14 Oct 2023: A 13.8V, 7A switch-mode power supply with over-voltage protection.
28 July 2022: Added three new BASIC example programs to my VGA video card interface for the TRS-80 project page.
10 April 2021: 8-bit VGA video cards.
09 Jan 2020: Documentation for my TRS-80 model 1 clone is complete.
15 Sept 2019: Finally made a page for my discrete transistor Video Pong project.
6 Dec 2018: Commodore PET-2001 clone.
20 Jan 2017: Telefunken's bouncing ball in a box: an analog simulation.
26 September 2016 - project page for "A simple audio oscilloscope" uploaded. Link provided on home page under "Test and measurement projects".
21 October 2015 - preliminary project page for "A NAND gate-only frequency counter" uploaded. Link provided on home page under new title: "Test and measurement projects".
21 October 2015 - This progress log created.