I spent three hours to enlarge square hole in one of top vertex frames.
Tools I used for the tedious job: power drill with 3 mm bit, square file, flat file, and Vernier caliper. 44 more words
Fed up with the limitations of current computer chips and their related intellectual property, a team of researchers at the University of California, Berkeley, is pushing an open source alternative. 726 more words
According to Wikipedia, Arduino is a single-board microcontroller, intended to make the application of interactive objects or environments more accessible. The hardware consists of an open-source hardware board designed around an 8-bit Atmel AVR microcontroller, or a 32-bit Atmel ARM. 346 more words
Parallax has embraced open source hardware by releasing the source code to its Propeller 1 processor (P8X32A). Designed by and released in 2006, the 32-bit octal core Propeller has built up a loyal fan base. 268 more words