Category Archives: Micro & Hardware

Microcontrollers, electronics, etc.

5V to 3.3V Logic Level Shifting Stragety Notes

Posted on 12 March 2013 by James Reuben Knowles

Notes on 5V to 3.3V level shifting techniques. Continue reading →

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Installing Rigol DS 1052E Ultrascope Software on Windows 7

Posted on 12 March 2013 by James Reuben Knowles

Brief notes on getting Windows 7 to talk to a Rigol DS 1052E oscilloscope. Continue reading →

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Component Testing with an Oscilloscope

Posted on 12 March 2013 by James Reuben Knowles

A nice short video introducing component testing with an oscilloscope (an “octopus”).

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Effects of Varying I²C Pull-Up Resistors

Posted on 16 February 2013 by James Reuben Knowles

A link to an article entitled Effects of Varying I²C Pull-Up Resistors, which includes the Arduino internal pull-up resistors. Continue reading →

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Communication Between Arduinos Using I²C

Posted on 14 February 2013 by James Reuben Knowles

How to use I²C for communication between two Arduinos. Continue reading →

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Adafruit Motor Shield

Posted on 11 November 2012 by James Reuben Knowles

Using the Adafruit motor shield kit. Continue reading →

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Hallowe’en Eyes

Posted on 31 October 2012 by James Reuben Knowles

A blinking light display for Hallowe’en. Continue reading →

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Including Libraries in the Arduino IDE

Posted on 24 October 2012 by James Reuben Knowles

Any Arduino libraries that are needed by the files outside of the sketch (.ino) file must also be listed in the sketch file itself. Continue reading →

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C++ Polymorphism vs. Arduino

Posted on 22 October 2012 by James Reuben Knowles

For polymorphism to work in C++, you have to pass pointers to class instances, not references. Continue reading →

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Multiple Source Files with the Arduino IDE

Posted on 20 October 2012 by James Reuben Knowles

How to use multiple files in an Arduino sketch. Continue reading →

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