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Maximite Computer Kit

Our local Jaycar stockist Allan’s Electronics/ Vidcam closed down last week and were selling off some old stock cheap. I saw a kit called Maximite Computer Kit for $20 and purchased it.

The kit with all the components placed but not yet soldered

Self contained high performance micro computer with a 32 bit CPU and 128K RAM.
Full featured BASIC interpreter and operating system. Instant on, ready for you to type in and test your programs.
VGA output. 480×432 pixels. Monochrome
Monochrome Composite Video output (selectable PAL or NTSC)
Standard PS2 style keyboard input.
Synthesised music and sound effects (using the MOD format). MONO
20 external I/O lines on the back panel.
SD card for storing programs and files (up to 32GB).
USB for connecting to a personal computer (Windows, Mac or Linux) as a terminal or for file transfer.
Extensive communications protocols including Serial (RS232 and RS485 with transceivers), I2C, SPI, CAN and 1-wire.
PWM analog output. SINGLE
Graphics includes selectable fonts, user designed fonts, drawing lines, circles, squares and control over any pixel with any colour.
Special commands for animated games.
Firmware upgrades via USB.
Powered from USB, 9V plug pack (wall wart) or battery.

Description of parts

The maker of this kit can be found here https://geoffg.net/MonoMaximite.html

http://archive.siliconchip.com.au/cms/A_112362/article.html

http://archive.siliconchip.com.au/cms/A_112413/article.html

Fully soldered kit
Assembled into its supplied box
Displayed text from VGA output

I’ll have to start reading the manual to navigate it and brush up on my BASIC but I am sure I’ll find a use for it. It took me a while to find a PS2 keyboard in my shed. The internal 7805 regulator was running a bit hot so I may replace it with a DC/DC step down regulator. After reading the instructions for the unit it is recommended to only have a 9v supply not 12v so that could be part of the heat problem…..

Switching step down converters installed.

The 3.3v reg had to be wired in as it was not pin comparable with previous linear regulator

Graphing functionality
Space invaders
Maxman
Schematic

By David Dobson

I try not to let my age dictate how old I act