H-Bridge – Kerry D. Wong

A Sensitive DIY Ultrasonic Range Sensor

January 22, 2011 By kwong

I needed some ultrasonic range finders for my project. But most of the commercial sensors like Parallax’s PING sensor and other similar products are quite expensive, especially if multiple units are needed. So I thought why not building it myself?

A Simple Dual H-Bridge

March 22, 2010 By kwong

H-bridge is frequently used to control DC motors and stepper motors. When controlling a bipolar stepper motor, two full H-bridges are needed. There are many H-bridge ICs (like L298, MPC17529 and SN754410 which is a quad half H-bridge) for just…