[Bob’s] Pac-Man clock is sure to appeal to the retro geek inside of us all. With a tiny display for the time, it’s clear that this project is more about the art piece than it is about keeping the time. Pac-Man periodically opens and closes his mouth at random intervals. The EL wire adds a nice glowing touch as well.

The project runs off of a Teensy 2.0. It’s a small and inexpensive microcontroller that’s compatible with Arduino. The Teensy uses an external real-time clock module to keep accurate time. It also connects to a seven segment display board via Serial. This kept the wiring simple and made the display easy to mount. The last major component is the servo. It’s just a standard servo, mounted to a customized 3D printed mounting bracket. When the servo rotates in one direction the mouth opens, and visa versa. The frame is also outlined with blue EL wire, giving that classic Pac-Man look a little something extra.

The physical clock itself is made almost entirely from wood. [Bob] is clearly a skilled wood worker as evidenced in the build video below. The Pac-Man and ghosts are all cut on a scroll saw, although [Bob] mentions that he would have 3D printed them if his printer was large enough. Many of the components are hot glued together. The electronics are also hot glued in place. This is often a convenient mounting solution because it’s relatively strong but only semi-permanent.

[Bob] mentions that he can’t have the EL wire and the servo running at the same time. If he tries this, the Teensy ends up “running haywire” after a few minutes. He’s looking for suggestions, so if you have one be sure to leave a comment.

Amazing 3D rendering in real-time

Ah, the 90s. A much simpler time when the presenters on Bad Influence! were amazed by the 3D rendering capabilities of the SGI Onyx RealityEngine2. This giant machine cost £250,000 back in the day, an amazing sum but then again we’re getting nostalgic for old SGI hardware.

Well, Mega is taken… let’s call it Grande

[John Park] needed to put something together for last month’s Maker Faire. A comically large, fully functional Arduino was the obvious choice. If you didn’t catch the demo last month, you can grab all the files over on Thingiverse.

Is that an atomic clock in your pocket or… oh, I see.

Here’s the world’s smallest atomic clock. It’s made for military hardware, so don’t expect this thing to show up at Sparkfun anytime soon; we can’t even fathom how much this thing actually costs. Still, it’ll be awesome when this technology trickles down to consumers in 10 or 20 years.

Converting a TRS-80 keyboard to USB

[Karl] is working on an awesome project – putting a Raspberry Pi inside an old TRS-80. The first part of the project – converting a TRS-80 keyboard to USB – is already complete. We can’t wait to see this build finished.

 A DIY Propeller dev board

Last week we complained about the dearth of builds using the Parallax Propeller. A few noble tinkerers answered our call and sent in a few awesome builds using this really unique micro. [Stefan]‘s Propeller One is the latest, and looking at the schematics it should be possible to etch a single-sided board for this project. Awesome work and thanks for giving us a weekend project, [Stefan].

Canadian modder Brent Smith has managed to connect an aging exercise bike to Nintendo's perennial racer. Naturally, there's some Arduino involvement, but the whole setup plugs directly into an original SNES console -- no emulation necessary. Power-ups are accessed with a button in the center of the exercise bike's handles, each of which has a directional button for steering, while the pedals function as the acceleration button, accurate to one sixth of a rotation. According to Smith, "it's a lot harder than it looks" -- and we believe him. Watch his test-drive kart plow off-track in the video demo after the break.

Continue reading Exercise bike connects to original Mario Kart, Rainbow Road shortcut gets even trickier (video)

Exercise bike connects to original Mario Kart, Rainbow Road shortcut gets even trickier (video) originally appeared on Engadget on Mon, 16 Apr 2012 05:02:00 EST. Please see our terms for use of feeds.

Looking for another way to use that aging VGA CRT screen hogging space in the closet? Try making your own dedicated weather screen by mixing together Google's meteorological data stream and some Arduino magic. It looks like parsing that Google Weather data was a bit of a challenge on the miniscule 2KB of RAM, but a tinkerer going by the handle Zmashiah has managed to do it. He's even managed to cram in a few extra graphical flourishes, including icons and background themes that change depending on the temperature and time of day. The entirely PC-free device grabs the data through an Ethernet connection and flashes up all the weather goodness in stunning VGA. Any meteorological mavens reading this can grab the full shopping list and procedure at the Instructables link below.

Arduino kit beams low-fi Google Weather to VGA screens originally appeared on Engadget on Tue, 22 Nov 2011 08:31:00 EST. Please see our terms for use of feeds.