Laser harps seem to be catching on. This one is a work in progress and believe it or not there is no microcontroller or computer controlling the system. For more information have a look at the project page (translated version). “This is my first video showing the sensor-circuit working, that contains 4 opamps (LM358) and only has a +5V supply (no negative supply). You can understand it’s a challenge to
Our friend Csaba Bleuer sent in this crazy project he completed. It is a Rotating LED Globe which is being driven by a ATMega Microcontroller. The globe image was created using a program called BmpToAscii, with this program an image can be converted into Ascii. In this case the Ascii is used to display the globe! We have seen some other spinning LED globes in the past but this one
DIY medical equipment is not a big hobby area but this DIY Pulse Oximeter is one cool device. I have no idea what a commercial Pulse Oximeter but like anything medical the real stuff that is used in hospitals usually costs big bucks. In this case your finger is slipped between two pieces of medical grade oak to take the reading. The project is based around the powerful 68HC908AB32 microcontroller.
We often keep important data or personal information on devices that we feel is secure. Well think again. Even though these phones that Will O’Brien picked up had their personal messages locked by PIN simple plugging in a serial cable allowed the messages to be pulled right out. “Hooking up the serial port is just a matter of connecting a 3/32″ audio connector up to a TTL USB serial cable.
The prize this week is a mountaineering clasp that is sure to add some flair to your keychain or provide a cool way to clip your backpack in place. This contest will run for one week (May 1- 7, 2010) . Ending time is based on central standard time. To enter, identify the item pictured above and give an example of what can be done with it. Please do not
We have seen a Ball Balancing Robot before but this one takes the cake! It was developed by Masaaki Kumagai and Takaya Ochiai from the Robot Development Engineering Laboratory and Department of Mechanical Engineering and Intelligent Systems at the Tohoku Gakuin University in Japan. Via: Make and IEEE “The robot they built rides on a rubber-coated bowling ball, which is driven by three omnidirectional wheels. The robot can not only
If you are looking for a new piece of test gear to help you with your next design have a look at what Matt from Openschemes has come up with. He has taken a Top2005 EPROM Programmer and hacked into a Desktop Test Bench! “Do you ever find yourself wanting an IC tester? Some way to power up an IC and apply various voltages and signals to different pins, in
