goodwatch vs pluto

goodwatch

Replacement board for Casio Calculator Watches using the CC430F6147 (by travisgoodspeed)

pluto

Pluto is a programmable digital watch that re-uses case and LCD panel of the Casio® F-91W. (Hardware) (by carrotIndustries)

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goodwatch		pluto
	Project
2	Mentions	4
477	Stars	436
-	Growth	-
0.0	Activity	0.0
over 1 year ago	Latest Commit	over 4 years ago
C	Language
-	License	GNU General Public License v3.0 only

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

goodwatch

Posts with mentions or reviews of goodwatch. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-10-15.

Pimping my Casio with Oddly Specific Objects' alternate motherboard and firmware
2 projects | news.ycombinator.com | 15 Oct 2022

Motherboard is sort of a misnomer. There are no other boards being plugged into it. That said, it's a pretty cool project. Nothing beats the good watch[1], though.
[1]: https://github.com/travisgoodspeed/goodwatch
How can I modify a casio digital watch?
2 projects | /r/AskElectronics | 4 Feb 2022

pluto

Posts with mentions or reviews of pluto. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-02-04.

Low-cost Smartwatch powered by ESP32 module
1 project | news.ycombinator.com | 8 Aug 2023

Beautiful write up and project!
I remember reading about another Casio retrofit:
https://github.com/carrotIndustries/pluto
That version did not have wireless comms - they touch on that in the faq.
How can I modify a casio digital watch?
2 projects | /r/AskElectronics | 4 Feb 2022
More Casio Watch Mods (LCD Colors, Transparent Display, Micro SD, Strap Remover)
2 projects | news.ycombinator.com | 21 Sep 2021

> Can the ROM be read and flashed back on Casio watches?
I doubt that they use any kind of reprogrammable memory, but you can swap out the entire board like I did: https://github.com/carrotIndustries/pluto
It's not a pebble, but . . it's a watch
1 project | /r/pebble | 18 Mar 2021

That's actually not half bad. It's kind of a commercial version of Pluto, the custom PCB for a Casio F91W.

What are some alternatives?

When comparing goodwatch and pluto you can also consider the following projects:

minimodem - general-purpose software audio FSK modem

mspenv - a dev env to build, flash, and debug msp430 firmware without an IDE

system-bus-radio - Transmits AM radio on computers without radio transmitting hardware.

nRF24-MSP430 - nRF24L01+ Driver for MSP430 Launchpad

QuarkTS - An open-source OS for embedded applications that supports prioritized cooperative scheduling, time control, inter-task communications primitives, hierarchical state machines and CoRoutines.

OpenRTX - Modular Open Source Radio Firmware

msp-lcd - LCD device driver for the msp430 MCU