Sunday Wifi RC Car Extra

Just a heads up for the linux guys before I hit the hack. If you’re using madwifi drivers, make sure you update em. A remote exploit was released. the researcher played nice and got with the development team before releasing the details.

I’ve been pondering a wifi controlled RC car robot project. I’m thinking of an onboard motherboard and a big battery supply. After considering my own ideas, I like to poke around and check out others. It’s inspiring and I almost always find something I can use adapt or abuse. For the wifi RC car, several have been created already.

The Wi-drive is really an exercise in embedded systems and software control, but looks interesting. Sadly, it appears to suffer from the ‘our college gave us this dev box’ syndrome.

The WRT54G turned RC car is pretty sweet. The router is running a servo control daemon, providing a cheap mobile wireless dev platform.

This star climbing enabled monster truck hack looks very promising as a build platform. It was designed to be autonomous, but it could easily be adapted.

Not be forgotten, Ashish’s laser rangefinder based autonomous rc car.

If you’d rather keep the car stock, you could interface the transmitter with a pc with a simple ppm signal generator.

Then there’s the RC car telemetry project.

Got any more worthy projects? Shout out.

Coilosapien: Rail Gun On Yer Robot


It’s been a while since we’ve seen anything new on the robosapien front, but I’d say that a laser sighted rail gun for our favorite robots is worthy. From the video, it appears to have decent accuracy and a fair sized clip. It’s creator, [Marcus] says that he’ll have a tutorial up soon. Thanks to [Robert] for the tip. (Update: The tip says it’s a mini rail gun, so I’m not sure if it’s a rail gun or a coil gun.)

Self Parking Lego Mindstorms


[Korvost]
er, [Hybrid] sent along this video of a lego mindstorm self parking car. I don’t think I’d want it parking next to my ride considering how much damage it did to the blocks. Man, I need to upgrade my legos. Sadly, this video just re-iterates one of the my problems with Youtube videos. Video posters tend to fail to provide links with more information about their projects/hacks. Via [techblog]
Update: [ralphn] found the car. It uses an ultrasonic sensor to find a space big enough to park in – when it does, it automatically parks.

Don’t forget, Prizes and glory await the winner of the Design Challenge. Just 12 days left to get em in.

Just a quick bonus hack: The giant altoids tin battery pack w/voltmeter. [Via Make]

Line Following Roomba

line following roomba

[Ben Miller] came up with a really simple way to turn a Roomba into a line following robot. The Roomba already has four “cliff sensors” built into it. Ben just added a potentiometer to the two outside sensors and then tuned the pots so that the Roomba could detect black tape on the ground. It isn’t your standard line follower, but if you draw a path using two strips of tape the Roomba will gladly stay inside. Here’s a CoralCDN link to the video.

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