Economical Sources of Balancing Bot parts, software and accessories used in this article: Parallax, www.parallax.com (888) 512-1024 Sharp Electronics, www.sharpusa.com Sharp sensors & accessories, Junun.org: www.junun.org/MarkIII/Info.jsp?item=37 GP2D120 short range www.junun.org/MarkIII/Info.jsp?item=73 GP2Y0A21YK long range http://www.junun.org/MarkIII/Info.jsp?item=38 cable & connector Basic Stamps, www.parallax.com/tabid/134/List/0/CategoryID/9/Level/a/SortField/0/Default.aspx PBASIC Editor, www.parallax.com/tabid/441/Default.aspx Vigor VS-11 …

Note: This is supplemental material for the article in ROBOT magazine, Sept/Oct 2012, by Eric Ostendorff. The subject is adding sensors to a PicAxe 20M2 mobile robot. FYI, a companion article about using a RoboVoice speech module was deleted from the magazine. Some of the code …

Eric Ostendorff has provided a two-part article on hacking the Parallax Scribbler robot.

PICAXE 20M2 + Magician Chassis = MaGicAxe Mobile Robot! by Eric Ostendorff This material supplements a construction article in ROBOT magazine, July/August 2012. It uses information from parts 1 and 2 in previous magazines about circuit building and programming. Builders should reference those articles in order …

PICAXE PART II: Small Arms Expert! This is supplemental information to the construction article in ROBOT magazine, May/June 2012, by Eric Ostendorff. See source code provided at the bottom of this page. ABC Blocks Supply Voltage: I use 4 rechargeable NiMH AA cells to power the …