Phil (M0OFX) @m0ofx@mastodon.social
Electronics, software and ham radio guy!
One of these days I really need to get in the garage and spend a few days improving the controller on the pick-and-place. A Mini-ITX PC and a few STM32s, maybe.
Our efforts for community open source, open hardware pick and place machining detailed - https://www.apertus.org/picking-and-placing-hardware-production-progress-article-feburary-2017
#OpenSource #OpenHardware #Linux #Programming #Electronics #Manufacturing
My other car is a well funded public transit system
Quake on an oscilloscope. I'd love to see this done with a higher-bandwidth analog I/O to improve the vectors. https://www.youtube.com/watch?v=aMli33ornEU&feature=youtu.be
"I made a Mario clone run in an oscilloscope using a STM32, it's SPI peripheral and some analog circuitry • r/electronics"
https://reddit.com/comments/706dew https://mstdn.io/media/-ui6G5Obg_a3zAFrTUQ
#electronics
So there's one feature I really miss while I'm playing around on here - "quote+boost". I got used to saying "hey this thing is cool you should look at it because..." when I RT'd something on Twitter.
So this is like, really random, mainly because I am not an elekchicken nerd at all. But I stumbled across these really cool (and exceedingly rare) vintage digital displays called "NIMO tubes".
Anyway I thought they'd be really cool inspiration for scifi/retro scene design!
#design #electronics #vintage #art #inspiration
https://mastodon.social/media/iBKDG-fL44xr8SypjYw
https://mastodon.social/media/ln-BrvFx7M_OPQ_M3Sg
https://mastodon.social/media/K-AuxyzyXOpZiK1wAmc
Coooool: An Arduino Powered Jack O' Lantern With A Bunch Of Moving Eyeballs http://geekologie.com/2017/10/coooool-an-arduino-powered-jack-o-lanter.php #youresayingyourpumpkinisbetterthanmineigetitjeez #thisishalloweenthisishalloween #bigtroubleinlittlechina #peekabooiseeyou! #trickortreat! #doityourself #electronics #surewhynot #halloween #eyeballs #iseeyou #pumpkin #clever #creepy #spooky #howto #neato #video #cool #cute
CQ DE M0OFX - anyone out there? #hamradio #hamr #amateurradio #electronics #machining #ModelEngineering #photography #softwareEngineering #embeddedSoftware
Useful info if you're flying domestically in the USA with #HamRadio equipment. The SOTAbeams lightweight mast is OK as carryon! I have one of these. It's great for field operating.
http://www.sotabeams.co.uk/compact-light-weight-10-m-30-ft-mast/
Okay so, #hamr equipment then. I'm running an FT897D with LDG AT897+; the FT897D has two packs of Li-Ion batteries I homebrewed in the place Yaesu left for their Nicad pack.
Antenna is a homebrew parallel dipole, good on 40m, 20m and either 15 or 17m.
Also hacked in a Clansman headset because I like the sound, the level of sound isolation and the price!
I can usually be found running a few watts on JT65 40m if band conditions are good.
Realy good #cw learning tool by #F6DQM: CW_PLAYER
#introductions
Hi, I'm Phil - M0OFX for all the #hamr / #hamradio / #AmateurRadio guys out there. You may know me as "@ philpem" on Twitter.
I'm an electronics and embedded software engineer by trade, but I also do a bit of #photography, #machining, and other stuff.
In my spare time I make things, help out a local charity (volunteer fundraiser) and drink coffee. Because why not? :)
Of interest to any #HamRadio operators out there in the Fediverse. It's a story from my local NPR affiliate about amateur radio operators being deployed to #PuertoRico by the #ARRL in coordinaction with the #RedCross
Watched a couple of the recorded talks from the TAPR DCC yesterday.
All Your Modem Are Belong To Us
https://www.hamradionow.tv/episodes/2017/10/19/hrn-355-all-your-modems-are-belong-to-us-2017-dcc
State of Digital Voice
https://www.hamradionow.tv/episodes/2017/10/19/hrn-356-bruce-perens-k6bp-state-of-digital-voice-2017-dcc
Bruce makes many good points, but some of his numbers are pretty far off. Main example, DSTAR's *total* bitrate is 4800. Breakdown:
2400 Voice
1200 Voice FEC
1150 Data (mostly unused)
50 Protocol overhead
So yes, there's nearly a quarter of the stream being wasted most of the time.
I (VE3XEU) was heard 1500Km away in Tennessee on 1/3 of a watt of power into a 9:1 balun and 30m of speaker wire in a crazy zigzag across my yard.
(Also Connecticut, Illinois and .. uh .. Vanier).
Doing scrappy homebrew stuff like this is why I've resisted spending real money on a proper radio (and spoiling my fun).
Also glad I got my Advanced class license, the restrictions on Basic would have been frustrating.
Question is how to convince enough people to make the switch, perhaps I'm a pessimist but the idea of climbing that mountain puts me off putting effort into the idea.
