This isn’t just an Arduino powering a DAC, it’s a function generator in a chip, the Arduino is only operating it’s controls. Report comment. Reply. Luke says: September 3, 2018 at 2:45 pm ...

Features of the DIY function generator Arduino project include: – Fully digital control : No need for passive analog components, which simplifies the design and enhances reliability.

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I don’t use Arduino IDE much, but that’s my thoughts exactly. And even if it is in runtime, does the “verifications” -whatever they may be- repeat EVERY invocation of digitalWrite ()…?