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kvitenj.bsky.social
kvitenj
@kvitenj.bsky.social
19 followers 17 following 13 posts
a dwarf living in a cozy cave
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kvitenj.bsky.social
Long time no see.
PocketTerm HW check is done. I selected the LoRa module, audio, and microphone chips to use in next revision. Also, I'll move the keyboard to a separate controller and will use terminal blocks instead of the pins. And I have second display so expect DOOM demo soon.
#embedded #esp32
Homebrew laptop with a 12x4 ortholinear keyboard and a tiny wireless mouse near it. On the laptop keyboard, there are two pocket terminals, a few terminal connector blocks, a LoRa module, a digital microphone and sound amplifier module with a speaker, and a large LCD module the size of a pocket terminal. A near photo of the top side of a pocket terminal with a terminal connector block and an antenna attached. Front view of a pocket terminal with a terminal connector block, one unattached with some wires, and an antenna attached.
February 6, 2026 at 4:27 PM
kvitenj.bsky.social
No progress on the Pocket Terminal yet. Still don't have time to start FW development due to the main job. But I have switched my Main PC setup to a smaller case, so I now have a lot of free space on the desk - before-and-after photos
Photo of the desk setup before the PC case swap. Computers on the table, left-to-right: Retro PC with desktop case and CRT monitor on top, Gaming PC in a large aquarium case in desktop orientation and display hanging on top of it, Streaming PC in the smaller aquarium case in tower orientation and a smaller display hanging on top of it. There is also a large mousepad, half of which is covered by a Gaming PC case. The mouse pad is in a funny, large carpet style Photo of the desk setup after the PC case swap. Computers on the table, left-to-right: Retro PC with desktop case and CRT monitor on top, Gaming PC in a smaller aquarium case in tower orientation and display hanging on top of it, Streaming PC in the smaller aquarium case in tower orientation and a smaller display hanging on top of it. There is also a large mousepad in a funny, large carpet style
October 23, 2025 at 3:44 PM
kvitenj.bsky.social
Another photo to understand the size of the device

#embedded #esp32 #3dprint
A hand holding a credit card-sized computer in a 3D-printed case. There are antennas at the top, a display, and a cute squid logo. Under the display, there are PCB traces styled like old Norse runes, which translate to "knowledge". At the bottom part, there are four rows of buttons, each row has 12 buttons.
October 10, 2025 at 4:45 PM
kvitenj.bsky.social
First prototype assembled and ready for FW development. I checked the ESP UART, and the battery charger works well. Now need to write some software to check the display and radio module
A credit card-sized computer PCB with buttons and a processor module is placed on the small heated reflow table to solder the components A credit card-sized computer board front view showing the display and processing module at the top part and keyboard buttons at the bottom, as well as an antenna soldered to the board's top A credit card-sized computer board, back view showing the battery at the bottom part and some components and sockets at the top, as well as an antenna soldered to the board's top A credit card-sized computer in a 3D-printed case. There are antennas at the top, a display, and a cute squid logo. Under the display, there are PCB traces styled like old Norse runes, which translate to "knowledge". At the bottom part, there are four rows of buttons, each row has 12 buttons.
October 10, 2025 at 4:36 PM
kvitenj.bsky.social
Made some progress on case 3D prints for the prototype. Buttons are fixed in case, but still movable. I had to use a 0.2 nozzle to make print-in-place possible. The logo to the right of the display is still under finalization.
Three cases for a credit card-sized computer in different colors: black, dark green, and blue. Lying flat on the desk. The case has a window for an OLED display, a place for a logo near the display window, and keyboard keys in 4 rows with 12 keys each. Between the display window and the keyboard, there is text stylized as PCB traces. The text is the word "knowledge" in Old Norse runes Three cases for a credit card-sized computer in different colors: black, dark green, and blue. One is lying flat on the desk, the other is standing on the side, showing socket holes. The case has a window for an OLED display, a place for a logo near the display window, and keyboard keys in 4 rows with 12 keys each. Between the display window and the keyboard, there is text stylized as PCB traces. The text is the word "knowledge" in Old Norse runes
September 29, 2025 at 1:13 PM
kvitenj.bsky.social
First prototype PCB finalized and ordered. While waiting for the boards, I'll continue to polish the PCB and probably change a few things, like a smaller charging IC, etc. Also working on the case 3D models
Image show the render of the front side of credit card sized computer, with keyboard, display and controlled module Image show the render of the back side of credit card sized computer, with SD card socket, USB and other components for power supply and UART interface. There is a funny image of dwarf in the bikini on the board
September 19, 2025 at 12:09 AM
kvitenj.bsky.social
Made some progress on the Cardputer project. Layout will be slightly changed on the tracing stage. Also, I am thinking about replacing 128x32 OLED with 212x104 e-ink display, but need to run some performance tests before.
Image show the render of the front side of credit card sized computer, with keyboard, display and controlled module Image show the render of the back side of credit card sized computer, with SD card socket, USB and other components for power supply and UART interface
September 5, 2025 at 1:53 PM
kvitenj.bsky.social
I am currently working on the prototype of my own card computer. Inspired by M5Stack Cardputer. The project was on pause due to my day job, but next week I'll be on vacation, so I'll try to make some progress on Cardputer.
github.com/kvitenj/Data...
gitlab.com/kvitenj/Data...
Image show the prototype of credit card sized computer, with keyboard and display
August 24, 2025 at 3:45 AM
kvitenj.bsky.social
Hey, my first post here, and a small introduction:
My name is kvitenj. I am a dwarf living in a cozy cave. The cave is a well-illuminated space decorated with flower pots. There is some moss here and there, a comfy bed, and a tech corner to craft complex electronic gadgets.
August 22, 2025 at 12:07 PM