[vimeo=4366452]
[Justin] sent in his 1st place winning project from Northeastern’s Electrical Engineering Senior Design Capstone. It’s an interface that uses electrostatics to detect your hand position above it. As you can see in the video, it has decent resolution and can detect position on all 3 axes. When they uncover it, you can see the sensors arranged in a grid. They point out that each sensor isn’t just like a button, but rather detects a range of motion. They are using a pic 18×4550 to handle the sensors, which then communicates to the PC via USB. This could be pretty useful for musical performances as well as an alternative interface for people who can’t use a mouse.EO
Peripherals Hacks1524 Articles
Analog Audio Recorded On A Floppy
[Jeri ellsworth] of fatmanandcircuitgirl.com has made an audio recorder out of a floppy disk and an old tape recorder. She’s able to record 15 seconds of audio directly to floppy disk. In the video after the break, she explains how it works, and why you hear the creepy reverb effect. The next step is to run this as a pedal effect for stage music, and she even mentions doing a larger hard drive version with the ability to seek tracks.
Condenser Microphone Building
Browsing around today, this project caught our eye. Mainly due to the visual similarity to, well, personal massagers. As it turns out, it’s a home made studio condenser microphone. We would generally prefer to link directly to his personal page, that has a slightly more in dept write up, but it has popups and pop unders, so enter at your own risk. Generally condenser mics require phantom power to make the magic happen, but he has included a circuit to run them off of 9v batteries. We’ve done condenser mics before, but this seems a bit quicker and dirtier.
Phillips AmbX Dissected
[youtube=http://www.youtube.com/watch?v=sjSv2VNKnvY]
Electrosthetics has taken it upon themselves to open up and explore the insides of a Phillips AmbX system. The unit is supposed to help immerse you in your video games by adding ambient lighting, vibration, and wind. They got the starter kit, which is missing some bits. Interestingly they found that the hardware was not hampered in any way. You could plug in fans and such and, in theory, build the larger kit. There are lots of pics of the various pieces for you to look at. They note that the hardware all seems decent, but it’s the software that really causes issue. On their Vista64 dual core machine, the software was eating up an entire core to do ambient lighting.
Felix’s Machines
[youtube=http://www.youtube.com/watch?v=4CdA-ivDj8o]
Ok, we know you’re going to get mad, there’s virtually no information on the technical side. But the music was so pleasant, and that’s rare. There’s an interview with Felix, the creator, where he discusses his goals and ideas behind the project. We prefer just to sit and watch though. If you want to make something similar, there were some technical details on a mechanical drum recently.
[Thanks Hash]
Radish – Eco Friendly Google Calendar
[youtube=http://www.youtube.com/watch?v=VyHaImmmkGs]
[Aaron] a google employee came up with an idea that would be good for the environment, as well as fun. The Radish is a solar powered display, updated from a google calendar, with extremely low power consumption. They are building this to be an indicator of the conference room schedule. When we first read this, we wondered just how much greener it could possibly be than printing a few sheets of paper. Then we read that they were going through six reams per day. wow. The Radish gets its power through a solar panel, and preserves it through some creative power saving modes and the fact that it has an LCD that only requires power to update. Would this be a good place for some E paper? Data is transferred using IEEE 802.15.4, which is slow, but also more efficient in terms of power than normal WiFi. The system is so efficient, it can run for 3-4 days in low light conditions after a charge . Another cool fact is that [Aaron] got to design and build this on company time. Google allows people to spend 20% of their time on innovative new projects of their choice.
correction: the LCD goes into an extremely low power “sleep mode” when not being updated, and retains the last image loaded.
Stepper Motor Controller From Old Scanner
[Murray484] submitted his instructable on how to create a stepper motor controller from an old scanner. He removed the motor and controller from an old scanner then harvested the parts. He’s pretty much starting over, taking the ULN2003 chip from the scanner motor controller and putting it on a fresh board. He then wired it all up, installed the software and got it working. Finally, he built a container out of cardboard for it all. Though he could have made it nicer looking and used higher quality building materials, he was trying to make this a “green” project for the epilog laser cutter contest. He’s done a good job recycling, this could be pretty useful.
