BME280 sensor humidity always 0

[espruino-discuss2]

Posted at 2020-05-11 by Peter_Bernscheider

I use a BME280 sensor connected to my MDBT42Q . Temperature and pressure measurement is working fine, but humidity is always 0.

In contrast bme.hum_raw is greater 0, at my place currently 35406. Could there be a problem with the calibration function implementation in bme.js?
Thanks, Peter

[gfwilliams]

Posted at 2020-05-12 by @gfwilliams

It could be there's an issue I guess. Does bme.dH appear to contain nonzero numbers?

Also, are you certain you have a BME280 sensor, and not a BMP280? I believe they are basically identical apart from the lack of humidity in the P

[espruino-discuss2]

Posted at 2020-05-13 by Peter_Bernscheider

bme.dH is [ undefined, 0, 0, 0, 0, 0, 0 ].

As you are asking: In fact I´m not 100% sure, that I have a BME280. The breakout board has both labels: BMP280 and BME280. But you may be right, that in fact it´s only a BMP280.

Thanks for the hint!