Category Archives: Tools

Mini Museum: Cisco 2500 Router

Posted on 2026-01-15 by M. Eric Carr

Cisco routers, particularly the Cisco 2500, helped make the Internet what it is today. Continue reading →

Posted in Digital, Internet, Networking, Nostalgia, System Administration, Tools | Leave a comment

Bus Prognosticator

Posted on 2025-11-30 by M. Eric Carr

A Bus Prognosticator, to show estimated time until the next inbound SEPTA bus. Continue reading →

Posted in 3D Printing, Arduino, C, Networking, Projects, Tools | Leave a comment

Flip Flash

Posted on 2025-10-25 by M. Eric Carr

Flip Flash technology was innovative — but like everything about vintage photography, it was expensive. Continue reading →

Posted in Nostalgia, Tools | Leave a comment

Mini Museum: Abacus

Posted on 2025-02-28 by M. Eric Carr

The abacus was one of the first computational devices invented. Here’s its history. Continue reading →

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