Tweets
Replying to @josecastillo
(original)
Replying to @RueNahcMohr
It may not be the right fit for your project, but personally, I’ll never pass up an opportunity to recommend GNU Unifiont: https://en.wikipedia.org/wiki/GNU_Unifont
(original)
Replying to @M_uh_lee
One of my colleagues was telling me that some places now want you to buy riders? like if you commute to work, you can add a separate plan for broken arm coverage, which can help pay your deductible for that. it all sounds super fucked, which of course makes it utterly believable.
(original)
Replying to @bitshiftmask
Awesome!! TBH tho, I need to play around and explore a bit first… for real, before today I’d never even moved a servo.
(original)
me: with remoticon done, now I can focus on the watch stuff I’ve been putting off!
also me:
(original)
Replying to @CRImierTech and @dcelectr
we’re all in pain over the Thinkfriend that wasn’t 🥲 https://twitter.com/NanoRaptor/status/1456955531621388294
(original)
Replying to @superfrce and @hackaday
I believe Hackaday is going to edit each talk and post them as separate videos in the coming weeks!
(original)
happening in under 10 minutes! @GeekMomProjects presents her talk on building systems of modular, interconnectable PCBs at @hackaday #Remoticon. I’ve been looking forward to this one all day! 😃 https://www.youtube.com/watch?v=x281ImH68Ik
(original)
My @hackaday #remoticon presentation, “Teaching an Old LCD New Tricks”, happens in just 90 minutes! But you should totally join now to catch some of the great talks happening all day long, from LIGO to laptops to LED’s :) https://www.youtube.com/watch?v=x281ImH68Ik
(original)
Replying to @jasoncoon_
This is wild, I love it! Also at this point I think you’ve surpassed millimeters as a unit of measurement; this is fully a half a meter of LED’s.
(original)
Replying to @yacky_yam
well I’ll be. The device won’t boot below 1.72 volts, but if it’s already running, it’ll keep the screen on all the way down to the minimum recommended voltage of 1.62 volts (and a bit further)! I’m impressed.
(original)
had to cut some slides to give myself some breathing room, and alas, my favorite joke had to get the axe. Evergreen sentiment, tho. #remoticon
(original)
Replying to @theavalkyrie
I’m suddenly aware of how awesome you are! I was aware of it before. But I’m also aware of it now :)
(original)
Replying to @yacky_yam
In theory, this microcontroller can operate down to 1.62 V. In practice, I doubt that the charge pump for the LCD will work that low. I have a new gadget for testing the thing at low power; once I have some spare cycles next week, I hope to give it a go at starvation voltages :)
(original)
Replying to @josecastillo
Wow! I had to double check that this test actually started ten days ago; it feels like weeks have passed, the days have been so full. Anyway, battery test, day 10. I sense we’re still at the beginning of the curve: 2.97 volts.
(original)
my script is done, my slides are in, the demos work and everything seems to fit, if barely. Worst case, I can cut a section on the fly.
I’m calling it an early day. I’ve earned it.(original)
Replying to @josecastillo
side note: this scope trace of cutting power to a watch movement feels surprisingly relatable
(original)
Replying to @GeekMomProjects
Awesome! Yea I keep adding notes on which words to emphasize, and spelling things phonetically to make sure I don’t stumble (complex vs cəmplex)… but yea after a while I’m hoping to develop an instinct for these slides :)
(original)
#remoticon dry run! Coming in at 29:40, if the demo gods smile on me. 😇
(original)
Replying to @bitshiftmask
Like, a fit of creativity for something wildly different can be a nice break from “doing the work” on a main project. I’ll definitely take a week or two, do it enough so it’s ready for future me to pick up the baton. But then I’m so down to drop it and get back to the main event.
(original)
Replying to @bitshiftmask
I have this issue! The way I tend to deal is to embrace the fit, but not change focus for too long. Like, I do the thing that’s stuck in my head and get it to the starting line; then I’m down to drop it and return to the thing I’m focusing on. The other thing will be there later.
(original)
Replying to @josecastillo
edit tweet button when?
(original)
Replying to @josecastillo
OH NO, HOW DID I TYPO THIS?! It’s supposed to be 11:00 PM Central European Time! I must have pasted the end time instead of the start time. 🤦🏽♂️ https://www.timeanddate.com/worldclock/fixedtime.html?iso=20211120T14&p1=224&am=30
(original)
Don’t mind me, just finishing up my slides for @hackaday #remoticon. “Teaching An Old LCD New Tricks” happens this coming Saturday. 2:00 PM on the West Coast, 5:00 PM on the East, 11:30 PM Central European Time. Full schedule and (free!) tickets here: https://remoticon.io/
(original)
RT @omevel: Voilà, j’ai trouvé une Casio F-91W, j’attends maintenant la carte du fabuleux @josecastillo.
https://www.crowdsupply.com/oddly-specific-objects/sensor-watch
#Discard…
(original)
Replying to @theavalkyrie and @0xjairo
OMG, how do I not have this already? I spend most of most days in VSCode! Just installed, thank you for making it!! :D
(original)
Replying to @timonsku
“Spec’s haunted.”
“What?”
*loading a pistol* “Spec’s haunted.”(original)
god I love Wolfram Alpha.
(original)
Replying to @tahnok
There was! I don’t know if I ever uploaded it, but if I did it had a big design error (power plane) that would need fixing. The bigger issue is that the watch LCD is so thin and fine pitch that it’s hard to 3D print something that holds it in place correctly without crushing it.
(original)
Replying to @tahnok
They are! I believe they’re in the repo under OSO-FEAL (Feather with LCD), but you’ll need one of the custom LCD’s I had fabricated to get it working. Hoping to have more of these soon; need to figure out whether they’re part of the campaign or something separate.
(original)
Replying to @theavalkyrie and @MakeAugusta
I did come down, but alas I already headed back! It was a really quick trip. I’ll definitely reach out next time I’m out your direction though! I do road trip fairly often 😄
(original)
Replying to @jprodgers and @wayneandlayne
I need to look into the state of the art in 9-DOF sensors… it sounds like your use case could happen with one of those and the phototransistor, but so far I’ve mostly been looking at much simpler accelerometers that don’t incorporate magnetic field sensing.
(original)
Replying to @jprodgers and @wayneandlayne
Yep, getting signals into the watch is key, and where light makes a lot of sense. Plenty of ways to get data out of the watch (LCD screen, LED’s, piezo buzzer), but the phototransistor feels like it’ll be the first reliable channel into the watch case :)
(original)
New SMD challenge just dropped. https://twitter.com/DHammarskjold/status/1460352495868280835
(original)
Replying to @matthewwilkes
That is a handsome looking watch!
(original)
Replying to @keesplattel
Yep! the sensor board plugs in such that the reverse-mount sensor is facing upwards toward the screen. The reflective backing on the LCD isn’t fully opaque, so it acts like a neutral density filter that lets some light through, actually weirdly just the right amount it seems.
(original)
Replying to @mr_rythom
soon, I hope!!
(original)
Replying to @josecastillo
Anyway, this is just my morning brain-dump; today is mostly about finishing up my @hackaday #remoticon slides and rehearsing so I can fit everything I want to talk about on Saturday. But I’ll be returning to this light-sensing sensor board in the coming days. </thread>
(original)
Replying to @josecastillo
This also means that sensor boards like this aren’t affected by the silicon shortage. My phototransistor is literally one transistor, and my thermistor is basically a fleck of rust that reacts to the temperature. DigiKey has 42,000 and 350,000 of these in stock, respectively. 5/6
(original)
Replying to @josecastillo
In the end, there’s no magic: if measuring something requires turning a current into a voltage and a voltage into a measurement, you can power up a piece of silicon that does it and provides the result over a 2-wire bus, or you can do it yourself. I’ve been sleeping on this fact.
(original)
Replying to @josecastillo
Second: I’ve been reaching for I²C sensors way too often. The fact is, if your MCU has an analog to digital converter, you can measure a staggering number of properties of the outside world — with lower current consumption since you’re not powering the ADC on your I²C sensor. 3/5
(original)
Replying to @josecastillo
First: this proves out the versatility of the 9-pin sensor board idea. In the 32 square millimeters available for extra parts, we’re able to fit both a light sensor and a temperature sensor, and the board uses 4 of 5 available GPIO (ignoring I²C pins). 2/6 https://twitter.com/josecastillo/status/1460068761034182657
(original)
A whole lot on deck today, but starting with some notes on last night’s (reasonably) expected, but nevertheless epic success with the light + temperature sensor board. I don’t know if this will be accurate enough to function as a light meter, but it definitely has the range. 1/6
(original)
Replying to @ryancdotorg, @supersat and @MLE_Online
I’ve found exactly the same thing… every time I get that burst of ads I fear the jig is up.
(original)
Replying to @MG
thanks for this! Honestly it’s just reassuring to hear that folks whose work I look up to and admire face some of these same issues and challenges, and have to figure out ways to work through them :)
(original)
this one is definitely a “to be continued” in the coming days. but suffice it to say I’m blowing my own mind with the state of the work this week, and it hasn’t even really begun.
(original)
Replying to @josecastillo
UPDATE: it works.
(original)
Replying to @josecastillo
side note, can I confess that a huge motivator for my relentless silkscreen documentation is pure laziness? I want to test this board tonight. I don’t want to go hunting for the schematic. Thankfully, past-Joey put the pin assignments like right there.
(original)
oh, it’s beautiful!
(now let’s just hope it works LOL)
(original)
Replying to @rohansingh
huh, today I learned!
(original)