Re: tuning step size for the SI5351 / Radunio version
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Sent from an iPhone, don't ask whose.
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On Dec 26, 2016, at 8:58 PM, Joel Caulkins caulktel@... [BITX20] < BITX20@...> wrote: When the ADC is set to 5V full scale the reference is the 5V ADC supply line so it is ratiometric, meaning the ADC reading (in this case) is independent of the absolute supply voltage (noise is another matter).?
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I'm using the 5V supply from the Nano but they sometimes are lower like 4.7, so I thought that might affect the upper end. I have not measured it yet, I will do that tomorrow. I do have .1mfd cap soldered across ground and the wiper. If all else fails I will change the values in the Sketch. Thanks.
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