I have just completed the 8x8 Matrix project from the EarthshineElectronics guide. It uses 2x 74HC595's to drive a 8x8 matrix, 1 row at a time. I'm using a USB powered UNO. It works fine, except the rows that have 5 LED's on, will appear dimmer than a row that has 1 LED on - I'm not surprised in a …

8x8 Matrix, Rows with more light LEDs are dimmer

runaway_pancake February 10, 2012, 1:35am 3

Can you provide a link to the project?

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