lejos

Time-lapse video using EV3 and webcam

Time-lapse video using EV3 and webcam

I wanted to try making a home surveillance project using my webcam and EV3 sending images into Dropbox. But how to put the obvious time and date stamp on the images? It turns out this is really easy to do using the Graphics2D Java class! A short tutorial on how to do this…

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leJOS 0.5.0-alpha for EV3 on Mac OS

These are my project notes from getting the 0.5.0-alpha release of leJOS working to develop Java programs for the EV3 in Eclipse on my Mac. After following these steps you will have a working Eclipse development environment that can send programs to the EV3 over wifi or Bluetooth. If you are using another release then(…)

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Wifi Sensors for the NXT

Wifi Sensors for the NXT

The market for Wifi drivers for the NXT is exploding – and not a moment too soon I say! Previously the only way to get your NXT to talk to the big bad Internet was to create a homebrew adapter to a wifi sensor; not a project for the faint-of-heart. But now there are three(…)

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leJOS driver for the Dexter dGPS sensor

leJOS driver for the Dexter dGPS sensor

The Dexter Industries dGPS device provides the NXT with access to a real-time GPS sensor. The dGPS is a very useful device is you plan to do any mobile robotics that involve navigation and path-planning. Not only can it tell your robot where it is, but it will also give the direction of travel, speed(…)

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