I2C expander with MCP23017

by dimonic.
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2 layer board of 1.90x0.95 inches (48.23x24.21 mm).
Shared on August 30th, 2014 14:24.

Use I2C to drive 16x2 LCD, optional RGB backlight, PWM. Uses SOIC chips for small footprint. All circuit and layout by J Echavarria.

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