Category Archives: Uncategorized

Driving a 48-Segment RGB LED Bar Graph with a Teensy 3.2

In my post Driving a SparkFun 48-Segment RGB LED Bar Graph, I stated that the hardware built there could be used to drive the LED bar graph with any combination of hardware and software that could drive one of the … Continue reading

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My Net Neutrality Comments for Proceeding 17-108

I finished writing my comments to the FCC on net neutrality and Title II classification. In summary, I fully support maintaining the existing Title II classification and using that classification to enforce the existing net neutrality rules. Click through to … Continue reading

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Hacking Allen Bradley Cluster Pilot Lights

I was recently working on a project and wanted to incorporate one of Allen Bradley’s four-position, four-color cluster pilot lights into the project. A quick search of eBay found several lights with the lens colors I wanted but not at … Continue reading

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Driving a SparkFun 48-Segment RGB LED Bar Graph

I recently picked up a 48-segment RGB LED bar graph from SparkFun. The bar graph’s 144 LEDs are arranged in a common-anode matrix of 16 x 9 LEDs. I was hoping to drive the display with something like a Maxim … Continue reading

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