Tag Archives: arduino

Working in Tandem – Unconventional XY-axis layouts for 3D printing, laser cutting, CNC milling, engraving or pick and place.

Posted on February 21, 2015 by Richard

Below I outline three separate concepts for moving in the X and Y plane with a specific emphasis on minimising the moving mass, maintaining high mechanical stiffness, reducing backlash and allowing two stepper motors to work in tandem. It is my hope that these concepts, … Continue reading →

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DIY Dual H-Bridge to control a Pen Plotter

Posted on April 16, 2012 by Richard

In my previous post I pulled apart an old pen plotter revealing it to be controlled by two brushed DC motors.  In order to power each DC motor a H-bridge was required but I had none on hand. However it turns out a H … Continue reading →

Posted in A Reprap Project | Tagged , , , | 1 Comment

Making endstops from printer photo interrupters.

Posted on November 24, 2010 by Richard

If you have pulled apart a printer, fax or scanner then there is a high likelihood that you have found a few photo interrupters. Some of these may be pre-packaged in a plastic housing with three wires attached which you can modify to use … Continue reading →

Posted in Mendel Build | Tagged , , , , , , | 8 Comments

Arduino Mega & a character LCD.

Posted on August 13, 2010 by Richard

Still playing with my new toy, the Arduino Mega, this time with an character LCD with a parallel interface. The LCD I had laying around but you can buy them pretty much anywhere at low cost. I used this guide … Continue reading →

Posted in A Reprap Project | Tagged , , , , , | 1 Comment