i8

AD8403

We might use the AD8403 instead of the AD5254 in order to benefit from the SPI interface, which is supported by the Raspberry Pi 2. This would make it very easy to drive 32 daisy-chained quad digital potentiometers, which will be needed to patch the 16 soft knobs to the 8 polyphonic channels, all through a single SPI controller.

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