Live data from Hacker News

The Comet is a handheld Linux computer that brings extensibility

mecha.so

71–79 of 79 posts

Re: The Comet is a handheld Linux computer that brings extensibility

#71

Earlier quoted context omitted.

That looks pretty interesting, do you happen to have any first hand experience with this? In my experience, platforms like this live and die by the pain of unhandled edge cases, so even if the happy path works fine, it can still be something to avoid.

I've released projects based on M5Stack. Not much to say: it does what it claims. Getting the right software libraries in place is a minor pain, but all in all it's pretty straightforward as far as embedded development goes. GP points to the home page, so I don't know which of the very many devices was being referred to. My experience is with M5Stack Tough and I recommend it.

>Getting the right software libraries in place is a minor pain

The developer experience is pretty good though, if you use platformio in the same way you might use Linux package management.

Re: The Comet is a handheld Linux computer that brings extensibility

#73

At the expense of more software dev and a bluetooth module, It would've been more extensible and versatile if it had just used BT for input (HID) and GPIO rather than creating yet another proprietary connector and forbidding the use of GPIO and a keyboard simultaneously. Why not integrate the most popular one and use BT for the rest? Great, we've re-invented what already exists. Sigh.

Having a micro sized detachable BT keyboard would be amazing, but it would still need to charge somehow. It seems like the whole point is that it's one integrated piece you can slip in a pocket, not a collection of hacker gadgets with separate chargers and USB cables you have to be careful about.

Build-in either a keyboard or the gamepad. I have BT mice, keyboards, gamepads, and other things that already handle how they charge (USB-C).

But it's not a single thing if you're carrying around other parts anyhow, and those appear kind of flimsy. And I already have a general purpose computing device with networking capability that goes in my pocket, a smartphone... so why would I want to put it my pocket if it does less?

Re: The Comet is a handheld Linux computer that brings extensibility

#74
post #15
post #11

Earlier quoted context omitted.

I have a Planet Computers Gemini, which is a reinterpretation of the Psion Series 5, running Android but you can also install Linux. They have new models since, but I've heard reports the company is not honoring orders, so caveat emptor. Another option would be one of the GPD Pocket mini-laptops, they actually ship with Ubuntu. I'd gotten one of the older models, but the screen was just too small for my tired eyes: h…

The Gemini looks really neat, but is there any way to generate a Super key event with that keyboard? > I've heard reports the company is not honoring orders Due to the Christmas sale, or in general?

I don't know any more than that, vague recollections of people complaining about them on Reddit, and thought I would be remiss not to mention them.

Re: The Comet is a handheld Linux computer that brings extensibility

#75
post #11

Earlier quoted context omitted.

I have a Planet Computers Gemini, which is a reinterpretation of the Psion Series 5, running Android but you can also install Linux. They have new models since, but I've heard reports the company is not honoring orders, so caveat emptor. Another option would be one of the GPD Pocket mini-laptops, they actually ship with Ubuntu. I'd gotten one of the older models, but the screen was just too small for my tired eyes: h…

The Gemini build quality also left a lot to be desired. As well as the software. I liked the idea but I sold it in the end.

Updating the software is certainly a pain. I switched to Linux than went back to Android. Can't say I noticed any hardware defects other than the usual delicateness of mobile devices, but I am generally careful with my devices (the only person I know who doesn't fray Apple's inadequate cales...), so it hasn't mattered as much as the simple fact the Gemini doesn't have a lot of utility with my aging eyes. I really need at least 12".

Re: The Comet is a handheld Linux computer that brings extensibility

#76

Earlier quoted context omitted.

Having a micro sized detachable BT keyboard would be amazing, but it would still need to charge somehow. It seems like the whole point is that it's one integrated piece you can slip in a pocket, not a collection of hacker gadgets with separate chargers and USB cables you have to be careful about.

Build-in either a keyboard or the gamepad. I have BT mice, keyboards, gamepads, and other things that already handle how they charge (USB-C). But it's not a single thing if you're carrying around other parts anyhow, and those appear kind of flimsy. And I already have a general purpose computing device with networking capability that goes in my pocket, a smartphone... so why would I want to put it my pocket if it does…

You might want a dedicated device to control some lights or scan some barcodes that you can hand off without handing off the most expensive thing you own, that unlocks almost every piece of personal data you have.

A built in keyboard could be a failure point, and gamepads are well known to fail. I'd trust five layers of frameworks and thousands of lines of code more than a cheap switch.

If they really wanted maximum reliability, I would prefer they charge the keypad with NFC and talk to it over either BLE or just the NFC itself.

Re: The Comet is a handheld Linux computer that brings extensibility

#77
post #71

Earlier quoted context omitted.

I've released projects based on M5Stack. Not much to say: it does what it claims. Getting the right software libraries in place is a minor pain, but all in all it's pretty straightforward as far as embedded development goes. GP points to the home page, so I don't know which of the very many devices was being referred to. My experience is with M5Stack Tough and I recommend it.

>Getting the right software libraries in place is a minor pain The developer experience is pretty good though, if you use platformio in the same way you might use Linux package management.

Oh, yeah. By "minor pain" I meant it took a couple of hours as opposed to a few minutes.

Re: The Comet is a handheld Linux computer that brings extensibility

#78
post #13

If you want something similar to this RIGHT NOW that has thousands of available parts and millions of users, see https://m5stack.com/

That looks pretty interesting, do you happen to have any first hand experience with this? In my experience, platforms like this live and die by the pain of unhandled edge cases, so even if the happy path works fine, it can still be something to avoid.

I'm using 2 M5StickC with ESPHome to automate stuff. ESPHome is very easy to configure. Just check if the add-ons you want are supported or not.

Re: The Comet is a handheld Linux computer that brings extensibility

#79
The Allen Key (a.k.a Hex Key) stored within the device itself is (marketing) genius--that to my surprise doesn't seem to feature very prominently in their marketing... :D

(Perhaps because the audience to which such a thing seems to be marketing genius isn't their current desired target? :) )

From my perspective the interior Allen Key: immediately acts as a point of uniqueness; communicates something very specific about the product; and, potentially, serves to calibrate potential customer expectations.

(Exactly what the "very specific" thing communicated is, is obviously open to interpretation: it could be "the enclosed Allen Key means this device requires tinkering"; or, alternatively, "the enclosed Allen Key means I don't have to tinker with this device but that is an option available to me".)

The Comet is the most interesting thing I've seen come out of CES this week.

I'd heard of neither the product nor the company before I watched these videos (in this order):

* "Mecha Comet Linux Handheld (CES 2025)" (~5 min): https://www.youtube-nocookie.com/embed/89pAwl55HJw

* "Mecha Comet Modular Linux Handheld at #ces2025, NXP i.MX8, NVMe, Debian, Open Source Extensions, GPU" (~12 min): https://www.youtube-nocookie.com/embed/DB-0H8Q4d1U

* "Mecha Comet Teaser" (~1 min): https://www.youtube-nocookie.com/embed/AGHmvOFkUKw

In the first two videos the company founder does a really good job of demonstrating/explaining device features, describing some of the context for the product; and, the motivation behind particular implementation details (e.g. using an NXP processor due to an absence of NDA requirements & their reputation for upstreaming Linux kernel patches).

On the software side, they are using Rust for development of various elements of the device OS/GUI (a detail that might be of interest to some people) including a toolkit for Wayland clients (a detail that might be of interest to some other people :) ). (And they appear to be doing a significant amount of software development "in the open", based on a brief look at the level of activity in various repos/branches.)

However, particularly while watching the first video there was a nagging feeling of "Hmmm, does this all sound a bit too good to be true?" (partly for specific reasons e.g. an impending Kickstarter campaign launch; and, partly just from a general sense of "there's always some reason why we can't have nice things" :) ).

The founder did specify that (as I understand it) they aren't dependent on the Kickstarter for funding of manufacturing; and, that part of the reason the KS campaign wouldn't launch for couple of months was that they wanted to minimise the time between people's support & receipt of their campaign "reward" device.

(Obviously have to take the founder's word on that; and, also, plans don't always go according to... plan.)

Perhaps, amusingly, after spending some time exploring the Mecha web site & source repos, discovering development had been underway for around three years, and, getting a bit more insight into what the company's overall plan seemed to be, I started to wonder "Is this starting to seem too slick? How has this been funded so far & what is the monetization plan going forward?". :D

On the positive side--from a company financial sustainability point of view--it seems The Comet isn't a one-off "pie in the sky tinkering toy for Linux nerds" (nonpejorative :) ) but more of a combination proving-ground/audience-attractor/development-kit for a series of more industrial/enterprise-focused boards & services that serve as a platform for people/companies building custom sensor-orientated device solutions.

On the potentially negative side--from a "is some big company going to acquire Mecha and take away our toy" point of view--well, the same information is also true. :)

However, assuming that Mecha delivers on its stated intent around Open Source (which seems like it might be off to a reasonable start based on a brief look at its current repos), before any such acquisition might happen then such an eventuality would be "unfortunate" but not an immediate death knell for existing units in people's hands.

Having said all that:

The Comet definitely seems like an intriguing device with interesting potential but--given the many sagas of the many devices from the many companies that have come before it--I think it would be beneficial for the company to share more about the business context and overall roadmap to help potential supporters be more informed.

And, of course, it would be wise for potential supporters to exercise a degree of caution consummate to their ability to absorb the impact of their cash or device being "flushed down the toilet", as it were. :)

(Disclosure: While I am very much interested in embedded Linux devices like this I am not likely to purchase The Comet any time soon due to a lack of disposable income.)

Post reply on HN