Blog

Geekfest is a weekly event hosted by Groupon’s engineering team. Every Tuesday at lunchtime, the company invites members of the tech community to present topics that are interesting to a technical audience. I wish to express my thanks to Groupon...

Members of the University of the West Indies (UWI) Computer Science Club and LinuxBarbados just finished a joint session this afternoon. I am grateful that the group invited me to present. Outline (prepared in advance): 30 minutes: Overview of Ruby,...

The New York City Node JS Meetup asked me to speak about OpenROV Wednesday evening. About eighty developers came out for the meeting. Their meetings are especially cool because they’re held at the Empire State Building, probably the best known...

RubyCaribe (pronounced ka-REEB) is a conference for intermediate and advanced software developers who use Ruby. The conference will be held January 27 - 31, 2015 in Barbados. January is a beautiful time to visit the Caribbean, especially if you’re coming...

Note: This article has been updated with more photos and details describing slip ring installation. Youthful exuberance drove me to pilot my OpenROV before I built a good tether management system. Bad idea! It’s better to have a tether management...

This article describes a simple hardware hack: Making the Parallella run on solar energy. Motivation: The fastest computers in the world gulp electricity at an alarming rate. For example, Tianhe-2 at the National Super Computer Center in Guangzhou, China uses...