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 Servo, www.vigorprecision.com.hk/userfiles/files/SPL_VS-11_V1_0_20090831.pdf