Welcome to MagicLand

After 25 years, massmind.org, a life long repository of learning by James Newton, has lost it's host and primary server. Sadface. Over time, I plan to move most of the valuable content to this github.com hosted site instead. For now, it's just the stuff I was already hosting on github.

• The Hybrid Disk Encoder project An ultra low cost (laser cut) optical encoder easily supporting over 1M CPR ( less than 0.001 degree / 2 arcseconds ) with (optional) absolute position support. It does NOT require an FPGA.
• Arduino Dynamixel / Stepper / IO Controller
• The SDMG-Web-Bot An ESP based "battle" robot controller that uses your Cellphone webbrowers NOT an app.
• WebBot A simple demonstration of a frame difference based vision system for the
  BlinkBot A stunningly cheap robot based on a smartphone using light blocks on a web page to control a cheap Arduino. See also: Related circuits / simulations.

Educational stuff:

• Things I learned building robots (over 40+ years)
• Web / HTML / Javascript / IOT class
  Live Samples
• ESP-8266 / NodeMCU Blink Servo Bot
• CARDIAC: An online simulation of the original cardboard computer trainer