@Sparkletron wrote:
Measuring a nominal 12V battery, I’m reading 14.60. But the Automation HAT returns 14.46. No problem with precision; the measurements are reasonably consistent. But that lack of accuracy is disconcerting given that this is a 12-bit ADC with enough resolution to handle two significant digits. Even if I were to round 14.46 up to 1 sig, that’s still 14.5 and not 14.6.
Currently I’m compensating by simply adding 0.14 to the measurements. But can anyone with ADC experience chime in? That ADS1015 ADC has all kinds of features not exposed in the Python API. Perhaps more advanced calibration is one of them?
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