20:21 Bob Frankston says:Remember we had the cloud in the 60s -- Timesharing! 20:23 ------------------------------------------------------------------------- Mason says:Newton ๐Ÿ˜„ 20:24 ------------------------------------------------------------------------- Jerry Feldman says:I grew up in Newton 20:24 ------------------------------------------------------------------------- Kurt says:Hilary Clinton went to Maine South High School Kurt says:(not in Maine) Kurt says:Ray Ozzie also went to Maine South High School Kurt says:(also not in Maine) Kurt says:I have gotten quite fascile at scripting https://ronin.cloud/ 20:30 ------------------------------------------------------------------------- Jerry Feldman says:Maine South is Park Ridge Il 20:30 ------------------------------------------------------------------------- Brian DeLacey says:๐Ÿ‘ Brian DeLacey says:Thanks ... 20:35 ------------------------------------------------------------------------- Bob Frankston says:Question about Google CLoud - which install can I use if I want a GUI 20:35 ------------------------------------------------------------------------- # Prof G's student talks ------------------------------------------------------------------------- Kurt says:Thanks Brian ... and Jerry 20:37 Kurt says:I don't know about Google Cloud but I have a recipe book for Azure I can dig up 20:37 ------------------------------------------------------------------------- # **david koehler - speaker ------------------------------------------------------------------------- Mason says:I think the Jamstack is also pretty interesting, w/ things like netlify, where you move as much clientside as you can. 20:37 ------------------------------------------------------------------------- # "D Koehler, M Osborn, J Smith, Professor J Gylinsky" on bottom of david's slides # COOP Proposal Spring 2023 # Wentworth Institute of Technology - Computing & Data Science # "What Would the Customer Want?" # next sudent - mason osborn - 8:49 pm # chip-8 emulator ------------------------------------------------------------------------- Bob Frankston says:FYI -- do you know about AssemblyScript? BTW, WRT to the JS discussion -- https://rmf.vc/IEEEJSEco Bob Frankston says:ByteArrays work very well in JS Bob Frankston says:I've done a fair amount of bit twiddling in JS 20:55 ------------------------------------------------------------------------- # justin smith - student - 8:56 pm # server rack ts-7600s ------------------------------------------------------------------------- Mason says:Yeah, you can do bit twiddling in JS, it's just a bit more of a pain, since a lot of those features are a bit more tacked on WASM is going to be super nice in the future with interface types https://hacks.mozilla.org/2019/08/webassembly-interface-types/ 20:57 ------------------------------------------------------------------------- # next student - laura comp4960 - 9:03 pm ------------------------------------------------------------------------- Bryan Smith says: https://www.onlogic.com/cl200g-10/?utm_term=&utm_campaign=PMax:+Shopping+-+Smart-+Sale/EOL&utm_source=adwords&utm_medium=ppc&hsa_acc=9181945420&hsa_cam=17561204096&hsa_grp=&hsa_ad=&hsa_src=x&hsa_tgt=&hsa_kw=&hsa_mt=&hsa_net=adwords&hsa_ver=3&gclid=CjwKCAiAzp6eBhByEiwA_gGq5M6SPFvUHypKvm9hG1paJJrflRqhOxZFmoiy7C-woJOMRaz4Hem6ZxoCbmwQAvD_BwE Bryan Smith says:Example of a DIN rail mounted IOT embedded device 21:04 ------------------------------------------------------------------------- Professor G. says:thanks 21:04 ------------------------------------------------------------------------- Mason says:We can hear you 21:05 ------------------------------------------------------------------------- Kurt says:We can record this and send it to you 21:06 ------------------------------------------------------------------------- Bob Frankston says:I'll put in a strong case for HTML -- CSS is an art in itself. Lots of packages to help you but learning them is na issue. so, for now simple HTML is very usefult o learn in itsel.f 21:06 ------------------------------------------------------------------------- Professor G. says:reload the page 21:06 ------------------------------------------------------------------------- John Abreau says:laura is reconnected 21:07 ------------------------------------------------------------------------- Kurt Kurt says:Laura you may want to quit out and come back... we can't restart the recording 21:07 ------------------------------------------------------------------------- Laura COMP4960 says:ok that's ok I reloaded the page; it seems when I unmute the problem occurs 21:08 ------------------------------------------------------------------------- Mason says: https://svelte.dev/ 21:08 ------------------------------------------------------------------------- Professor G. says:can you hear now? 21:08 ------------------------------------------------------------------------- Laura COMP4960 says:yes I just switched my headset so I can hear now 21:09 ------------------------------------------------------------------------- Jerry Feldman says:๐Ÿ‘ 21:09 ------------------------------------------------------------------------- Brian DeLacey says:๐Ÿ‘ 21:11 ------------------------------------------------------------------------- Professor G. says:๐Ÿ‘ 21:11 ------------------------------------------------------------------------- Ed Piecewicz says:๐Ÿ‘ 21:11 ------------------------------------------------------------------------- Laura COMP4960 says:thank you! 21:11 ------------------------------------------------------------------------- Mason says:thank you! 21:11 ------------------------------------------------------------------------- Ed Piecewicz says:Thank you. Excellent meeting! 21:11 ------------------------------------------------------------------------- David Koehler says:Thank you! 21:11 ------------------------------------------------------------------------- Henry Walker says:Thanks everyone for sharing! 21:11 ------------------------------------------------------------------------- Professor G. says:Thank you everyone! See you all next BLU 21:13 ------------------------------------------------------------------------- Kurt says: https://ascslab.org/odysseus.html 21:15 ------------------------------------------------------------------------- Bob Frankston says:I understand the attraction of WASM but people tend to underestimate the performance of JS. As to bit twiddling I found it pretty easy - yeah, you can't name bit subfields but its easy to wrap that. 21:16 ------------------------------------------------------------------------- Chris Allen says:is it possible interject wasm code into js the same way you can interject assembly into c/c++ code? 21:18 ------------------------------------------------------------------------- Bob Frankston says:I've got to get back to bug chasing -- but I'm reachable at BLU@bob.ma 21:20 ------------------------------------------------------------------------- Kurt says:Gotta drop off... cat is crying to be fed... 21:21 ------------------------------------------------------------------------- Ed Piecewicz says:๐Ÿ˜ƒ 21:21 ------------------------------------------------------------------------- Bryan Smith says:๐Ÿ˜„ ๐Ÿ˜„ ๐Ÿ˜„ 21:24 ------------------------------------------------------------------------- meeting ended at 9:32 pm