Author Archives: Administrator

About Administrator

I am owner of this site.

HUB08 LED board (matrix) display protocol and interface to STM32F103

Posted on August 3, 2022 by Administrator

There are lots of China made LED board with HUB08 connector. Boards typically are single or two color ones, without variable brightness. Boards can be connected in daisy chain mode using 16 pin connector. There are specialized MCU boards from … Continue reading →

Posted in LED, MCU | Leave a comment

Power standard for my computer collection

Posted on June 7, 2022 by Administrator

I have small collection of vintage computers. Several computers do not have PSU, other one have very specific ones. The problem is with some that looks like “standard”, have same connector like others, but have reversed polarity. Like ZX Spectrum … Continue reading →

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How to print, preview in VB Studio Express

Posted on November 27, 2021 by Administrator

There is classic basic program for Commodore 64 computer to print maze on the screen. This program random prints “/” and “\” character on screen. I wanted to implement same program on modern computer and print the result. Not only … Continue reading →

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Quick hack – optical mouse for Amiga (or Atari) computer

Posted on October 9, 2021 by Administrator

I was testing old Amiga computer and noticed, that somewhere I lost the mouse. It is proprietary mouse for Amiga computer, it even does not work with Atari ones. The mouse itself is very simple- only raw quadrature information is … Continue reading →

Posted in Anything, Vandalising | Leave a comment

8-bit font tool: editor, rotator, mirror

Posted on September 4, 2021 by Administrator

This is small tool writtent in Visual Studio Express VB. Main purpose of this tool is to find 8 bit wide fonts and graphics in various ROM, firmware files and export to binary or C source file. Tool can edit … Continue reading →

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Permanent link to Atari 1088XEL SMD

Posted on April 25, 2021 by Administrator

Permanent page for Atari 1088XEL SMD project.

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TI-99/4A printing new key

Posted on February 28, 2021 by Administrator

Modern 3D printers allow us to print at tremendous quality and resolution. And some Chinese ones are quite cheap. My one of Texas Instruments TI-99/4A computers has a problem- due to a bad package and careless shipping it lost three … Continue reading →

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TI-99/4A

Posted on February 21, 2021 by Administrator

Whenever I talk about designers of the ZX Spectrum computer I use to say that they were smoking weed. Now I acquired one computer from another family of computers, TI99, I can tell that Texas Instruments designers not only smoked … Continue reading →

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ZX interface 1 and Microdrive

Posted on February 21, 2021 by Administrator

I collected several ZX Spectrum series computers, but I don’t have any fancy peripherals. After several attempts I managed to buy ZX Spectrum Microdrive and interface 1 for it. As always with ancient hardware it is working a bit, but … Continue reading →

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PS2 keyboard for ZX Spectrum (or clone)

Posted on December 26, 2020 by Administrator

ZX Spectrum and other computers of that period use proprietary keyboards with direct connection to some specific chip or connected directly to computer bus. Old keyboards are damaged from elementals or time, and sometimes are not very user friendly compared … Continue reading →

Posted in FPGA, MCU | Leave a comment