Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Example 4 sometimes returns negative values for UV index values #2

Open
mhord opened this issue May 25, 2018 · 3 comments
Open

Example 4 sometimes returns negative values for UV index values #2

mhord opened this issue May 25, 2018 · 3 comments

Comments

@mhord
Copy link

mhord commented May 25, 2018

When light level is intense enough, UV index values are negative. This happens with indoor LED lighting.
@jimblom
Copy link
Contributor

jimblom commented Jun 4, 2018

This probably means the A, B, C, and/or D coefficients probably need to be decreased. It would be nice if the example/library automatically re-calculated these if the value goes negative. May be tough to do without knowing the amount of IR component in the source light, but I'll play around with it.

@Avamander
Copy link

Avamander commented Jul 5, 2018 •
edited
Loading

I noticed this too, too much infrared/light and the values go negative. This is especially bad when the sensor is covered by something that absorbs some amount of UV.

@aaz260
Copy link

aaz260 commented Oct 5, 2019

Just checking to see if anyone resolved the UV Sensor values going negative issue?

@bootchk bootchk mentioned this issue Apr 16, 2020
Open
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
4 participants
@jimblom @mhord @Avamander @aaz260