Motors, steppers and drivers
Get flash to fully experience Pearltrees
A Simple PWM Circuit Based on the 555 Timer
One of the most fundamental problems in robotics is DC motor speed control.
Bipolar Tutorial
Copyright Notice: (C) June 2000 by Russell Laidman. All Rights Reserved. ------------------------------------------------------------------------------------ The material contained in this project, including Tutorials, Documentation, and Software is copyright protected.
I had previously built a reciprocating air engine out of wood back in 1985, and posted it here in 2007.
Wood-made air engine
Frictionless Machines from Rollers & Bands (Rolamite)
{*style:<b> rexresearch.com </b>*} The first (or second, after Bellocq's wave-pump) new mechanical principle discovered in the 20th century.This engine is available ready assembled and in self-assembly kit form, select option above when adding to basket. The ready assembled engine is supplied in a rigid black card tube, approximately 160mm diameter and 200mm tall, which is carefully filled with supportive styrofoam chips and then wrapped in a waterproof and tamperproof blue poly-mailer.
KS90 Solar LTD (assembled) - From www.stirlingengine.co.uk