Dr. Scott M. Baker

Electronic Projects / Kits, Unique Software, Sandrails, and BBS Door Games

  • Home
  • Blog
    • Blog post list
    • Electronics Projects Index
    • Older Electronics Projects
  • Contact
  • Games
    • Galactic Warzone
    • Land of Devastation (classic)
    • LOD Registration
    • NETLOD
    • Old source code
    • Super Galactic Warzone
    • The Cerberus Incident
  • Misc
    • Amateur Castle Builders Society
    • Early Software Projects
  • Sand Rail
    • Links
    • Manx
    • Mazda Rotary Conversion
    • Misc
    • Turbo-Megasquirt Sandrail

Author: admin

Cloning the ET-3404 6809 adapter for the Heathkit ET-3400

December 21, 2020
by admin in Electronics Projects

In this video, I make a clone of the ET-3404 6809 adapter: Purpose I’ve become somewhat of a Heathkit ET-3400 enthusiast lately, after building my ETA-3400 memory/io clone. I decided to also clone the ET-3404, which is a 6809 adapter board for the ET-3400. Why? Simply for completeness sake. The official “experiments” for the ET-3404 …

Read More

Designing a Memory/IO (ETA-3400) addon for the ET-3400 Trainer

October 3, 2020
by admin in Electronics Projects

In this video, I build a memory/IO expansion for the vintage Heathkit ET-3400 trainer: Purpose I’ve always wanted one of these Heathkit microprocessor trainers, and finally one caught my eye on eBay and I pulled the trigger. The basic interaction with the trainer is through the onboard keypad and LED displays, but Heathkit also made …

Read More

Overclocking the pi4 with the Blink Blink ICE Tower CPU Cooling Fan

September 15, 2020
by admin in Electronics Projects

In this video, I evaluate a tower heatsink and combo provided to be my Seeed Studio: Background I’ve already done a blog post on Raspberry Pi4 cooling where I tried a Raspberry Pi 4, both with and without a fan. I investigated whether you really needed a fan (my conclusion generally being “it depends”) and …

Read More

Supercapacitor Uninterruptable Power Supply (UPS) for Raspberry Pi

September 7, 2020
by admin in Electronics Projects

In this post, I build a couple supercapacitor UPS boards for my raspberry pi projects. Motivation For my Convergent restoration, I decided to build an RASCSI to replace some failing SCSI hard drives. The RASCSI is a SCSI emulator built using a raspberry pi. Problem with these types of emulators is that if you carelessly …

Read More

The Hayes Chronograph, a Remake for 2020

July 12, 2020
by admin in Electronics Projects

I couldn’t find myself a Hayes Chronograph, so in this video I just went off and built one… Purpose I always wanted a Hayes Chronograph, but I seem to miss the opportunity to acquire one, every time the opportunity presents itself. So I decided that in 2020 I would just have one … or else. …

Read More

Convergent Technologies CTOS/BTOS hints, tips, and notes

June 14, 2020
by admin in Vintage Computing

I’ve been playing with some old CTOS-based Convergent NGEN (Burroughs B25, B26, etc) workstations lately. Documentation on these is a little bit sparse, so I decided to keep a log of my notes. This blog post is going to concentrate on running the CTOS operating system on actual period-accurate hardware — not on a virtual …

Read More

Tandy 1000 Upgrades / PS2-Tandy Keyboard Adapter

May 17, 2020
by admin in Electronics Projects

In this video, I spiff up a Tandy 1000 that I bought on ebay: Purpose: A Tandy 1000 was the second computer that I owned, the first was a Tandy CoCo. Note that I keep a slightly different mental “computers that I owned” list and “computers that I used list”. There are a few computer …

Read More

Restoring a Convergent Technologies NGEN PC/Workstation (Burroughs B25 / Unisys)

March 12, 2020
by admin in Electronics Projects

In this set of videos, I work on getting a used Convergent Technologies NGEN computer up and working: In the second video, I figure out the pinout for the 25-pin connector, and I get the keyboard working and the video displayed on an MCE2VGA. In the third video of the series, I design and build …

Read More

Posts navigation

Page 1 Page 2 … Page 19 Next

Categories

Newer Posts in Electronics Projects

  • Cloning the ET-3404 6809 adapter for the Heathkit ET-3400
  • Designing a Memory/IO (ETA-3400) addon for the ET-3400 Trainer
  • Overclocking the pi4 with the Blink Blink ICE Tower CPU Cooling Fan
  • Supercapacitor Uninterruptable Power Supply (UPS) for Raspberry Pi
  • The Hayes Chronograph, a Remake for 2020
  • Tandy 1000 Upgrades / PS2-Tandy Keyboard Adapter

Older Posts in Electronics Projects

  • Raspberry Pi Controlled DC Load
  • Hot Shoe to 1/4-20 Quick Release Magnetic Mount for LumeCube
  • Building a Power-over-Ethernet (PoE) Power supply using a DPS5005 module
  • Scott’s FrankenNUC: 10Gbe Fiber Network on a 5th Generation Intel NUC 5i7RYH
  • RAIN: Redundant Arrays of (In)expensive NUCs
  • DIY Wireless Temp/Humid/Pressure sensors with Raspberry Pi Receiver, for monitoring stored 3D printer Filament
  • Raspberry Pi 4: Do you need a fan? What’s the best fan for a raspberry pi 4?
  • Vacuum Fluorescent Display (VFD) on a Prusa I3 Mk3 Printer
  • The Nixie Tube Filadometer – A Nixie Tube Filament Meter for your 3D Printer
  • COB LED Panels: 10 watt, 70 watt, and 200 watt.

Recent Posts in All Categories

  • Cloning the ET-3404 6809 adapter for the Heathkit ET-3400
  • Designing a Memory/IO (ETA-3400) addon for the ET-3400 Trainer
  • Overclocking the pi4 with the Blink Blink ICE Tower CPU Cooling Fan
  • Supercapacitor Uninterruptable Power Supply (UPS) for Raspberry Pi
  • The Hayes Chronograph, a Remake for 2020
  • Convergent Technologies CTOS/BTOS hints, tips, and notes
  • Tandy 1000 Upgrades / PS2-Tandy Keyboard Adapter
  • Restoring a Convergent Technologies NGEN PC/Workstation (Burroughs B25 / Unisys)
  • Raspberry Pi Controlled DC Load
  • New 3D Printing Channel and Website
  • Hot Shoe to 1/4-20 Quick Release Magnetic Mount for LumeCube
  • Building a Power-over-Ethernet (PoE) Power supply using a DPS5005 module
  • Scott’s FrankenNUC: 10Gbe Fiber Network on a 5th Generation Intel NUC 5i7RYH
  • RAIN: Redundant Arrays of (In)expensive NUCs
  • DIY Wireless Temp/Humid/Pressure sensors with Raspberry Pi Receiver, for monitoring stored 3D printer Filament

Copyright Notice

All content on this website is copyright Scott M. Baker and may not be used or reprinted without explicit permission.

Violators will be eaten by a grue.

twitterbird - Link will open in new windowfacebook - Link will open in new windowgoogleplus - Link will open in new window

CyberChimps WordPress Themes

Theme home page (will open in a new window)
© 2021 Dr. Scott M. Baker