[James Bruton] built an electric skateboard out of oversized LEGO bricks he printed himself, and equipped the board with an excellent re-creation of a classic motor.
He began by downloading brick, gear, and pulley designs from Thingiverse and printing them up five times their normal size, taking 600 hours. The deck consists of 8M Technic bricks lengthwise and 4M bricks crosswise, with plates covering top. There’s even a monster 5×6 plate that’s clearly courtesy of a parametric brick design because you won’t find that configuration among LEGO’s official parts.
The coolest part of the project is probably [James]’ re-creation of an old school LEGO motor. He sized up a 6216M Technic motor originally rated for 4.5V swapping in a 1.5 kW, 24V motor controlled by a 120A ESC and powered pair of Turnigy 5000mAh LiPos wired in series.
[James] had to design his own casing in Blender because couldn’t find a file for the original LEGO part—pro tip for the future, LDraw has the 6216 design and it can be dropped into Blender.
Another nice touch are the wheels, with hubs based off upsized 40-tooth Technic gears with Ninjaflex tires that weigh half-a-kilo each and took 32 hours apiece to print.
We’ve published a lot of [James] ‘ work, including his BB-8 model and some of his other Star Wars models. Continue reading “Electric Skateboard Rocks the Giant LEGO”
Kids, please don’t try this at home. Or at least make sure there’s nothing flammable around.
With that out of the way, we have to ask — who doesn’t love playing with fire? We’re betting that many of you also have enjoyed a little skateboarding at some point in your lives. [mikeasaurus] has married the two beloved activities and made a flame throwing skateboard! The parts count is fairly low, and it looks like everything can be purchased from Amazon if you can’t source all of the items locally.
[mikeasaurus] gives a few useful tips such as how he bent one of the two pipes on the fuel tank cap to prevent fuel from pouring out. Also, he used an adapter to bring down the diameter of the tubes from 1/4″ to 1/8″ which makes for a better performing fuel stream.
Instead of making this little foot cooker more complicated with additional electronics and wires to be operated by a hand-held remote control, [mikeasaurus] decided to build the controls directly into the skateboard with just a couple of foot-activated switches. This keeps his hands free to wave at all of the onlookers watching him speed by. Or better yet, to carry a fire extinguisher.
Admittedly, it appears from the video that the flame doesn’t really get ‘thrown’ too far, and [mikeasaurus] himself says:
“As long as you’re moving forward when the flames are activated, you’re good to go!”
Because of this, you probably don’t want to use your favorite board, as it’s going to be subject to direct flames.
You’ll see this when you watch the video after the break.
Continue reading “Light a Fire Under Your…Skateboard?”
Do you have a car? Does that car have a manual transmission? Do you want to beautify your shifter knob, while simultaneously gaining mad street cred, yo? Well, you’re in luck, because all of that can be done for the low, low price of a couple old skateboard decks, a lathe, and a lot of glue.
This project, from [basiltab] illustrates how you can use old skateboard decks to create really cool looking custom shifter knobs. The process starts with cutting the decks up into uniform strips, which are then glued and clamped to form small planks. Sections of the decks were alternated, to create a visually interesting pattern. The planks are then sanded so that they’re smooth and flat, and then glued up in a jig to form blocks with a threaded aluminum insert in the center. Optionally, aluminum can be used for some of the layers to add a little flair (2-part epoxy was used in place of glue for the aluminum).
After the glue has dried, the blocks can then be turned on a lathe to create the desired shape of the knob. As you can see, the results are pretty darn nifty. And, they certainly have a little more artistic credibility than the giant acrylic shifter knobs you normally find at your local auto parts store. Don’t worry, if you thought this article was about shift registers, we’ve got you covered there too.
There’s something to be said for whizzing around town on your own automatic personal transport. It’s even better when you’ve built it yourself. That’s just what [The Raspberry Pi Guy] did – built a Wiimote controlled, Raspberry Pi Zero powered skateboard and whizzed around Cambridge to show it off.
It’s a fairly simple build – skateboard, battery, motor and mount, controller, Wiimote and Pi Zero. The Raspberry Pi controls the motor controller which in turn controls the motor speed. The Python code that [The Raspberry Pi Guy] wrote comes in at around a hundred lines and manages the motor controller and the Bluetooth connection to the Wiimote, which is used to control the board’s speed while the user controls the steering. [The Raspberry Pi Guy] says he’s gotten up to 30 km/h on the skateboard, which, given a powerful enough motor and a non-bumpy surface isn’t hard to believe.
It may seem a bit of overkill, running a bit of Python on a Raspberry Pi to run a motor (others have done it with something simpler) but it’s a fun project nonetheless. [The Raspberry Pi Guy] describes where he got the parts to put the skateboard together and has released the Python code on his GitHub page.
Continue reading “Pi Zero Powered Skateboard”
The team over at [Braille Skateboarding] is willing to ride just about anything. This week they’re testing out 3D printed skateboard wheels. We’re not just talking rolling around here, the [Braille] team takes their experiments out to the skate park and gives them to the locals to test out. Tail whips, jumps, ollies, and grinds were on the agenda. The skaters were a bit apprehensive, as this is the third time they’ve tested 3D printed wheels.
The first set shattered upon landing a jump. That set appears to have been made from PLA with about 10% infill. The second set were made from NinjaFlex, which had no shattering problems, but was so squishy that the wheels simply flattened under the weight of the riders. The third set, printed by [Nick Lindenmuth] work great. They have a bit of give, but don’t shatter. We’re guessing this set is either ABS or one of the more exotic filaments. It’s pretty amazing that 3D printers are capable of spitting out wheels that not only handle the load of rider, but the shock load of coming down from jumps and tricks.
Check out the video after the break. If you want to see more skateboard projects, check out this skateboarding themed Hacklet!
Continue reading “Skateboard Hackers Trick on 3D Printed Wheels”
Skateboarding is a sport that was born of hacking. The identity of the person who first nailed roller skate wheels to a board with a milk crate box is lost to history. Those crate scooters were a staple of the 1940’s and 1950’s neighborhoods. Everyone built their own scooter, so the designs evolved. Eventually the milk crates disappeared. At some point, surfers realized that they could use these wheeled boards to surf the concrete jungle. Things just took off from there. Skateboarding is now a multi-billion dollar industry, but at its heart there are still hackers trying out new designs. This week’s Hacklet is all about skateboarding projects.
We start with [brian.rundle] and Electric Longboard. [Brian] built his board using trucks and mechanical parts from a DIY skateboard online shop. The motor is a brushless outrunner R/C plane motor from HobbyKing. Batteries are of the LiPo variety. An Arduino Nano provides the PWM signal which drives the Electronic Speed Control (ESC). Throttle control is via RF link using the popular Nordic Semi NRF2401. [Brian] is focusing on building a safe skateboard. He designed it to carry two batteries, though only one is in use at a time. Rather than use a switch, he’s created a fool-proof system with arming plugs and jumpers. Each battery has its own arming plug. There is one jumper, so only one battery can be connected to the board at a time.
Next up is [suiram21] with Longboard Brake. Downhill longboarding can be a dangerous sport. Running downhill at 40MPH or more with no brakes makes for quite an adrenaline rush. [suiram21] loves longboarding but wanted the safety of having a brake if and when he needed it. He started with a Onda board, which is a longboard with large diameter wheels. He 3D printed brackets for a cable actuated braking system. The brake is activated by stepping on a lever at the rear of the board. A lever presses a bicycle brake pad into the inside edge of the tire. This brings the board to a gentle stop. [suiram21] is thinking of adding a second brake to the other wheel to increase braking authority.
Next we have [edbraun] with Skateboard Speedometer by inventED. [edbraun] wanted to know how fast he was going. A GPS would work, but GPS signals are often blocked in cities. A more accurate way to gather speed data is directly from the wheels. Two tiny magnet plugs are placed in holes drilled in the wheel. A hall effect sensor detects the magnets and passes this data on to an Arduino Pro Mini. Once the speed is calculated, it’s sent to a Bluetooth radio. [edbraun’s] Android phone receives the data and displays current speed and total distance traveled. The speedometer and its slick 3D printed case almost hide between the trucks and the board itself. Nice work [edbraun]!
Finally we have Hackaday alum [Josh Marsh] and EV Commuter Longboard. [Josh] uses an electric longboard for his daily commute. His project is an excellent overview and tutorial on building an electric skateboard from scratch. Like many others, [Josh] utilizes R/C Airplane brushless motors and speed controllers. An Arduino or similar microcontroller is all you need to drive these devices. For batteries, [Josh] loves LiPo packs. Long form six cell affairs provide 22.2 Volts with a capacity of 5000 mAh or more. Plenty of power for carving your way to work!
If you want to see more skateboard projects, check out our new skateboard projects list! If I missed your project, don’t be shy, just drop me a message on Hackaday.io. That’s it for this week’s Hacklet. As always, see you next week. Same hack time, same hack channel, bringing you the best of Hackaday.io!
If you’re looking for a quick and easy project to get into virtual reality, making your own VR skateboard controller is actually pretty easy to do!
First you’ll need some kind of VR headset. You could buy a fancy one, like the Oculus, or a Samsung Gear VR — or you could use something as simple as Google Cardboard — and you could even make your own. All it takes is a phone, an Arduino, a Bluetooth module, and an accelerometer-plus-gyroscope IMU.
Continue reading “DIY Virtual Reality Snowboard”