Flowing LED on RaspberryPi using Python. In this article will make a flowing LED strip flowing in both directions using Python.

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How to make a LED blinking on Raspberry Pi using Java. Simple sample code using pi4j library.

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How to make a LED blinking on Raspberry Pi using Python. Simple Python code sample.

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Junit 3 vs Junit 4 Comparison. Junit 4 is introducing new features like annotations, static import, timeout.

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This tutorial presents log4j 1.2.x basic examples. How to log a message and an exception.

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Log4j Logging Levels explained. For the standard levels, this is the order: ALL

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