Make Your Own LEDs

May 7, 2009 by Caleb Kraft 19 Comments

diyled

Ever wanted to make your own LED? You might be tempted to after reading how easy it is. No, this won’t really be a practical LED that you would use to light a project, but it is very cool anyway. [Michael] picked up a box of Moissanite, or Silicon Carbide, on eBay for roughly $1. Making the LED is as easy as putting your positive lead to the crystal and touching it with a sewing needle attached to a negative lead. He has tips on how to get the best results as well as a little bit of history of LEDs on the site.

[thanks Andreas]

An Amazingly Professional LED Bike Light

May 7, 2009 by Caleb Kraft 15 Comments

light1

[Tom] sent us a link to this very professionally done project. He built a bike light that is a 540 lumen Luxeon light with a custom case. The LED, Lens, and driver were purchased first. Everything else was designed around it. The design is compact and good looking. You can download the CAD files on the site if you want to make your own. He is using an Atmel AVR ATTiny13 to control brightness.

PSP 3000 Firmware 5.03 Hacked

May 7, 2009 by Caleb Kraft 88 Comments

[youtube=http://www.youtube.com/watch?v=Qn2Z8bYr3tE]

PSP firmware 5.03 has been hacked by Team Typhoon. This allows you to run custom code on the PSP by taking advantage of the tiff exploit. You’ll have to wait to download the hack though, they haven’t released it yet. This means those of you still on 5.02 or still using the little blue tool will be able to upgrade soon.

Portable Coil Pistol

May 7, 2009 by Caleb Kraft 57 Comments

[Daniel] had to have runaway in his mind when he built this coil gun. It’s hand held, holds 14 42 gram rounds and can propel them at speeds of 110km/h. Of course when it is battery powered, you have a 90 second warm up time between shots. It can also be used while plugged into a wall socket, which reduces the charge time to roughly 3 seconds. Great job [Daniel].

[via engadget]

Drawing Robot, Lego Style

May 6, 2009 by Caleb Kraft 11 Comments

[youtube=http://www.youtube.com/watch?v=_ogQuLdEcBY]

Here’s a pretty cool project done with the Lego NXT system. It’s a robot that will draw you a picture. Yes, we know it could be done cnc style, but this is much more fun. You load a picture into the software, adjust the levels so the software can create the vector version more easily, then let it rip. Now they need to add face recognition.

Mouse For Your PSP

May 6, 2009 by Caleb Kraft 13 Comments

[youtube=http://www.youtube.com/watch?v=oEwhgJ9XzHQ]

[TokyoDrift] has added mouse support to his PSP. He’s using a microcontroller to interpret for the PSP, through the serial port. You can see in the video above that this provides a functional mouse control, especially useful for first person shooter style games. He’s got lots of details as well as schematics available in the forum posts. We’ve seen other controllers added to the PSP, but this is the first time we’ve seen a mouse.

[via engadget]

Modular POV Final Project

May 6, 2009 by Caleb Kraft 12 Comments

pov

[Jonathan] sent us his final project for ECE 476. His group built an LED POV display that can be updated wirelessly from a computer. They built it in a somewhat modular fashion, with the LED strip being a simple to replace module. This goes along with their plan to build a 3D version of the display. They have made it able to switch easily from it’s internal programming to direct computer control, allowing them to leave it alone in clock mode, or take control to play with it. The updates seem really quick, you can see them in effect in the video after the break. All source code and schematics are available on the site. We love these final projects, they usually have tons of data and great pictures. Keep them coming.

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