the Parallax Propeller and therefore uses the SPIN programming language instead of PBASIC. A number of companies now make "clones" of the BASIC Stamp with additional features, such as faster execution, analog-to-digital converters and hardware-based PWM which can run in the background. The Parallax Propeller is gradually accumulating software libraries which give it functionality similar to the BASIC Stamp; however, there is no uniform list of which PBASIC facilities now have Spin equivalents. See also Arduino updated ARM pin compatible with Parallax BASIC stamp ioBridge Make Controller Kit OOPic PICAXE References External links "Comparing PBASIC 2.5 control structures to the old PBASIC" – By Tracy Allen, EME Systems, 2003 Parallax Forums – Discussion Forum Parallax, Inc. – Corporate website, home of the Basic Stamp and Basic Stamp 2 "Independent review of the Scribbler Robot, a programmable intelligent robot utilizing the BASIC Stamp 2 Microcontroller" – By Andy Kaiser Microcontrollers Parallax, Inc. products BASIC interpreters