I built my own 5200 controller: Purpose There’s several different options you can use for an Atari 5200 controller: The stock controller. It’s non-concentering joystick, mushy fire buttons, and general reliability issues make it kinda suck. The masterplay clone. There are various adapters for using digital joysticks, like the common Atari 2600 stick, on the …
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Scott’s Z80SBC: Z80 Single Board Computer
I always wanted to build a single board “trainer style” computer: Motivation When I was first getting started with electronics, wanted a Heathkit ET-3400 Microproccessor trainer, but could never afford one at the time. Eventually both I and the world moved on, to fancier more capable computers. However, I’ve still always wished I had an …
Read MorePi-Powered Atari 5200 Multi-ROM Cartridge (MultiCart)
Tired of buying cartridges for my 5200, I decided to make myself a Multi-ROM Cartridge: Purpose The Atari 5200 is a vintage gaming system from the early 1980s. At the time I owned a 2600, but I always wanted a 5200. Well, in 2018 I finally decided to find one on eBay and buy it. …
Read MoreRaspberry Pi Virtual Floppy for ISA (PC XT/AT) Computers
In this post, I turn a raspberry pi into a virtual storage device for ISA bus computers: Motivation I’m tired of carrying compact flash cards and/or floppies back and forth to my XT computer. I like to do development at my desk using my modern windows PC. While I can certainly use a KVM switch …
Read MoreConverting a Seeburg 3WA Wallbox into a Remote for a Modern Music Player
A couple of videos where I take a ~ 1950s Seeburg 3WA wallbox and convert it into a media player for my homebuilt audio player: Motivation I saw a blog post where someone else converted a Seeburg wallbox, and it set me on my own journey. A bit of background. These Wallboxes were used as …
Read More8-bit ISA DiskOnChip / RTC board
In this post, I create an ISA card that can serve as either a DiskOnChip board, or a RTC, or both: Background DiskOnChip is a series of products manufactured by m-systems in the 90s and 2000s. There are several versions available, from standard 32-pin DIP IC packages, to IDE interface versions. This post is going …
Read MoreMeasuring USB Power Cable Voltage Drop with my DC Load
In this video, I measure the voltage drop on USB Power Cables using a Power Supply, DC Load, and Multimeter: Motivation When I did my Seeed Studio Fusion PCB Review, I ordered a new board for my Raspberry Pi Midi Jukebox, that featured a 3.5×1.35 barrel jack for power. I like barrel jacks instead of …
Read MoreLeia’s LED Clock
In this post, I design and build a LED clock for my daughter: Motivation I had been using a Nixie Tube clock in the baby’s room. As the baby grew older, she not only became mobile, but has also picked up a new hobby, smashing things. As such, the nixie clock had to be replaced …
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