General

The Eye-Fi card is a memory card for cameras that wirelessly uploads photos to your home computer or to online services like Flickr. It connects automatically to a pre-selected Wi-Fi network, then interactively transfers JPEG files in real-time. The whole thing operates out of a standard-size SD memory card, a technical feat so incredible that […]

Dan Shiffman and I are continuing development on our Processing library for Digi’s XBee radios. The 1.1 library now facilitates receiving single sample I/O packets in API mode from both the Series 1 and ZNet radios (formerly known as Series 2), and returns an object that contains the analog values, digital values, sender’s address. Please

We use a lot of batteries at ITP. Most of these end their life as industrial waste in our “Techo-scrap” bin, eventually to be carted off by an NYU contractor to parts unknown where their chemicals perhaps leach into places unthinkable? Maybe, not. Hopefully they’re treated with great care, but it certainly would be far

A few interesting developments have happened over the holidays with XBee radios. The company (formerly known as Maxstream) has rebranded the radios (formerly known as the XBee Series 2). From now on you’ll be calling them the Digi XBee ZNet 2.5. The XBee ZNet 2.5 name coincides with brand new firmware. This update includes bug

People ask me all the time which battery they should use for their Arduino project, or how long an XBee will run on a specific type of battery. Rather than continue to give vague answers, I decided that it would be much more helpful to generate some real-world battery life results for Arduino projects and

Hey, bandwagons are for jumping on, so I created an ITP AlumniBlender Facebook application that dynamically displays all AlumniBlender headlines and authors. You can add it to your profile. Thinking of making your own feed app? Try reading a bit of their getting started information and check out the great tutorial on HowToForge for specific

The ITP AlumniBlender put on quite a bit of weight over the holidays as I mined databases and tracked down more of our ilk. It’s now almost tripled in size with feeds from five continents and alumni that span 17 years of the Interactive Telecommunications Program. From sneakers to scaling, and from tempers to tweetups,

Dan Shiffman and I are working on a Processing library for Digi’s XBee Series 1 radios. The library currently facilitates receiving single sample I/O packets in API mode, and returns an object that contains the analog values, digital values, sender’s 16-bit address and RSSI value. The next tasks will be to receive regular RX frames,

On the Arduino microcontroller, the millis() function counts the number of milliseconds since the program started running. Unfortunately, this count resets to zero after approximately 9 hours and 32 minutes. I have written a millisRollover() function that detects these rollovers, so that programs can respond properly to the overflow event. This can solve problems with

This week I was asked to help out with final mesh network creation and configuration for the Living City project, going on exhibit starting December 11th at the Van Alen Institute’s public gallery. The project is the brainchild of The Living’s two architects, David Benjamin and Soo-in Yang who are currently resident fellows at the