[youtube=http://www.youtube.com/watch?v=6vEEx4rfugE]
This looks like someone watched the Obsolete Technology Band, and had to have one of their own. It appears to be a dock, driving several different sizes of old hard drives. While the concept isn’t new, we thought they did a decent job of putting the whole display together. It could be fun to have that mounted on our wall, waiting for geek friends to impress.
[vimeo=4038918]
[Steve] is in the MFA Design and Technology program at parsons, and as part of his studies, has built a couple really interesting projects. First, the Beat boxxx, as seen in the video above, is an 80’s retro looking portable beat looper. You create and loop your beats at the time of playing using simple hand gestures. The look is great, for those who enjoy cardboard and magic marker, though we think some tonal variation and possibly a wider pitch variation would really make this fun.
His second project is Speak to Me/Breathe. This project was meant to be a commentary on security in our daily information. He is visually displaying the braille symbols to spell out his emails. If any person were to spend the effort, they could decipher his emails. The finish on this project is quite nice, you can see a video of the display after the break.
We touched on harmonic table MIDI controllers when [aris] was building one. [Ken Rushton] has one of C-Thru’s commercial keypads, the AXiS-49, and disassembled the device to show how it works. A PIC18F2450 microcontroller provides the USB interface and is connected to a dsPIC33FJ128GP310 digital signal controller which decodes the keypresses. The membrane buttons are made with two concentric graphite disks that touch gold contacts. The microcontroller measures the time between the two points contacting to determine the button velocity. monome button clones also use circular contact pads, but cannot calculate velocity because they only have one element.
[via Matrixsynth]
Microchip’s MCP6S21/2/6/8 are programmable gain amplifiers that multiply an input voltage by a factor of 1, 2, 4, 5, 8, 10, 16, and 32. The MCP6S22/6/8 also have selectable input channels for working with different signal sources. The multiplication factor and input channel are configured through an SPI interface. This chip is useful for multiplying a small input signal, and selecting among several analog input sources. We demonstrate the six channel MCP6S26 below.
Continue reading “Parts: Programmable Gain Amplifier (MCP6S26)”
A team of three PhD students constructed this ‘multi-mallet automatic drumming instrument (Madi)‘. Their Expressive Machines Musical Instruments site is dedicated to building instruments like this and they recently showed their work at the first annual Guthman Musical Instrument Competition. A ‘low-stakes X Prize’ for musical instruments. 25 applicants were chosen to show their unique musical instruments for $10K in prizes. We like the team’s Madi because it’s adapting a traditional instrument and then pushing it to the limit. It reminds us of the Crazy J mechatronic guitar from 2005. You can see a video of the Madi playing below.
Dallas/Maxim’s DS1801 is an audio volume potentiometer with a simple SPI interface. This chip has two channels of volume control that might be useful in a DIY audio project. We previously looked at the DS1807, a similar part with an I2C interface. This week we’ll show you how to use the SPI version.
Continue reading “Parts: DS1801 SPI Audio Volume Potentiometer”
You should all know the drill by now. New electronics hit the market and someone has to post pictures of it spread open bit by bit. The new shuffle is no different as iFixit shows us. There are some very nice pictures of the entire process. As you can see, most of the space is taken up by the battery. The thing that is probably most striking here is the main problem that many people have with it; there aren’t any buttons.
[via Makezine]
