Monthly Archives: June 2013

Introducing Abella

Sound and light!


Here is some footage from early hardware development of “Abella,” my Arduino-powered electronic instrument. Yes, it is in a shoebox, and yes, the control knobs are popped through the cardboard. Continue reading

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USB car charger, 2A

The more I’ve learned about switch-mode power supplies, the more amazing it seems to me.  So a voltage source across a wide range of values can be converted into another voltage, just by pulsing current though an inductor.  Of course, switch-mode power supplies are even easier to set up with ICs like this one:

IC REG BUCK BOOST, 296-17764-5-ND

20130624_165324 20130624_180055 Continue reading

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