Home / Experiments (page 2)


Improved Thermal Imaging

After the initial post about my thermal imaging system using the Dexter Industries Thermal Infrared Sensor, I made some improvements with both the speed and accuracy of the whole thing. I made the sensor sampling interval time based, rather than encoder value based.  This proved to be a lot better at getting consistent sampling rates.  I also doubled the horizontal ... Read More »

Disco Inferno

Sometimes an idea comes into existence and you wonder why the heck nobody else came up with it. My good friend Laurens Valk was working on a robot for one of his classes and asked me if there was a way to PWM the pins on the sensor port, dig0 and dig1. He needed to control a non-NXT motor without ... Read More »

I’d Rather Be Streaming Robots

The NXT webserver has been up for a few days now and it’s really cool to see so many people logging into it to make the motor move.  When I created it, I had no idea that it was going to be used as much as it has been.  I’ve had almost 1200 views on the UStream channel and blog ... Read More »

Want to Play with my NXT?

I am currently streaming a live feed of my NXT on UStream.  You can easily control the motor on my NXT using URLs like: http://xammy.demon.nl:81/MOTA=0 – stop the motor http://xammy.demon.nl:81/MOTA=100 – run the motor at 100% clockwise http://xammy.demon.nl:81/MOTA=-50 – run the motor at 50% counter-clockwise. The power to the motor can range from –100 to 100, with 0 being “brake”. ... Read More »

Controlling your NXT with the Kinect

After seeing the video posted on Mauro Brunato’s website, I got all sorts of ideas in my head for other cool things to do with it. With a little help from my friend SC, I managed to get my hands on one of these Kinect sensors as well. It wasn’t easy to get it working, though but with the help ... Read More »

VEX Cortex I2C NXT Cable HOWTO

As promised,here’s an easy to follow HOWTO for making your own VEX Cortex to NXT converter cable for I2C sensors. Please keep in mind a few things: Do this at your own risk This won’t work with sensors that require 9V to operate This won’t work with analogue sensors Do this at your own risk You will need the following: ... Read More »

Communicating with the NXTBee

So I’ve had these Dexter Industries NXTBees for about two weeks now and I’ve been working hard to come up with something cool.  Even before I received these NXTBees I spoke with John from DI about sending telemetry data from one NXT to another over a distance using these sensors. One of the potentially biggest data volume generating sensors I ... Read More »

Taking the Omniwheel for a Spin

Literally. The omniwheel is capable of going in any direction you want, it can also rotate on the spot.  So I thought, why not combine the two and make it rotate and move?  After picking Brian Davis’ sizable brain about using a gyro as a means to calculate a heading, I tweaked my old program and came up with this. ... Read More »

Using the NXTCam in Poor Light

If you’re like me and are the proud owner of a small room, also known as the Lego Lair, you may find that the lighting conditions in said room sometimes leave a lot to be desired.  You may not really notice this until you start using a sensor that uses light to do its thing. Take the NXTCam for example.  ... Read More »

Timing is everything!

Programming the NXT is nice.  However, sometimes you run into limits that you think shouldn’t be there.  This morning I hit one of those and scratched my head: “How to fix this?”.  Normally there are 4 timers at your disposal in ROBOTC (this also goes for NXC, as far as I am aware of).  I am not sure why we ... Read More »