I thought I'd make a new topic, as my last one got messy. I have decided to use a true D/A converter to convert my Arduino's PWM output to analog, rather than the low-pass filter I already have set up. But I am not sure how to go about using it, as the one I have ordered uses SPI... and my Ethernet…

[Solved] Using a DAC (MCP4911) instead of a low-pass filter

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