It took quite some doing to get easy to use PWM control working with the 595 shift registers. I figured I'd pass along a slimmed down version of the application that just implements the PWM control via a timer1 process. The idea is to add "pwm pins" using daisy chained 595s and then to be able to u…

Software PWM using daisy chained 74HC595s / SPI

raron July 7, 2010, 5:39pm 2

Nice work!

It might be helpful to link to the library used too? Arduino Playground - Timer1
I haven't tested this, but at least it compiles now

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