3x3 LED matrix

170

02:31:36

LEDs selectable by row and column switches.

published 10 years ago

nerdgeek

10 years ago

This is a fun circuit to play with....nice design

bobo

10 years ago

Thanks. It shows with this setup, that if you only select Leds in a single column, the current ( and brightness ) is constant. But, if you select more than one LED in a row, they share the current and so will be dimmer.

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