Explore, Create, Learn and Teach

Archive for November, 2011

Tutorial – Measure Voltage Across a Potentiometer

This tutorial demonstrates how to measure voltage across a potentiometer.  The concepts explained in this tutorial can be used to create position feedback sensors and contrast/brightness control for Liquid Crystal Displays.  Check out the tutorial for full details.

Tutorial – Use a Light Dependent Resistor (LDR) to Measure Light Levels

This tutorial demonstrates using a Light Dependent Resistor (LDR) to vary the blink rate of a LED based on the level of light striking the LDR.  This tutorial covers some basic concepts that can be used to develop home automation applications such as automatic light dimmers, automatic blinds or curtains and a automatic night-light.  Check… Read More ›

Gallery – Hobbyduino XBee Plug V1.0

I’m pretty sure the majority of my projects will never be considered “Complete” as I’m always tinkering with the firmware to add or refine features.  However, I like to give my projects a finished look which means they will be inside of enclosures or integrated into other devices.  It would be nice if I could… Read More ›

Tutorial – Wireless Arduino Programming

This tutorial demonstrates uploading sketches to an Arduino over a wireless connection.  I designed a couple of XBee adapter boards for my Hobbyduino V3 (Arduino clone).  These adapters made it easy to properly configure each of the XBee Series 1 modems used in the tutorial.  Check out the tutorial for full details.

Gallery – Hobbybotics CNZ1120 Photo Interrupter V2.0

I updated the CNZ1120 Photo Interrupter board to version 2.0.  Check out the gallery here.

Projects – Hobbybotics CNZ1120 Photo Interrupter V2.0

I updated the CNZ1120 Photo Interrupter board to version 2.0.  The new board is smaller and uses SMD components (only two resistors).  Check it out here.

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