All the tests and codes used were done with Arduino and Arduino IDE 1.0.3.

This is a experiment about a 2 wire latched shift register driver. Latched shift registers usually needs 3 signal wires to work. In this post I will show how to drive such a shift register using a propagation delay circuit made out from discrete parts, in this case 3 transistors and 5 resistors. With this setup you can save one microcontroller pin.

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This is the first post. Lets see how nice I can make this blog going.