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The text in the Hookup Guide says:
INT pin - The APDS-9301 can be programmed to generate an interrupt under certain conditions. This pin will be asserted high when those conditions are met.
However, the bar over INT is conventionally used to indicate that the signal is ACTIVE LOW, meaning that it’s LOW when it is asserted and HIGH when it is not asserted.
Checking the datasheet, I find
The interrupt is active-low and remains asserted until cleared by writing the
COMMAND register with the CLEAR bit set.
I recall a time (decades ago) when I was confused by something similar, so I’m sure there are people just getting into electronics who will be confused if it doesn’t get corrected.
I’ll fix that. Thanks for letting us know!
The tutorial states: “this value is only accurate to within 35%-40% of the actual absolute lux value.” Do you know what the repeatability error is? That is, for the same light level, how much will the lux value change from reading to reading?
If you've found a bug or have other constructive feedback for our tutorial authors, please send us your feedback!
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