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gkaufman

If you can solder it, I'll play

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This user joined on 09/28/2018.

My Projects

Geoff Graham released an inexpensive video terminal design in 2014. Several others have updated the firmware. Here is an updated PC board.

ASCII Video Terminal

Projects I Like & Follow

Hackaday Prize 2019

Homemade 8MHz Z80 SBC, 128kB banked RAM, RTC, SD (HD emulation), Basic and Forth interpreters, CP/M 2.2 and 3, cross Assembler and C (SDCC)

Z80-MBC2: a 4 ICs homebrew Z80 computer

An easy to build homemade single board computer with a V20HL aka uPD70108H (8088 + 8080) or 80C88 CPU. CP/M-80 and CP/M-86 supported.

V20-MBC: a V20 (8088 + 8080) CPU homebrew computer

This is a Walking ATAT using 8 Servos. Great robotics project!

Motorized Walking ATAT using Servos and Arduino

A VT100-like terminal for the Z80-MBC2

uTerm

You can never have too many clocks based on obsolete display technologies ...

Tiny IV-21 VFD Clock

sjm4306 sjm4306

An Arduino-based graphical “flip clock”. Bonus faces because there’s room. Really minimal enclosure.

FlipClock

Hackaday Prize 2020

Test any electronic component with this pocket component tester

Component Tester in a Keychain

Fast, small, available. Pick any three.

CP/M 50 Mk II

A little something to check your digital multimeter accuracy occasionally.

Precision Voltage and Current Reference

A version of the classic arcade game Asteroids using a laser projector running on the ESP32.

Laser Projected Asteroids on the ESP32

Chris G Chris G

Some months ago I found a "forgotten" Z8 BASIC/DEBUG (Z8671 aka Z0867108) MCU, so I decided to give it a new "home" (a board...)

RC-Z8BASIC: a Z8 BASIC/DEBUG homebrew computer

FFT spectrum analyzer is an test equipment that uses Fourier analysis and digital signal processing techniques to provide spectrum analysis.

DIY FFT Audio Spectrum Analyzer

mircemk mircemk

An easy to build homebrew single board computer with a 68008 CPU. Two HW options: Lite and Full. Lite allows to build a 3 ICs 68008 system.

68k-MBC: a 3 ICs 68008 homebrew computer

A RS232 adapter for the Z80-MBC2

uCom

ASCII terminal supporting VGA 640x480 with 256 colors and USB keyboard

Color ASCII Terminal

A replica of the OSI 300 from Ohio Scientific: a 6502 trainer from 1977 with 128 bytes of RAM and binary switch programming

OSI 300 Replica

A VT100-like RS232 terminal

uTerm-S

Hackaday Prize 2020

The successor of Scrumpel 7c on one Eurocard PCB

Scrumpel 7d Z8S180 SBC

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