Toyota recently ran an ad campaign touting “Ideas for Good” in which the actors speculated uses for Toyota Synergy Drive hybrid systems in non-automotive related applications. One idea that was floated involved using the car’s regenerative braking system at an amusement park, in an effort to reclaim and use some of a roller coaster’s kinetic energy.
Toyota sent a Prius to the team over at Deeplocal, who deconstructed it and found that the car could generate 60 amps of current when braking. That’s not an insignificant number, so they decided to create a cool demonstration showing how powerful the technology is. They built a coaster car from the Prius’ guts, and positioned it at the top of an elevated platform, which was connected to a 70 foot track. In the video embedded below they push the car from the platform and down the track, using the regenerative braking system to illuminate a large display of amusement park lights.
While the video is little more than a well-produced advertisement for Toyota, we can’t help but think that it’s pretty cool. It’s doubtful that we will suddenly see an inrush of hybrid-based roller coasters any time soon, but the concept is interesting nonetheless.
Continue reading “Hybrid roller coaster concept”
So you fancy yourself as an amateur engineer? Been working on those welding skills for a while? The real test is to trust your children’s lives on a roller coaster you’ve designed and built (translated).
Now we’re not talking some tired old carnival ride like the teacups. This is a full-blown roller coaster, complete with an upside-down loop. The ride starts off with a chain-lift to the top of the garage/barn roof. From there it’s off and away on the single-rider train. We’d recommend keeping your hands and feet inside the car… if there was a car. The ride utilizes an automobile seat, but you’ll have to settle for a lap-belt as there’s no shoulder restraint here. We’re a bit wary of the track footings – we’d bet they’re not well anchored in the ground – but the fact that the entire length of track has been painted makes us think that [John Ivers] might have known at least a little bit about what he was doing. Don’t forget to catch the video below the fold.
Update: Much better video now embedded after the break thanks to [Tom 101’s] link in the comments.
Update: Source link changes to the original thanks to [Mike’s] comment.
Continue reading “Entrust you kid’s life to a homemade roller coaster?”
These days, HTPCs are becoming more and more common, however controlling the content elegantly can be a painfully annoying problem. Roteno Labs have come up with a wonderful solution they call the RFiDJ. Similar to the RFID phone we covered earlier, they used a set of picture frame coasters and mounted descriptive pictures as well as unique RFID tags in each one. When a coaster is placed in the sensor area the server begins streaming that particular selection, including local news, This Week in Tech podcast, and other specific albums. Roteno Labs even managed to include a “shuffle” tag which would play content randomly out of a library. The end result is very well put together, excellently documented, and there is even a working video after the break.
Continue reading “Coaster Controlled HTPC”
Is your ham radio rig made of iron and steel? Is it mechanically driven? Classified as a World Heritage Site? We didn’t think so. But if you’d like to tune in one that is, or if you’re just a ham radio geek in need of a bizarre challenge, don’t miss Alexanderson Day 2015 tomorrow, Sunday, June 28th
The Alexanderson Transmitter design dates back to around 1910, before any of the newfangled tube technology had been invented. Weighing in at around 50 tons, the monster powering the Varberg Radio Station is essentially a high-speed alternator — a generator that puts out 17.2 kHz instead of the 50-60 Hz that the electric companies give us today.
Most of the challenge in receiving the Alexanderson transmitter broadcasts are due to this very low broadcast frequency; your antenna is not long enough. If you’re in Europe, it’s a lot easier because the station, SAQ, is located in Sweden. But given that the original purpose of these behemoths was transcontinental Morse code transmission, it only seems sporting to try to pick it up in the USA. East Coasters are well situated to give it a shot.
And of course, there’s an app for that. The original SAQrx VLF Receiver and the extended version both use your computer’s sound card and FFTs to extract the probably weak signal from the noise.
We scouted around the net for an antenna design and didn’t come up with anything more concrete than “few hundred turns of wire in a coil” plugged into the mic input. If anyone has an optimized antenna design for this frequency, post up in the comments?
Thanks [Martin] for the tip!
You know we’re running this gigantic contest to build hardware and send someone to space, right? We’re doing community voting right now. If you’re on Hackaday.io, head over there and pick the best project. We’re giving away t-shirts and $1000 gift cards to people who vote. The drawing for this round is next Friday.
MicroPython is a pretty interesting development in the area of interpreted languages running on microcontrollers. It’s Python, the BASIC of the modern era, and now it’s being funded by the ESA. Great news, there’s going to be a port to SPARC, and it looks like MicroPython is going to be in a few satellites.
[EloquentlyMawkishBunny]’s calculator stopped working on the morning of his AP Physics test. It was the ribbon cable for the display. What did he do? He grabbed some magnet wire and made it work. If I’m reading this right, he did this the day of his AP test. Wow.
[Will] has made a name for himself by building roller coasters in his backyard. He’s also worked on the ProtoPalette, and now he’s building a hackerspace in Concord, California.
[Josh] needed to drill some very large holes with his mill. He decided a hole saw was the easiest way to do this, but his hole saw has a hex shank. He ended up chopping the shank of a hole saw extension, basically turning it into a hex to round adapter.
Did you know the Arduino IDE on Raspbian is stuck at version 1.0.5? The newest version is 1.6.4, and there’s useful stuff like autosave in the IDE now. Amazing. [CRImier] got the latest Arduino IDE working on the Raspberry Pi 2. Yes, there’s an issue up but if for some reason you’re programming Arduinos on the Pi, you should probably do this yourself.
Oooohhhh, case modding. The Intel NUC is a pretty interesting platform for case modding; it’s small, and I shouldn’t have to remind anyone of all the cool case mods that were created when the Mini-ITX format gained popularity in the early ‘aughts. [Femke] got herself an Intel NUC, made a case, and the results are amazing. How’d she get that metal bowl? Metal spinning. Very cool.
The cheapest PCBs – and therefore most common – are green solder mask with white silkscreen. It works, but it’s also incredibly boring. This is the way things were done up until a few years ago with the explosion of board houses trying to compete for your Yuan, and now getting a red, yellow, black, blue, green, and even OSH purple is possible. This doesn’t mean multiple solder masks aren’t possible, as [Saar] demonstrates with his demonstration of multicolor solder masks and circuit love.
We’ve seen a lot of [Saar]’s designs, including a mixing desk, a cordwood puzzle, and an engineer’s emergency business card, but so far his artistic pieces have been decidedly monochromatic. For this build, [Saar] teamed up with Eurocircuits to create a board that exploits their capabilities.
Althought Eurocircuits has PCB PIXture, a tool for putting graphics on PCBs, [Saar] made this with his own tool, PCBmodE. The design of both the red and yellow variants are abstract, and only meant to be a demonstration of what can be done with multicolor solder mask. It looks great with five backlit LEDs, and with an acrylic top and bottom, makes a great coaster or art piece.
We like [Saar’s] work so much that we put his Cordwood puzzle in the Hackaday Store.
Virtual reality has come a long way but some senses are still neglected. Until Smell-O-Vision happens, the next step might be feeling the wind in your hair. Perhaps dad racing a sportbike or kids giggling on a rollercoaster. Not as hard to build as you might think, you probably have the parts already.
Off-the-shelf devices serve up the seeing and hearing part of your imaginary environment, but they stop there. [Jared] wanted to take the immersion farther by being able to feel the speed, which meant building his own high power wind generator and tying it into the VR system. The failed crowdfunding effort of the “Petal” meant that something new would have to be constructed. Obviously, to move air without actually going on a rollercoaster requires a motor controller and some fans. Powerful fans.
A proponent of going big or going home, [Jared] picked up a pair of fans and modified them so heavily that they will launch themselves off of the table if not anchored down. Who overdrives fans so hard they need custom heatsinks for the motors? He does. He admits he went overboard and sensibly way overbudget for most people but he built it for himself and does not care.
Continue reading ““Superfan” Gaming Peripheral Lets You Feel Your Speed”