In Codebox: Save sensor data to Google Spreadsheets, reader Stairs observed that the sketch blew up when he didn’t have an Arduino device hooked up. When he dug out the device, plugged it in, and restarted the sketch, it worked fine. This post provides a gentle introduction on how to deal with these types of errors..
I love these peacock tea towels that Christy Petterson posted in her curated handmade treausry today, Created Treats.
Anthony Pego, aka Reddit user pegothejerk, says, “I built a robot dresser out of end table scraps I found on the side of the road. My nephew is going to freak.”
Pictures of the construction process reveal that the dresser seems, actually, to be mostly built from stock lumber, with the found object serving as base, frame, and/or inspiration. [Thanks, Marc!]
Olek and the charging bull on Wall Street! [via adafruit]
Artist, Jacob Dahlstrup Jensen, uses a tattoo machine to create three-deminsional art on paper. You can watch him in action in a video on his web site. [via Claire Chauvin]
The Bulbdial Clock kit works like an indoor sundial, but with three shadows of different length. You tell the time just like you do on a normal clock, by reading the positions of the hour, minute, and second hands. The kit comes complete with three custom circuit boards, 72 ultrabright LEDs, pre-programmed ATmega168 microcontroller with […]
Ben from West Lafayette, IN, wrote in to share his amp project. A Class-D amplifier operates the output transistors as switches instead of as variable resistors, as in more traditional amplifiers. In doing so, nearly all conduction losses in the output power devices are eliminated, leading to a very efficient amplifier.
