April 26, 2015

Alex and I finished a "home made" LED bulb today. Lots of soldering. It has 38 LEDs in series and so requires ~160 volts DC. It uses a simple bridge rectifier made of 4 diodes to convert the AC to DC. A few resistors and two capacitors round out the power supply.

April 25, 2015

We went to the Houston Symphony's School House Rock concert.

April 20, 2015

We recently finished Alex's robot art, where we prototyped a circuit and then committed it with PCBs, wire, resistors, solder, and lots of hot glue.

April 10, 2015

April 7, 2015

April 6, 2015

April 4, 2015

April 3, 2015

Alex teaching Grandma and Grandpa how to use an Arduino microcontroller with a 16x2 LCD display.

March 27, 2015

March 22, 2015

Alex's first soldering project. We split duties on the soldering. He soldered about half of the connections.

March 15, 2015

Alex got a little bits synth kit yesterday.

Teaching Alex how to solder.

February 28, 2015

February 27, 2015

February 26, 2015

January 12, 2015

Alex taking apart a used vacuum bought at Goodwill -- bought for the purpose of taking apart.

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