XMPP Beyond Chat (Presentation by Arc Riley)

HacDC is developing an XMPP stack to coordinate networked messages to and from microcontrollers over WiFi, serial, and radio. It will ideally enable a near plug-and-play way for people to network their microcontroller projects and display them at HacDC. XMPP is “an open, XML-based protocol originally aimed at near-real-time, extensible instant messaging (IM) and presence information (e.g., buddy lists), but now expanded into the broader realm of message-oriented middleware.” It serves as the backbone of Google Talk, for example. One of the first projects to be linked to our framework will be an ambient lighting system for the space.

On Thursday, August 12 at 7:00PM, as a part of the NARG meeting, Arc Riley will present on the some of the XMPP aspects of this endeavor and will discuss PubSub, Data Forms, and Ad-Hoc Commands. Any individuals interested in these interesting aspects of XMPP beyond chat are encouraged to attend, and, like all HacDC activities, the event is free and open to the public.

At the end of the presentation, we may do some code sprinting and ensure that those attending have access to the distributed code repository.

Radio: An Introduction

Tuesday after the regular membership meeting, HacDC’s own Nate B will take the podium and present an unstructured introduction to all things wireless. This talk is intended for radio newbies, and non-members are welcome!

Whether you’re curious about wifi antenna building, or just not clear on the difference between AM and FM, bring your questions and don’t be shy! Gain a more complete understanding of how your cellphone and GPS work. Learn about signal and noise, gain and loss, and the factors that make or break a radio system.

If you’ve ever considered becoming an amateur radio operator (ham), this talk should teach you everything you need to know to pass the Technician (entry-level) license exam. Take a few practice tests right now, and write down the stuff you’d like clarification on.

If you’re planning to participate in the Columbia Heights wireless project, but have never deployed an RF link before, please try to attend.

The membership meeting will end promptly at 8:30pm, so the radio hubbub can commence.¬†Location:¬†1525 Newton Ave NW, in the St. Stephen’s sanctuary.