Tweets
All week I’ve been trying to focus on making progress on Open Book for the folks who built one or plan to. So many things to do that I’ve been having trouble figuring out where to start. I have documentation to write, but the documentation… https://mastodon.social/@joeycastillo/109317179003540950
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Replying to @frivolous_circs and @LaserMistress
Suddenly reminded of this tweet: https://mobile.twitter.com/HuntClancy/status/1580042188079173632
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Replying to @frivolous_circs and @LaserMistress
A while back I read about a fireworks conference and I keep wanting to crash it; apparently there’s a demo area where night after night they just blow up the state of the art in pyrotechnics.
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RT @circuitpyshow: Coming Monday! Joey Castillo (@josecastillo) joins the show and discusses the LCD Featherwing, the Open Book, and powe…
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Replying to @SnepOnSecurity
I mean, not much chance of that. (also his description of the ideal triggering mechanism sounds suspiciously like, y’know, murder)
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Replying to @josecastillo
“It is also, as far as I know, the first non-fiction example of a VR device that can actually kill the user. It won’t be the last.” like yeah sure I GUESS supervillain tech is inevitable in a world with supervillains, but you don’t have to take that on yourself bro
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The founder of Oculus claims to have invented a VR headset that can kill the wearer. http://palmerluckey.com/if-you-die-in-the-game-you-die-in-real-life/ https://twitter.com/AlexBlechman/status/1457842724128833538
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Replying to @songsteven2
I mostly make stuff; “hacking” in the sense of the hacker ethic, but I’m not in infosec or anything. I do have one CVE to my name, but only because I was trying to make stuff and the vuln was breaking my shit.
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Replying to @kfury
Apparently they did disable it, but the timing could have been better…
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Replying to @cabe_bedlam
Certainly possible! Then again: the Smalls Theorem posits that at least in some cases, money and problems can be directly correlated. https://www.youtube.com/watch?v=gUhRKVIjJtw
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RT @oshpark: 📣 You can also find us on @joinmastodon at: https://fosstodon.org/@oshpark
Say “Hi” if you are on #MastodonSocial too!👋💜
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also hey hackaday supercon attendees, double check if you bought a Powerball ticket; you might be a billionaire (winning ticket was sold four miles from Supplyframe HQ) https://www.cbsnews.com/losangeles/news/winning-powerball-jackpot-ticket-sold-at-joes-service-center-in-altadena/
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Sensor Watch battery test: how it started / how it’s going.
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Replying to @josecastillo
Battery test, day 365: 2.69 volts and y’all: WE MADE IT! We did the math, we did the science, and now I can say that Sensor Watch has year-long battery life because this battery lasted a full year. 54 days to the new one; will it see 2023? Will it outlast Twitter? Let’s find out!
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Replying to @DHammarskjold
SO GREAT TO MEET YOU TOO! I feel the same way re: exhausted and grateful. Thank you for the colorful transistor and other tiny, tiny boards; they all managed to survive the plane ride home without getting lost!
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Replying to @MLE_Online
I know, I’m sorry to have missed you! I will definitely be back for next year’s tho, I’m hooked!!
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Replying to @josecastillo
finally, bonus shot from today’s post-con wander over to Apex: I love this photo SignalSkew took of me among the blinkenlights 🤩
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Replying to @josecastillo
I want to keep in touch with you all, and I’ve tried to follow folks back as I can, but my Mastodon notifications have been wild so definitely drop me a mention, DM or email! Also, if you did Joey’s Ad-Hoc Build-a-Book Workshop on day 1: I’ll have more resources for you soon :)
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First Hackaday #Supercon in the books, and what an absolute WHIRLWIND. So wonderful to FINALLY meet so many of you wonderful makers and hackers and see all the amazing stuff you’ve been doing. My heart feels so full (even if my body feels the need to sleep for the next day or 3!)
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Replying to @dcelectr
I mean that’s what Mastodon is for at this point; the #electronicstwitter migration is well underway. Over at supercon this weekend most speakers had already updated their slides with mastodon handles. Point is, what’s happening is happening; I’m just here for the popcorn now. 🙃
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to be clear: at this point i’m mostly only on here to cyberbully the world’s dumbest rich man.
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“im not owned! im not owned!!”, i continue to insist as i slowly shrink and transform into just another elon musk https://twitter.com/elonmusk/status/1589390597798125568
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I can trash you for free on Mastodon and it’ll last longer. https://mobile.twitter.com/elonmusk/status/1588750686006947840
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Replying to @crulge
Counterpoint: technology is easier if you outsource the values piece to other folks. Their values just might not be aligned with yours.
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RT @AlpenglowInd: Just a little surface mount soldering on the floor, a little informal Open Book workshop with 🐘joeycastillo@mastodon.soci…
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Replying to @getur
I am, yes! Feedback away, or email joey @ my website domain https://joeycastillo.com
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Replying to @josecastillo
To be clear: not for any activist reason, but just because it would be fun and burn some of Elon’s money.
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Let’s kill Twitter. https://twitter.com/elonmusk/status/1588538640401018880
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Replying to @josecastillo
money doesn’t make things. people make things. and people can unmake them too.
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Replying to @kfury
“If you didn’t get an email by 5 pm, please contact one of the twelve law firms organizing seventeen class action lawsuits by 9 am on Monday.”
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Replying to @bitshiftmask and @gsuberland
one. As a treat.
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Dear soon-to-be-laid-off Twitter employees: if you still have the access to post everyone’s unsent draft tweets all at once? That would be a hell of a blaze of glory. Just sayin’.
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Replying to @tablatronix and @GregDavill
This is extremely cursed and I love it.
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Replying to @ajbauer
*watching coverage of trump’s funeral someday* “Today was the day he became president.”
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if i had arrived at the airport ＊one＊ minute later, my checked bag would not have made it on the plane. Luckily it did, so #hackaday #supercon here I come!
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Replying to @MTRNord
I had not seen this but WOW! That is SOME DETAIL! I got to the bottom and then realized there are four more pages?! That’s amazing, thank you for sending!
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Replying to @RWB93174525
I sense it could go way longer; I’m waking the CPU 4x a second for the display update, but I could do the scroll in standby. Re: Sharp display tho, I’m curious as well; I recently found a 1.3" Memory LCD prototype with a coin cell that I built back in March, and it’s still going!
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Replying to @bradanlane and @einer54321
I mean, that’s fair! And a good data point, thanks for the feedback :)
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Replying to @bradanlane and @einer54321
yea it was a quick mockup, I was too lazy to tweak the middle segment, but I did this for one of the characters on the Sensor Watch dev board. You split segment G in the middle, and add an eighth segment H as the downstroke. Gives you capital M, W, I and a plus sign.
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Replying to @bradanlane and @einer54321
*puts market research hat on* how would you feel about eight segments? Gets you unambiguous glyphs for most everything, tho some can only be lowercase. (X remains endlessly wacky)
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Replying to @josecastillo
This is an interesting challenge: the power-on reset requires a bit more power than our low energy scroll, and if it’s overcast, the solar cell can’t quite get the chip started. But once it gets a kiss of sunlight, we can run the scrolling animation forever in indirect light!
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SPOILER: today’s Wordle. Mom and I both got it in four, and this happened again. Wordle 501 4/6*
⬛⬛🟨⬛🟨
🟨🟨🟨🟨⬛
🟨🟨🟩🟨⬛
🟩🟩🟩🟩🟩 https://twitter.com/josecastillo/status/1579982284811571200
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I had never thought to pronounce this in Spanish and now I’m never going to unhear it.
¡ca•pa•ci•TAN•ce!
https://twitter.com/fredmcintyre/status/1587896244503912454(original)
Replying to @Raffzahn
It’s this adorable lil thing from Aliexpress! Not quite breadboard friendly pitch — 2mm instead of 2.54 — but you can bend the pins to fit it into a protoboard. https://www.aliexpress.us/item/3256802812508797.html
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Replying to @josecastillo
The code! Written in this newfangled gossamer framework I’m hacking on. It’s all in this file — which also serves as decent documentation for working with character mapping on the @MicrochipMakes SAM L22’s integrated segment LCD peripheral. https://github.com/joeycastillo/gossamer/blob/049841043e6831b4ca7286b6cdbcf7e005cff355/apps/nametag/app.c
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Replying to @jnthas
Yep! Or hardware, technically; the SAM L22 has an LCD peripheral designed to drive these kinds of raw LCD glass displays. Several of its GPIOs can be assigned to generate the required AC waveforms.
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Replying to @einer54321 and @bradanlane
Yep! Standby mode on the SAM L22. Technically the CPU wakes briefly for every display update, but I can optimize further: the LCD peripheral has an automated character mapping mode that should be able scroll for me with the CPU permanently asleep 😴
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Replying to @_GeorgeRudolf
I haven’t! This is the same chip as Sensor Watch, which draws something like 6µA with the LCD and RTC running. This gadget dispenses with the RTC, but it also has an LDO (AP7354) regulating the solar down to 3.3V… anyway you got me, now I’m curious!
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Replying to @MarisKalbergs
It’s a @MicrochipMakes SAM L22, which has an integrated segment LCD driver. I tweaked Adafruit’s basic SAM D21 Feather to work with the low power SAM L21 and L22 microcontrollers, just to have a Feather oriented platform to hack on these chips :)
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Replying to @bradanlane
Now it’s battery free. Tiny solar cell is tiny!
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