So I programmed a 6 digit display using a MAX7219. Everything works great until I get it off my bench and into the project. Quick setup, when powered on the display starts scrolling numbers. Problem, when power is applied, nothing happens. Until I press the reset button on the board, then it works g…

Arduino + Max7219 only works if...

MarkT March 29, 2012, 1:55am 2

How is the stand-alone circuit powered - and how is the reset line connected?

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