andrewchilds

6 ms·

31.
by andrewchilds 1y ago
> With such huge upfront fixed costs it only makes sense to build luxury. You really believe that if there were less upfront fixed costs, that developers wouldn’t still default to building “luxury” as long as nothing was stopping them? T
32.
by andrewchilds 1y ago
I say this as someone with an extremely negative opinion of Facebook/Meta/Zuck: there are communities that only exist on Facebook, in the form of private groups. If you want to reach those communities, you have no other choice but
33.
by andrewchilds 2y ago
There are a few made for people with diabetes that offer macro estimates based on a photo, e.g. https://www.snaq.ai , https://gluroo.com . I'm sure others exist that are for a more general or fitness-minded audien
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by andrewchilds 2y ago
Especially true with the runes update. imo, it traded away the thing that made it unique and truly great in the market: the feeling that you’re just writing vanilla HTML, JS, and CSS.
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by andrewchilds 2y ago
I mean, do a search for "steal cookie": https://github.com/search?q=steal+cookie&type=repositories This one has been up for two years: https://github.com/Aker490/Steal-Cookie-Roblox It wo
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by andrewchilds 2y ago
I switched from Arc to Vivaldi and have been mostly happy with the it. Arc has a very polished UI, but has a number of annoying UX decisions. I've found I could customize Vivaldi to a point where it's basically Arc without the UX
37.
by andrewchilds 2y ago
This is the first time I'm looking at SerenityOS and I really appreciate the Win98 vibe. Also this opening line from their FAQ: Will SerenityOS support $THING? Maybe. Maybe not. There is no plan.
38.
by andrewchilds 2y ago
Hi Boris! Thank you for your work on Claude! My one pet peeve with Claude specifically, if I may: I might be working on a Svelte codebase and Claude will happily ignore that context and provide React code. I understand why, but I’d love to
39.
by andrewchilds 2y ago
This is great! Congrats on the relaunch and finding something tangible that can both pay the bills and work as a family business. Very cool that you were able to bring production in-house. The Museum of the Moving Image in Queens, NY has, a
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by andrewchilds 2y ago
Good to know! I was wondering that as well, but wasn't able to easily swap/test different batteries since I was soldering them to the PCB and then sealing the watch. I'll research how to test capacity across different batteri
41.
by andrewchilds 2y ago
Thank you! By flashing I really meant flashing + programming/debugging so I can see serial output. Can you do that OTA? Either way, I'll have to take a closer look.
42.
by andrewchilds 2y ago
I didn't even know about the BLE Glucose Profile - thank you! Valid question about the PineTime! I'd agree that it is an option, although with the dev kit out of stock, flashing a custom firmware would be tricky. I think that&#x27
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by andrewchilds 2y ago
Exactly right!
44.
by andrewchilds 2y ago
Thanks! Yeah, it's odd to me that there are so many cheap Apple Watch clones on Aliexpress with nice AMOLED displays and sensors galore, but nothing hackable, nothing with an e-paper/MIP display. I feel like they would make way mo
45.
by andrewchilds 2y ago
I would start with breadboards and modules from SparkFun or Adafruit. You can mock up a lot of functionality without needing to solder anything. If you get to the point where you're ready to jump into PCB design, check out the /r&
46.
by andrewchilds 2y ago
The ESP32-S3 spends most of its time in deep sleep, only waking up for about 5-10 seconds every 5 minutes. The problem I ran into was that not just the ESP32-S3, every component on the board (the accelerometer, the haptic motor driver, the
47.
by andrewchilds 2y ago
Just to clear up the confusion here: there's basically no risk to this device. It's not inventing numbers on its own. It's simply a secondary display to the same data that's on the phone. The phone alarms are still there
48.
by andrewchilds 2y ago
This is exactly what I was looking for! I had a foggy idea of using a MOSFET and the button to close/open the circuit but I needed something like this to show how it all fits together. Thank you!
49.
by andrewchilds 2y ago
Thank you! I did actually buy a Bangle 2 early on in the project; I was impressed by the Espruino project and by how small the watch is, but it seemed slow to wake, and the screen was tiny, dim and had a lot of light bleed. But you’re makin
50.
by andrewchilds 2y ago
That's great to hear that direct-to-watch pairing leads to a reliable reading. That's a big improvement over where things were a year ago. I am surprised that the watch becomes the primary sync device instead of the phone, but may
51.
by andrewchilds 2y ago
Lots of trial and error! ChatGPT was sometimes helpful with hardware and electrical engineering questions, sometimes not. Since I would need to wait a while for the next version of the PCB to show up, it was important to check and verify th
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by andrewchilds 2y ago
The process was applying steady pressure to the TFT display -> OCA film -> glass, sandwiched between soft rubber, for about a minute. However you need to do a decent job applying the OCA film in the first place - there are youtube vid
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by andrewchilds 2y ago
I did, but they're surprisingly expensive, and a black-and-white display isn't all that exciting for a kid. An always-on display would however be perfect for this use case though.
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by andrewchilds 2y ago
Yes! The BlueJay watch project is amazing, very encouraging to see that he was able to connect directly to the sensor from the watch with the latest version. Totally agree with you - one of the biggest sources of hope for us in those first
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by andrewchilds 2y ago
Thank you! It should be possible now with the G7 to have the watch pair directly with the sensor. We’re still on the G6. Agreed that would be much better than having to go through the iOS app and up to the cloud. Honestly I don’t remember w
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by andrewchilds 2y ago
Thank you, I do too! I wish it was possible to leave it uncoated, but it develops a worn look pretty quickly. Printing MJF through Fictiv was pretty cheap, especially if you don’t need a rush delivery.
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by andrewchilds 2y ago
Thank you! I remember reading your article! Even though you have to maintain it, it’s actually way better than what’s commercially available since you actually have control over _how_ you’re alerted, not to mention when to escalate to frien
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Building a T1D smartwatch for my son from scratch(andrewchilds.com)
594 points by andrewchilds 2y ago|84 comments
59.
by andrewchilds 2y ago
Congrats on the launch, Joshua! Super impressive work. I built a management app for T1D kids+parents, so I know how much work goes into a project like this. Happy to chat and share what I learned from my own attempt at this if that might be
60.
by andrewchilds 2y ago
I’ve been working on a bespoke smartwatch for kids with Type 1 diabetes & their parents. The watch presents reliable CGM data and not much else, so the only distractions from the watch are important medical alerts. It has a novel haptic

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