DIY Projects

How-To Tuesday: Make a Beetlebot

How-To Tuesday: Make a Beetlebot

Photography by Jérôme Demers Ultra-simple bugbot navigates obstacles with feelers and switches. By Jérôme Demers The Beetlebot is a very simple little robot that avoids obstacles on the floor without using any silicon chip — not even an op-amp, and certainly nothing programmable. Two motors propel the bugbot forward, and when one of its feelers […]

Maker courses

Maker courses

Creating a Maker Course In the next month or so I will have a semester change, and with it an opportunity to restructure the sequence of three courses. Robotics, Building and Repairing Computers and Web Design are three classes that I have taught before, and am looking to streamline the content of the courses. The […]

Standalone printer hack

Standalone printer hack

Standalone printer hack via HaD. Good for a prank! Jeroen writes… To talk to the Laserjet, I decided on using the Centronics parallel port. I could have used the serial port too, but I remembered the parallel port protocol was easy to implement, and the Centronics-port was said to have a +5V from the printer […]