Speech and Sound add-on cards for the Epson QX-10 CP/M Computer.
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An IDE Adapter for the Epson QX-10 CP/M Computer
A compactflash/ide adapter for the Epson QX-10 CP/M Computer system, uses a slightly patched version of the BIOS drivers for the Comrex Comfiler hard drive.
Read MoreBattery operated ESP8266 Wifi Button to trigger my sprinkler system
Use a battery-operated ESP8266 ESP-01 module as a wifi trigger for home automation.
Read MoreA basic and RAM board for HP-9000 series computers
In this post, I build a Basic Flash and RAM board the the HP 9000 series of computers: Purpose Lately I’ve been playing with old HP computers such as the 9836, 9920, and 9000/310. These computers typically do not come with ROM basic or any other ROM operating system. Without a ROM board, you have …
Read MoreWeb Server Monitoring with Prometheus and Grafana
Prometheus exporter for apache log files, used to monitor traffic to a website using Grafana, as well as notes about using blackbox exporter and node exporter.
Read MoreAssembling a thin client to serve as an HPDrive
In this video, I put together a T5745 thin client with a PCI expansion adapter and a GPIB adapter. Background I’ve started playing with some HP 9000 computers, both the series 200 (9836, 9920, etc) and the series 300 (model 310). With a few exceptions such as the 9836, these computers often don’t include built-in …
Read MoreRaspberry Pi Floppy Controller Board
This floppy controller hat for the raspberry pi allows you to connect vintage floppy drives (360K, 720K, 1.2MB, 1.44MB, etc) to your raspberry pi model 4B.
Read MoreHP 27201A Speech Output Module, first speech synthesizer designed by a major computer manufacturer!
Teardown and reverse engineering of the HP 27201A speech output module, which uses the TMS5220 speech processor IC and was designed to be used with the HP 1000 and HP 3000 series minicomputers.
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