Despite a seeming lack of transportation projects for The Hackaday Prize, there are a few that made it through the great culling and into the semifinalist round. [Nick], [XenonJohn], and [DaveW]’s project is the Medicycle. It’s a vehicle that will turn heads for sure, but the guys have better things in mind than looking cool on the road. He thinks this two-tire unicycle will be useful in dispatching EMTs and other first responders, weaving in and out of traffic to get where they’re needed quickly.
First things first. The one-wheeled motorcycle actually works. It’s basically the same as a self-balancing scooter; the rider leans forward to go forward, leans back to break, and the two tires help with steering. It’s all electronic, powered by a 450W motor. It can dash around alleys, parking lots, and even gravel roadways.
The medi~ part of this cycle comes from a mobile triage unit tucked under the nose of the bike. There are sensors for measuring blood pressure and oxygen, heart rate, and ECG. This data is sent to the Medicycle rider via a monocular display tucked into the helmet and relayed via a 3G module to a physician offsite.
Whether the Medicycle will be useful to medics remains to be seen, but the guys have created an interesting means of transportation that is at least as cool as a jet ski. That’s impressive, and the total build cost of this bike itself is pretty low.
Video of the Medicycle in action below.
The project featured in this post is a semifinalist in The Hackaday Prize.
Continue reading “THP Semifinalist: The Medicycle”
Remember that episode of Leverage (season 5, episode 3), where Alec uses Marvin to wirelessly change all the street lights green so they can catch up to an SUV? And you scoffed and said “that’s so not real!”… well actually they got it right. A new study out of the University of Michigan (PDF warning), shows just how easy it is to make your morning commute green lights all the way.
The study points out that a large portion of traffic lights in the United States communicate with each other wirelessly over the 900Mhz and 5.8Ghz ISM band with absolutely no encryption. In order to connect to the 5.8Ghz traffic signals, you simply need the SSID (which is set to broadcast) and the proper protocol. In the study the researchers used a wireless card that is not available to the public, but they do point out that with a bit of social engineering you could probably get one. Another route is the HackRF SDR, which could be used to both sniff and transmit the required protocol. Once connected to the network you will need the default username and password, which can be found on the traffic light manufacturer’s website. To gain access to the 900Mhz networks you need all of the above and a 16-bit slave ID. This can be brute forced, and as the study shows, no ID was greater than 100. Now you have full access, not to just one traffic signal, but EVERY signal connected to the network.
Once on the network you have two options. The completely open debug port in the VxWorks OS which allows you to read-modify-write any memory register. Or by sending a(n) UDP packet where the last byte encodes the button pressed on the controller’s keypad. Using the remote keypad you can freeze the current intersection state, modify the signal timing, or change the state of any light. However the hardware Malfunction Management Unit (MMU) will still detect any illegal states (conflicting green or yellow lights), and take over with the familiar 4-way red flashing. Since a technician will have to come out and manually reset the traffic signal to recover from an illegal state, you could turn every intersection on the network into a 4-way stop.
So the next time you stop at a red light, and it seems to take forever to change, keep an eye out for the hacker who just green lit their commute.
Thanks for the tip [Matt]
This week’s Hacklet focuses on two wheeled thunder! By that we mean some of the motorcycle and scooter projects on Hackaday.io.
We’re going to ease into this Hacklet with [greg duck’s] Honda Sky Restoration. Greg is giving a neglected 15-year-old scooter some love, with hopes of bringing it back to its former glory. The scooter has a pair of stuck brakes, a hole rusted into its frame, a stuck clutch, and a deceased battery, among other issues. [Greg] already stripped the body panels off and got the rear brake freed up. There is still quite a bit of work to do, so we’re sure [Greg] will be burning the midnight 2 stroke oil to complete his scooter.
Next up is [Anders Johansson’s] jaw dropping Gas turbine Land Racing Motorcycle. [Anders] built his own gas turbine engine, as well as a motorcycle to go around it. The engine is based upon a Garrett TV94, and directly powers the rear wheel through a turboshaft and gearbox. [Anders] has already taken the bike out for a spin, and he reports it “Pulled like a train” at only half throttle. His final destination is the Bonneville salt flats, where he hops to break the 349km/h class record. If it looks a bit familiar that’s because this one did have its own feature last month.
[GearheadRed] is taking a safer approach with FireCoates, a motorcycle jacket with built-in brake and turn signal indicators. [GearheadRed] realized that EL wire or LED strip wouldn’t stand up to the kind of flexing the jacket would take. He found his solution in flexible light pipes. Lit by an LED on each end, the light pipes glow bright enough to be seen at night. [GearheadRed] doesn’t like to be tied down, so he made his jacket wireless. A pair of bluetooth radios send serial data for turn and brake signals generated by an Arduino nano on [Red’s] bike. Nice work [Red]!
[Johnny] rounds out this week’s Hacklet with his $1000 Future Tech Cafe Racer From Scratch. We’re not quite sure if [Johnny] is for real, but his project logs are entertaining enough that we’re going to give him the benefit of the doubt. Down to his last $1000, [Johnny] plans to turn his old Honda xr650 into a modern cafe racer. The new bike will have electric start, an obsolete Motorola Android phone as its dashboard, and a 700cc hi-comp Single cylinder engine at its heart. [Johnny] was last seen wandering the streets of his city looking for a welder, so if you see him, tell him we need an update on the bike!
That’s it for this week. If you liked this installment check out the archives. We’ll see you next week on The Hacklet – bringing you the Best of Hackaday.io!
[Kristian] just put the finishing touches on his full size Segway built from scratch.
Back in 2012, he made a small balancing robot using a gyroscopic sensor and a PID controller — you can see the original post here. The cool thing is, he’s basically just scaled up his original project to create this full-size Segway!
It uses two 500W 24V DC motors (MY1929Z2) on an aluminum check plate frame, with the rest of the structure made from steel plumbing and fittings. What we really like is the steering linkage; similar to a real Segway, you pull the handle in the direction you want to turn. He’s accomplished this by putting another length of pipe parallel to the wheels which is connected by an elbow fitting to the handle bar. It’s supported by two pillow block bearings, and in the back is a fixed potentiometer — when you lean the handle bars one way, the pipe rotates, spinning the potentiometer. To make it return to neutral, he’s added springs on either side.
There’s an impressive build log to go along with it, and a great demonstration video after the break.
Continue reading “Impressive Homemade Segway Is The Real Deal”
If the world comes to an end, it’s good to be prepared. And let’s say that the apocalypse is triggered by a series of nuclear explosions. If that is the case, then having a Geiger counter is a must, plus having a nice transport vehicle would be helpful too. So [Kristian] combined the two ideas and created his own Geiger counter for automotive use just on the off chance that he might need it one day.
It all started with a homemade counter that was fashioned together. Then a display module with a built-in graphics controller that was implemented to show all kinds of information in the vehicle. This was done using a couple of optocouplers as inputs. In addition, a CAN bus interface was put in place. As an earlier post suggests, the display circuit was based on a Microchip 18F4680 microcontroller. After that, things kind of got a little out of control and the counter evolved into more of a mobile communications center; mostly just because [Kristian] wanted to learn how those systems worked. Sounds like a fun learning experience! Later the CPU and gauge was redesigned to use low-quiescent regulators. A filtering board was also made that could kill transients and noise if needed.
The full project can be seen on [Kristian]’s blog.
Who uses keys these days, really? Introducing the world’s first(?) biometric secured golf cart. Gives “push to start” a whole new meaning!
[Ramicaza] lives in a small community where many families (including his!) use golf carts to commute short distances, like to the grocery store, or school. Tired of sharing a key between his parents and siblings, [Ramicaza] decided to soup up his ride with a fingerprint sensor allowing for key less start.
He’s using an ATtiny85 and a GT511-C1 finger print sensor from SparkFun. After throwing together a circuit on a breadboard and testing the concept he went straight to a PCB prototype for install in the cart. What we really like is the case he integrated into the golf cart’s dash. It features a flip-up lid which turns the circuit on when it is opened, and off when it is closed to save battery. Scan your finger and a relay triggers the ignition allowing you to drive away.
Continue reading “Biometric Secured Golfcart Allows For Keyless Start”
[Saftari] was inspired by the technology used to capture video in the MotoGP World Championship races to create these instructables on how to build an auto-leveling Gyro camera. The setup he developed maintains the camera at a consistent level perpendicular to the earth no matter how much the motorcycle angles against the ground when turning.
The components involved include an Arduino Uno, a Triple Axis Accelerometer, a digital servo, and a Gyro breakout board. A bracket was built to house and secure the camera to the side of the vehicle. 2mm acrylic was used for this and was bent by heating up the material. Once complete, test runs were completed showcasing the capabilities of this type of Do-It-Yourself rig.
The quality of the video after the break is a little bit blurry, but it proves the point that a Gyro camera setup can be built at home:
Continue reading “An Auto-Leveling Gyro Camera For Motorcycle Enthusiasts”