Sound localization and a treaded rover

soundlocalization_and_a_robot

[Jad] recently wrote in to share a pair of projects that have been keeping him busy as of late. The first is a sound localization system not unlike one we showed you a few weeks ago. The difference is that his system displays the sound source via a set of LEDs rather than by motion, making it far less prone to interference by things like servo noise. His system uses four identical circuits, … [Read more...]

Automated chess set does it from below

automated-chess-set

You can get class credit for the coolest things these days. Take for instance, this Automatic Chessboard that [Brian] and [James] built for the final project in one of their classes this spring. We just looked at a robotic chess setup on Monday that used a gripper mounted on a gantry to move the pieces. This one's a lot more user-friendly and borders on magical. That's because the moving parts are … [Read more...]

Great junk-yard find leads to a reclaimed control panel project

reclaiming-a-panel-meter

Having the "can you believe somebody threw this away?" mentality has gotten us into some trouble through the years, but look what [Joshua] found at the scrap yard! It's a door from a power conversion station and it contains fourteen indicator lights and a lot of other doodads. But since this is just the door, he needed a way to monitor the controls and drive the indicators. At the heart of the … [Read more...]

An odd little box

an-odd-little-box

Here's an odd little box that might get those creative juices flowing for the upcoming Halloween season. [Jeremy's] creepy glowing box has a pair of ping-pong ball eyes which diffuse the red light from a pair of LEDs. Both the lid and they eyes move, and the whole thing is set up for wireless control. The majority of the parts came from a toy RC helicopter that [Jeremy] had sitting in his junk … [Read more...]

Wireless hackerspace status notifier

space_probe

Hackerspaces are always looking for novel ways to let their members know that they are open for business, and this notifier [Angus] from Make, Hack, Void recently put together is no exception. While dumpster diving one day, he came across a fantastic-looking lab power supply from the ‘70s. He gutted it, saving the variable transformer for a future project, and started constructing his … [Read more...]

Building your own real time clock

diy_rtc

Like many electronics hobbyists, [Pete] found that he had an overwhelming desire to build a clock for himself. He didn’t want to stick a discrete real time clock IC into a box and call it a day, so he opted to construct his own around a microcontroller instead. After researching the specs on a few RTC ICs, he defined some accuracy requirements for his clock, and got to building. He started … [Read more...]

Wireless 4 Channel Temperature Monitor From Arduino Libraries

tempmon

Say what you will about the Arduino platform but there certainly are a ton of libraries one can choose from. That is precisely what [Dan Julio] set out to do when building his slick looking 4 channel temperature monitor. The monitor consists of an Arduino RBBB, 2x16 character LCD and four DS18B20 1-wire digital thermometers. [Dan] also includes a bluesmirf to interface with an OS X monitoring … [Read more...]