Dexter industries WiFi Sensor Demo by Mightor: Spin Pretzel

9 05 2011

EDIT: the live stream will be taken down on May 15th 2011.

Since the Dexter Industries WiFi sensor is coming out (soon?), Mightor is writing a RobotC driver/ library for it. And the proof of concept video is AWESOME. It features Pretzel, one of his NXTs, which(/who) you can see at this live stream. The cool part is that you can command its(/her) motor, just by going to a webpage and putting a speed into the URL! From his blog:

I am currently streaming a live feed of my NXT on UStream.  You can easily control the motor on my NXT using URLs like:

power to the motor can range from –100 to 100, with 0 being “brake”. Be nice to the poor little NXT and observe these simple guidelines:

  • Don’t try to feed it garbage, nobody will think you’re a l33t h4xor if you crash the NXT and if I track you down, I will send my NXT powered, hellfire missile armed quadrocopter to your house. It’s fully autonomic but it has some bugs, so waving a white flag may be perceived as a threat instead and it will act accordingly.
  • It may crash and it may not respond as quickly as you’d like but give it time and don’t hammer it.
  • If the light on the left is not ON then it’s not running.
  • Don’t bother leaving messages in the comments or mail telling me it has crashed. I’ll check periodically to see if it is still responding and restart it if necessary.

It’s a very small webserver programmed in ROBOTC running on the NXT. It uses the new Dexter Industries WiFi sensor for the NXT. You can download the code right here: [LINK]. You’ll need to download my driver suite too as it uses the common.h file from there.  The code is rough and mostly undocumented. Usual caveats apply. This program and driver will be part of the driver suite.

Try it!

The following image cannot be displayed: Pretzel, as seen in the live stream



One response

3 08 2013
Project Cars Demo

Wonderful blog you have here but I was curious about if you knew
of any discussion boards that cover the same topics
talked about here? I’d really love to be a part of group where I can get feed-back from other experienced individuals that share the same interest. If you have any suggestions, please let me know. Thanks a lot!

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