Clamshell handhelds from Planet Computers

I’m glad to present you a new gallery dedicated to handheld computers produced by Planet Computers Ltd.
This gallery extends the gallery introduced in the previous post Gemini PDA – modern clamshell handheld for content creators.
Besides Gemini PDA this gallery also stars Cosmo Communicator. Both of my devices are signed by CEO of Planet Computers – Dr. Janko Mrsic-Flogel.

Here are two interesting interviews of Dr. Janko Mrsic-Flogel reviewing the new handheld:
Cosmo Communicator interview
Cosmo Communicator shipping now to backers

Military handhelds

I’m glad to present you a new gallery dedicated to military handhelds. The gallery stars two devices: General Dynamics Itronix IX750 GoBook MR-1 and Advantech P37B.
Both devices are very tough and robust, compared to regular consumer handheld computers. Despite that General Dynamics GoBook MR-1 looks like a ruggedized version of Vulcan Flipstart, the number of differences between these two devices is enormous.

Hewlett-Packard’s first handheld

Hewlett-Packard has played an exceptional role in the history of handheld computers. This company gave us truly remarkable palmtops 100LX/200LX, PDA iPaq hx4700 and Jornada 720. Some people still use these devices on a daily basis.
But what was the first handheld computer created by Hewlett-Packard?

You may consider HP-75C as the first HP handheld. The device is not very small, and the possibility of using it as a handheld is questionable.
But actually it depends on the criterias of a handheld computer.

Another candidate is the HP-67, which was introduced in 1976.
HP-67 was world’s first Turing-Complete handheld device. This is a strong argument in favor of transferring this device from calculators to the category of handheld computers.

Gemini PDA – modern clamshell handheld for content creators

In 2017 Planet Conputers introduced Gemini PDA. This handheld offers physical keyboard and is designed as modern replacement for Psion 5 Series.

At Planet Computers we believe in freedom. The freedom to create on the move.
Our powerful pocket computers are clamshell devices which feature integrated physical keyboards and the ability to multi-boot operating systems, helping increase your productivity.


Let’s compare Gemini PDA and Psion 5MX side-by-side. These devices differ in release date by almost 20 years.

Engraving handheld computers

For the past couple of years I’ve been using 7-inch handhelds from One-Netbook as my main workstation.
The devices do their job pretty well. And from an aesthetic point of view, I find these devices quite pleasing. The only thing that bothered me was a bit boring lid with no marks what so ever. Therefore I decided to put my custom logo using a laser engraving technique. The lady in the engraving is Themis (quite unusual, without a sword and with open eyes).

Sabrent Rocket NVME SSD inside One-Netbook A1

Sabrent Rocket is one of the fastest NVME SSD series in the formfactor of M.2 2242. According to the manufacturer, "its speed performance can reach up to 2500MB/s read and 2100MB/s write" (ref).
Here is what you can expect from this SSD inserted into the One-Netbook A1 handheld computer:

It’s worth mentioning that the default One-Netbook SSD shows very similar performance.

So there is no reason to replace SSD in order to get higher speed. The default SSD is pretty much the best you can achieve.

Gentoo on a One-Netbook A1

I’m glad to present you the new manual: Gentoo on a One-Netbook A1. This manual is intended to help user to configure Gentoo distribution of the GNU/Linux operating system for One-Netbook A1 handheld computer. Despite the fact that the manufacturer claims Linux support on the product description page, to my knowledge there is no Linux distribution, which actually supports the device out of the box. Therefore I hope that this manual will be useful for some A1 owners.

I would also like to note that there are several other Gentoo manuals available for different handheld computer: