Light Seeking Robot, version 2

This is an improved version of my first Light Seeking Robot.

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Attempts to control an LCD using Arduino and a shift register (failed) and I/O expander (succeeded).

I’ve been attempting to control an LCD using my brand new Arduino and a 74HC595N shift register, in which I failed (for now). I also tried the MCP23016 pin expander, which I got working after quite some experimentation. I even wrote a library for it!

Read more to see how I did it.

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Arduino First – Light Seeking ‘Robot’

To get me started, both on this blog and with my brand new Arduino Uno, I’ve built this Light Seeking Robot and I have documented it here for your entertainment.

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