Bun's Lab – Telegram
Bun's Lab
147 subscribers
1.81K photos
102 videos
63 files
49 links
Electronics projects, vintæg computing, programming and repairs. A minimalist blog of sorts.
@BunsGarden @BunsNook
Download Telegram
This media is not supported in your browser
VIEW IN TELEGRAM
Love how shitty my BK Precision function generators are
Precision equipment
Checking in on my K6 Voodoo 3 system. It developed an issue where it would reset after finishing the boot procedure and trying to load the desktop. Turns out it was the soundcard.
Swapping it for my new Terratec EWS64XL
A fresh install on the bench PC. Went for a bit more of a ... classic theme
1. CR2032 is too thicc to fit into the cartridge shell, if you have any sort of soldering blobs on both sides. Use CR2025
2. Soldering onto batteries is doable. Roughen up the surface, use flux, be quick.
Tied them down with tape.
I reverse engineered the PC interface module for the Kosmos Hitec electronics set from the early 90s. The set is built around this PC interface, as well as an extensive software library of small Windows 3.x programs.
The cornerstone is the ADC0838 8 multiplexed channel 8 bit ADC with serial I/O.
The parallel port is used for communication with the PC. Everything is electrically isolated using 3 dual optocouplers, the CNY74-2, aka ILD 74.
The module features two control lines
As well as four input channels for the ADC
An LM324 quad op amp is used to map -10V ... +10V to the 0..5V range of the ADC. The topography is that of a weighted sum inverted adder.