Month: September 2007

Make an office amp

Make an office amp

Fred writes – Here’s a very quick 30-40W/channel stereo amp that nearly anyone can make. It uses LM3886 chips, and is based loosely on the GainClone amps people seem to like making, using point-to-point wiring and off-the-shelf stuff. The amp sounds great, and is small enough to stick on the shelf at my office! Decent […]

Amazing bento art

Amazing bento art

Nonlineargirl writes – This Japanese site documents a mother’s daily bento preparation – each one a work of edible art. I saw an article in my local paper about this, and followed the link mentioned. Click the month links at the top of the page (in English) to see what the bento art looks like […]

Soda can needle disposal

Soda can needle disposal

Low cost way of disposing of used needles, great article @ Business week… – “When I was nine, I was rescued,” says industrial designer Hân Pham. She’s not speaking metaphorically. Fleeing the communist Vietnamese regime in the 1980s, Pham, her older brother, and her father–a political dissident–were plucked from the China sea by West German […]

Calling all Makers in Houston, TX 9/16 – The Children’s Museum of Houston

This past May, a jaw-dropping 45,000 people gathered at the San Mateo Fairgrounds in California for an event some called, “The Woodstock for inventors.” A one-of-a-kind event for tech geeks, crafty hipsters, DIY lovers, and basically, anyone who builds anything–from 7 year-olds to 70 year olds–Maker Faire brought together people from over 10 different countries […]

RC4560-based headphone amplifier

RC4560-based headphone amplifier

This SMD op-amp project uses the TI RC-4560 dual op-amp chip and a salt water-etched PCB. The builder got the op-amp as a free sample from Texas Instruments and scavenged all of the SMD resistors from old hard drive electronics. The results are not pretty, but they’re functional. The circuit used (with some changes) is […]