Tweets
RT @crowd_supply: Coming soon: Sensor Watch from @josecastillo, a hackable ARM Cortex M0+ upgrade for the classic Casio F-91W wristwatch.…
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Replying to @josecastillo
Oh right! Also! I’m partnering with @crowd_supply to make the watch board happen! For updates about that, you can sign up here. (no promises on the sticker, haha)
Also, keep your eyes peeled; should be some interesting happenings on that later this week 🤫 https://www.crowdsupply.com/oddly-specific-objects/sensor-watch(original)
Replying to @jasoncoon_
Haha @the_prepared was the first one to notice the pun, and I’m super into it! https://mobile.twitter.com/the_prepared/status/1453009386218065928
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Replying to @arturo182
Thanks for the heads-up, that’s super disappointing. The last time I ordered from them was in the Obama years, but I’ll definitely plan to look elsewhere this time around.
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Replying to @josecastillo
if you watch the design time-lapse, you can see me really casting about for 80’s vaporwave inspiration and not getting there. then I remembered this old tweet, and suddenly it all came together. https://twitter.com/josecastillo/status/1339281746894987265
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Went on a bit of a design tear last night, imagining a vinyl sticker that could go over the F-91W’s acrylic watch face. Starfield, check. Lazers, check. PCB artwork is actually a purple @oshpark circuit board, backlit under a microscope; the pink setting sun is just a large via. https://twitter.com/josecastillo/status/1457927251597611010
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Replying to @bradanlane and @stickermule
Oh I totally hear you, when it comes to optimizing BOM cost you have to be relentless.
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Replying to @bradanlane
Thanks! And I mean, relative to everything else we’re doing they’re a steal. A few years back I had @stickermule make 1,000 of these (5 sq. inches) for 31¢ a pop. This design is much, much smaller; even for a small test run of like 50, they can probably be had for a buck a piece.
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Replying to @josecastillo
This design timelapse was a lot of figuring out where I wanted to go, but hey, sometimes inspiration is like that! Anyway, the idea: a die-cut sticker to go over the watch bezel. It’s a known process, and surprisingly affordable. (I promise the design gets better toward the end!)
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Replying to @josecastillo
also hmm. this half-assed labelmaker addition has given me an IDEA.
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Replying to @josecastillo
The cast of characters for our test. This feels like a reasonable list of faces a user might have: a simple clock and a beat time display (which uses a bit more power), plus temperature logging once an hour, all year long. Also Day One and Voltage, to keep tabs on the experiment.
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Sensor Watch battery test! Day 0; 3.24V. Now I just have to wear it for a year.
The graph is of a coin cell’s typical drain @ 97µA; our low energy mode sips less than 10. Anyway the goal is for this watch to still be ticking come next November (tho I’d love for it to see 2023 🥳)
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Replying to @oakdevtech
There are a lot of worst aspects there, for sure.
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Replying to @oakdevtech
This is interesting, but I’d argue misleading in the context of cryptocurrency. The article says that their direct emissions (i.e. the cost of running offices and keeping a ledger) are relatively low; it’s the broader activities their loans enable that create all those emissions.
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Replying to @oakdevtech
honestly from a purely aesthetic standpoint, i’m not sure which of these i find more distressing.
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How familiar are you with climate change?
☐ What’s climate change?
☐ I know enough to think it’s cool!
☐ I avoid mass transit, and try to drive or fly when I can.
☐ I roll coal every weekend with the boys! https://twitter.com/textfiles/status/1457751651465449475(original)
Replying to @josecastillo
note that I am not in fact 22,956 days old. to avoid disclosing my exact date of birth, this screen is counting up from January 2, 1959 — a date that I would argue marks the beginning of humanity’s spacefaring epoch. https://twitter.com/josecastillo/status/1365891839472074755
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New watch face: Day One. Inspired by a conversation over beers with @rohansingh, it’s simple: counts days from the day you were born (or any other date, really).
A version that counts down to your anticipated death is left as an exercise to the reader. 💀 https://github.com/joeycastillo/Sensor-Watch/blob/1b4bfe35c2ee402314a4aab503bc6d5890eeee91/movement/watch_faces/complications/day_one_face.c
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Replying to @josecastillo
UPDATE: my sister has attempted the meme.
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Added a voltage display watch face to Movement last night, in the hopes of setting up a daily driver for a year-long battery life test. Ended up requiring some new ADC functionality, which of course means a lot of new ADC documentation: https://github.com/joeycastillo/Sensor-Watch/commit/0f03257ee9ef46ac61e20f7201e2c50dedff01b2#diff-c52a0aa614db7b7ea906b357d77b3ef4253c9881e14f1604205debb646593a6fR105
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“I would do anything for love but I won’t do it right now” https://twitter.com/bruleebitch/status/1456520178607460381
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Replying to @yacky_yam and @RFattenuator
It should! Anything made by Casio with the F-91W marking on the front should be compatible; there are a lot of styles. Note though that there counterfeits on eBay that are definitely not. You can usually spot them for being suspiciously cheap and from the other side of the world.
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Replying to @zeromem0
FWIW I finally think I know how I’d go about it, but it’s going to be a much more complicated design. can’t use the SAM L22 because the data bank’s display runs on 4V, and the L22’s LCD driver maxes out at 3.6 :(
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Replying to @RFattenuator
This only started out as a regular old F-91W! I’ve since given it a total brain replacement, in the form of a new circuit board of my own design :) https://www.crowdsupply.com/oddly-specific-objects/sensor-watch
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Replying to @arturo182
I hear you. I brought this old gadget to the shop a few weeks ago just to have it on my desk to stare at it, in the hopes it might convince me to build something in this direction :)
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Replying to @josecastillo
my theory is that the bedrooms get colder overnight because the thermostat for the heater is in the main room, far from windows and doors. I suppose if I put the watch on my nightstand instead tonight, I can put that theory to the test.
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used the Sensor Watch temperature logger to its exact purpose today. Roommates were worried our heater wasn’t working, despite it being set to 68° overnight. One asked if I had a thermometer, and I spotted the watch sitting on a coffee table. I have a thermometer and then some :)
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Replying to @josecastillo
“Notable for containing PDP-10 assembly language code nearly 22 years after the manufacturer ceased production of the PDP-10, and for being technically possible.”
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Replying to @josecastillo
wow ok, I have to admit, they got me. Wikipedia’s page on UTF-9 redirects to this: https://en.wikipedia.org/wiki/UTF-9
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These are the things that happen when you #voteforthedemocrat. Let’s keep at it! https://twitter.com/Mikel_Jollett/status/1456833707877146631
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Replying to @arturo182
it’s been 57 minutes and y’all have gone from all the way from please to plans. You love to see it :)
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Replying to @josecastillo
I’m comforted to know that it’s possible to support the 💩 emoji on the PDP-10, a computer that predates the moon landing. Also that thanks to RFC 4042 you can do so with maximal efficiency, using just three nonets instead of four.
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no matter how much you think you know about unicode, there’s always more. Today in today-i-learned: UTF… 9? https://datatracker.ietf.org/doc/html/rfc4042
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But Siri, it’s Saturday.
…oh. I see how it is.
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Replying to @GeekMomProjects
political in-jokes AND planetary science facts? This tweet has it all!
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Our long national infrastructure week is over. https://twitter.com/BenjySarlin/status/1456822687251275778
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What were u doing before?!
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let’s gooooo!
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Replying to @802dotJustin
oh it’s definitely fake… and yet…
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oh no. https://twitter.com/crulge/status/1455677599867416580
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Replying to @insolace
me too
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Replying to @insolace
Personally? I think we failed America in 2016, and now the rise of fascism here is as inevitable as it was in the Weimar Republic post-WWI. I’m hoping it’s not. I’m going to advocate against it. But I’m also stocking up on canned goods bc if history is any indication, this is it.
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Replying to @insolace
Math aside, history says this is the end of our story.
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Replying to @insolace
We got the smallest possible bill because we have the smallest possible majority. Want a bigger bill? Elect a bigger majority. Unless we have a secret plan for notching progressive victories in the face of electoral losses, I’m told that’s how the math works.
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Replying to @insolace
It’s okay to feel stoked about an extension of unemployment benefits that Republicans would have gleefully killed! It’s also okay to feel stoked about another bite at paid family leave, if — and only if! — we #voteforthedemocrat in fantastically overwhelming numbers come 2022.
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Replying to @tahnok
oof, that’s a glitch. I meant to deprecate those functions, but maybe doxygen didn’t get the syntax? Hoping to remove those functions tho for the 0.1 milestone.
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Replying to @insolace
that’s not an unfair point; my thought was that in the leadup to this election i saw a lot of rhetoric about what dems were failing to do, and not about what they’d done. I’m not blaming folks; I’m asking them to be more stoked about small wins so we can build toward bigger ones.
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Replying to @josecastillo
Like, imagine a nationwide abortion ban as their Medicare for All. If they were like us they’d be disillusioned over the R’s failure to get it done year after year. Instead they take whatever they can get, and keep voting for their people. And now they’re on the cusp of that win.
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whatever the problem with the dems, the bigger problem is our voters. R’s will do whatever evil they can, and even if they didn’t get it all, their voters will always be stoked to give em another bite at the apple. D’s do a few good things and all we do is complain it isn’t more.
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my sis showed me this post of jeff bezos trying to PR his way into everyone’s good graces. As a reminder, this was literally the first thing he said when he got back from space. https://twitter.com/joroulette/status/1417512882271555587
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