Single LED Joule Thief Candle

…the thief said “Let there be light. Behold a single candle lit by the joules of a dead cell.”

There is something about LEDs and the joule thief circuit that keeps me coming back. This time around I went for something festive for the December holiday season along with a SMD transformer, no longer will I have to hand wind toroidal transformers.

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Multi-LED Joule Thief

I believe it is inevitable that most newcomers to electronics will at one point or another build a Joule Thief circuit. To me it is the hello world of circuits and was one of the first circuits I prototyped on a breadboard when I first started experimenting with electronics. This multi-LED PCB is a callback to those days, something I wanted to do the first time I laid out a hand wound transformer, transistor, and LED on a breadboard.

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Breakout the MSOP16

A few weeks ago I received an email from LT that was showcasing the LTC2946, a power monitoring IC that communicates using I2C. I was intrigued and ordered a couple, part number LTC2946CMS#PBF. This is the MSOP-16 package and I would need a breakout board so that I could play around with this chip on a breadboard and explore all of its functions. I looked at my normal sources for electronic goodies; Adafruit and Sparkfun had MSOP break out boards but they were all low pin count. I was able to find another source for a MSOP-16 breakout board but at ~$7 a piece plus shipping I knew I could have my own made much cheaper. On to KICAD.

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