Author Archives: M. Eric Carr

Resistive Security Loops

Posted on 2014-07-30 by M. Eric Carr

Incorporating a resistor into a security system loop circuit can make it a lot harder to spoof — provided it’s done correctly. Continue reading →

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CNC Etch-A-Sketch

Posted on 2014-06-29 by M. Eric Carr

An Arduino and Adafruit Motor Shield are used to automate Etch-A-Sketch drawings. Source code provided. Continue reading →

Posted in Arduino, C, Coding, Digital, Nostalgia, Toys | Tagged , , , , , | Leave a comment

Components: LEDs

Posted on 2014-05-30 by M. Eric Carr

LEDs are useful devices. They require a bit more thought to use than indicator lamps, but are very versatile and efficient. Continue reading →

Posted in Building blocks, Components, Electronics, Fundamentals, HOW-TO | Tagged , , , , , , , , , | Leave a comment

Using a 16×2 LCD display

Posted on 2014-04-30 by M. Eric Carr

16×2 text LCDs are useful microcontroller peripherals. Here is how to connect and use them. Continue reading →

Posted in Arduino, Building blocks, Digital, Electronics, HOW-TO, PIC Microcontrollers | Tagged , , , , , , , , , | Leave a comment