To the author and creator, a huge thank you for the inspiration, education. Like one other poster mentioned i too would like a quick donate button for this. I do use for other projects because i think its important to acknowledge people who make stuff like this. Whether is code or hardware, or sometimes even just ideas on KS, give a few bucks if you can to share the fun and inspiration and reward others.
TI also for a short time made more advanced version with bluetooth, sane industrial design and certified radio which was quite similar to Pebble.
Mouser: https://www.mouser.com/search/refine.aspx?Ntk=P_MarCom&Ntt=1...
Digikey: https://www.digikey.com/en/product-highlight/t/texas-instrum...
(And no, a Paypal link is not an answer to this problem)
@author (if here). Thanks, fantastic read and an even better gadget. You made me feel “O my, I need this!”.
Would recommend checking out both the Hackaday blog and Hackaday.io. The blog covers news articles about hacks, and Hackaday.io is a place where a community of hackers share their own projects:
The main negatives I could say about Hackaday is the comment section on the blog is frequently a waste of time, and the UI of Hackaday.io could do with some improvements (IMO), but there's plenty of interesting projects to check out, and it's easy to ignore the comments section.
I'll hold this thought dear for the rest of my life, thanks for sharing this amazing project.
http://www.gabotronics.com/oscilloscopes/oscilloscope-watch....
(Disclaimer: I'm one of the disappointed backers of his kickstarter campaign, which went nowhere...)
If there were another attempt at making a watch like this one, I'd definitely be a backer. I think this is really an ideal time for someone to start up an open-source, powerful watch platform ..
Casio digital watch with built-in infrared remote for your TV
Good times. Actually not very useful but they looked so hot back then and I remember just laying on the floor looking at the pictures of such watches.
That was so fun when I was a teenager.
https://www.amazon.com/LANRUO-Pocket-Aluminum-Windows-x7-Z87...
I wonder why two thousand years? All the common day of the week algorithms should work as long as the current leap year pattern [1] continues.
[1] (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0)
Someone should tell Casio about this, and forward them http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv018.cg... as an example of what can happen when insiders successfully pull strings.
In this particular case the poster in the linked thread worked deep inside HP and lobbied hard to get an SDK released and manufacture the calculator with a nondescript set of pins inside the battery compartment that permitted reflashing.
The result was the "WP 34s" firmware: https://commerce.hpcalc.org/34s.php is a basic overview (unknown if clicking Order works, email first) and https://sourceforge.net/projects/wp34s/ has full source code, details - and emulators for Linux/Windows/macOS that Just Work™, I might add.
This firmware was written from scratch - the SDK provided a functioning compiler and basic architectural info about the calculator, but no sample code. The above firmware was thus written entirely from scratch. It implements all standard functionality (re-implements, heh) as well as a number of advanced fan-built features (more info at the SF link above).
IIUC, the HP-20b is sadly no longer in active production, so getting one's hands on this interesting bit of kit is tricky. But despite the fact that this never really made headline news the whole venture worked perfectly. Thought I'd mention it.
As for what I think Casio should do: the TL;DR is that it's really, really hard to do things that are offensive or damaging from a business standpoint with a 8-char 7-segment LCD and a tiny keypad. This isn't a smartwatch with a full-color LCD. So there's that.
The real problem is that, well, what little market demand is left for wrist calculator watches is now split between the option of purchasing a smartwatch instead. So demand would be probably within the <2%-of-entire-market range.
But if there happen to have any active production lines still producing these calculator watches, I can totally see Casio being able to very cheaply swap in a PCB with something like what OP has created.
NB. Since I have no idea how far this comment could reach - by all means copypasta.
The worst of the worst meetings.
