Uber-Cheap FPV Snow Sled

Has the winter blues got you RC vehicle guys down? Well, cheer up! Spring is just around the corner. In the meantime though, you can take a page out of [BenNBuilds’] book and build an FPV Snow Sled.

So how is using this Snow Sled in the winter different from any other RC vehicle? [BenNBuilds] controls it from inside his house where he stays warm and toasty. The on-board FPV camera sends video back to a receiver in the house where it can be either displayed on an LCD screen or on FPV goggles. Plus, being able to see the sled from the window doesn’t hurt either when getting in a sticky situation!

The craft it self was made on the cheap from spare parts that were kicking around. The frame is made from foam board and is powered by a ducted electric fan. A rudder similar to that of a hovercraft or swamp boat provides the steering. Since [BenNBuilds’] transmitter had a couple extra channels, he hooked up a pan and tilt system for his FPV camera. Check out the video of this puppy in action after the break….

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DIY RC Hovercraft Makes Batman Action Figure Envious

[Bauwser] had some spare RC Helicopter parts laying around and cobbled together an RC Hovercraft. It worked but not to his liking. That’s okay though, he know it was just a prototype for what was to come; a fully scratch built hovercraft with parts spec’ed out specifically to make it handle the way [Bauwser] wanted.

He started out by sketching out some cool faceted shapes that would both look good and be easy to construct. Sheets of a light but rigid foam were then cut into the appropriate shapes and glued together to create a three-dimensional body. The foam was then covered with a layer of fiberglass and resin to add some strength. A hole was cut in the body to mount a 55mm ducted fan which provides the required air to fill the skirt and lift the vehicle. Another ducted fan is mounted at the back of the craft and points rearward. This ducted fan provides the forward thrust and a servo vectors this fan in order to make turns.

[Bauwser] sewed the skirt himself. It is made out of an old beach tent. The fabric is extremly light and flexible, perfect for a hovercraft. During the test runs, dirt and debris was getting trapped in the skirt tube. A quick trip back to the sewing machine to add some gauze netting fixed that problem and keeps debris collection to a minimum. In the end, [Bauwser] shows what a great DIY RC build can look like with a little planning and experimentation.

Need more DIY RC hovercrafts? Check this out

Video after the break…

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PropVario, a Talking Variometer/Altimeter for RC Sailplanes

propvario

Lift. For a sailplane pilot it means the difference between a nice relaxing flight, or searching for an open area to land. Finding lift isn’t always easy though. This is especially true when the sailplane is hundreds of meters above a pilot whose feet are planted firmly on the ground. That’s why [Tharkun] created PropVario. PropVario is a combination variometer and altimeter for Radio Controlled sailplanes. We’ve seen a few variometers in the past, most often for full-scale sailplane or hang glider pilots. Almost every full-scale plane has a variometer as part of its suite of gauges – usually called a rate of climb or vertical speed indicator.

R/C pilots don’t have the luxury of looking at a gauge while flying though. At altitude even large 2 meter gliders can appear to the naked eye as no more than a dot. It would be somewhat embarrassing to lose sight of your glider because you were checking gauges. The solution is actually simple. A varying audio tone indicates the rate of climb of the plane. Higher pitched tones mean the plane is going up. Lower pitched tones mean the plane is descending. This system, coupled with a simple radio transmitter, has been in use by R/C sailplane pilots for years.

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Hacking a radio controlled spy device for overly attached girlfriend.

This is the first in our series of videos meant to spread the hacking goodness far and wide on the net. As you can see, it is a pretty silly video, hopefully you enjoyed the humor.  This wouldn’t be hackaday without an appropriate writeup though!

Initially the idea was to make this as a device that my boss could deploy from his Tesla Model S. Ultimately, we missed the release of SkyFall, so the whole 007 theme seemed a little flat. However, we did just happen to have a wonderful woman in the office that agreed to be an “overly attached girlfriend”. Here’s a link to the meme for those who are unfamiliar. Even though we made her look like a crazy person, she was a great sport about it (Thanks [Stephanie]!).

The Goal was to have a radio controlled device that would send live video and audio to someone and had the ability to plant a small GPS tracker on the undercarriage of a car.

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Building your own eye in the sky

His goal of one post a week for a year has past, but [Dino] keeps bringing his skills to bear on new projects. This time around he’s adding a wireless camera to an RC helicopter.

These radio controlled fliers (there are cheap ones that use IR control which is much less reliable) can be found for around $30-60. [Dino] already had a wireless camera to use, but adding it and a 9V battery is just too much weight to lift. After some testing he established that 2oz of payload is the upper limit. He began removing parts from the helicopter to achieve enough savings to lift both the camera and its battery. Along the way he discovered that removing the weights from the fly bar added a lot of maneuverability at the cost of a small stability loss.

Check out his project video embedded after the break. It’s not anywhere near the results of professional multi-rotor camera mounts, but it is cheap and fun!

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Universal 20 channel project controller from a Ps2 controller

So you’ve got a really cool project that requires a wireless controller and a ton of different channels. What are you going to do? Are you going to go pick up an expensive RC controller? Nah, you’re going to build your own. This project makes a generic 20 channel controller for your projects by stuffing an SMDuino and an XBee module inside a ps2 controller.  Unfortunately you lose the force feedback since you have to remove the motors to make space for the extra components and batteries. You do end up with a decently ergonomic and aesthetically pleasing controller though.

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OK, you might not be paranoid – perhaps that priority mail box IS spying on you

rc-box-bot

[Thomas Renck] recently picked up a 1000mW wireless video transmitter that he ultimately planned to mount in an RC plane. Before he strapped it on a plane to potentially kiss it goodbye for good, he wanted to play with it a while to see what it was capable of.

After a friend helped him determine the camera’s maximum range (about 1900 feet on open ground), he thought it would be fun to strap it on his nitro R/C truck. That didn’t work out so well due to some vibration issues, so he constructed a makeshift R/C car from the shipping box the camera arrived in, along with some other odds and ends.

As you can see in the video below, the propeller-driven “Boxmobile” zips along quite nicely. The video feed from the camera is pretty impressive too, allowing him to easily guide the car while it’s well out of sight.

At nearly $350, the self-proclaimed “ghetto-bot” is certainly not cheap, though we hear body repairs are a piece of cake!

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