February 2010

DIY Single-Ended Tube Amplifier

Here is a nice DIY Single-Ended Tube Amplifier design with a bit of Transformer inspired artwork made from some painted copper clad board. Thanks Gio. “For the circuit I used home made (hand etched) circuit boards, but the tube amplifier is so simple it can be easily connected with point-to-point wiring, especially if you choose to heat the tubes using AC. The LM338K is mounted (with electrical isolation) to an

Arkanoid on uOLED-128-G1(GFX)

Anna Ceguerra has just completed work on Arkanoid which can be played on the uOLED-128-G1 display. If you want to have a look and give it a try all the code has been provided. “The ball bounces off walls, rectangles and the platform. The code and images work on the uOLED-128-G1(GFX). This is not meant to be a faithful replication of the original game.”

Drumming Robot

Here is a cool Drumming Robot that can carry a tune. There is a long list of improvements that are slated to be added including voice control! We will have to keep our eyes on this one to stay on top of the build progress. “Robot Info Actuators / output devices: 4 hacked servos for driving, 2 servos for head movement, 2 modified servos for drumsticks 1 doorbell for ticking

Keyboard Keep Alive Circuit

If you have had your computer fall asleep at the worst possible time before you know how frustrating it can be. Todd Harrison from Toddfun.com has come up with a solution. He built a simple battery operated Keyboard Keep Alive Circuit that he stuffed in a cute candy tin shaped like a Wiimote. This circuit closes a relay contact every 25 seconds. Next he connected an interface jack to his

Wooden Gear Kinetic Sculpture

I have been putting the final touches on the Gear Clock kit which is made up of wooden gears. I have a new appreciation of the effort it takes to make something work well when it is constructed out of wood. MechanicalSculptor makes it look easy! This Parabola project us a true work of art, it’s so smooth and repeatable. His work is a real cut above. ๐Ÿ™‚

RC Airplane Autopilot for Aerial Photography

This Autopilot for Aerial Photography slide show that was done for Barcamp Antwerp looks really interesting. “The autopilot has a built in mixer. On first use you need to tell the autopilot what the channel and mixer arrangement of your transmitter/airplane combination is. To put the autopilot in calibration mode, switch on the transmitter, put all sticks in the center and switch channel 6 to “ON”. Now turn on the

Name the Thing Contest - 118

As promised the contest this week will be a bit harder. ๐Ÿ™‚ Also the previous winners of all outstanding contests including the Happy Holidays 2009 Contest will be determined and posted today. The prize this week is one of those popular micro helicopters. It uses IR from the controller to send control data to the small chopper. It’s sure to provide tons of cat tormenting fun. You don’t need to