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Pi IoT
Forum Sense Hat Environmental Sensors
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  • State Verified Answer
  • Replies 6 replies
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  • Views 1346 views
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  • pi 3
  • sense hat
Related

Sense Hat Environmental Sensors

vish
vish over 9 years ago

Hi,

I received my package today and was testing Sense Hat. I wrote a small script to log the values to screen.

# Test for environmental sensors

from sense_hat import SenseHat
from time import sleep

sh = SenseHat()

try:
    while True:
        t = sh.get_temperature()
        p = sh.get_pressure()
        h = sh.get_humidity()

        t = round( t, 1 )
        p = round( p, 1 )
        h = round( h, 1 )

        print( "Temp = %s    Prsr = %s    Hmdt = %s" %(t,p,h) )
        sleep( 1 )

except KeyboardInterrupt:
    print( "Exiting..." );

 

But I am getting negative values for temperature and humidity.

Temp = -422.2
Prsr = 1008.2
Hmdt = -39.8
Temp = -422.6
Prsr = 1008.2
Hmdt = -39.8
Temp = -421.5
Prsr = 1008.2
Hmdt = -39.7
Temp = -422.0
Prsr = 1008.2
Hmdt = -39.8
Temp = -422.1
Prsr = 1008.2
Hmdt = -39.8
Temp = -422.0
Prsr = 1008.2
Hmdt = -39.8
Temp = -422.0
Prsr = 1008.2
Hmdt = -39.8
Temp = -422.1
Prsr = 1008.2
Hmdt = -39.8
Temp = -422.1
Prsr = 1008.2
Hmdt = -39.8
Temp = -422.1
Prsr = 1008.2
Hmdt = -39.8
Temp = -422.1
Prsr = 1008.2
Hmdt = -39.8

 

Can anyone tell me what is it I'm doing wrong?

 

Thanks,

vish

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  • fvan
    fvan over 9 years ago +1 verified
    According to https://www.raspberrypi.org/forums/viewtopic.php?f=104&t=148103&start=50 it is most likely a HW issue. I'll check mine later today ... Frederick Edit: Quickly plugged it in and copy/pasted…
  • fvan
    fvan over 9 years ago +1 suggested
    Confirmed as HW issue on RPi forums. Some distributors may have stock of faulty units, so that's what we're probably suffering from ... element14Dave https://www.raspberrypi.org/forums/viewtopic.php?f…
Parents
  • carmelito
    0 carmelito over 9 years ago

    element14Dave , fvan and vish - look like the sense hat is behaving erratically for me as well image..

    Here is screenshot, running vish  sample code above..image

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  • carmelito
    0 carmelito over 9 years ago

    element14Dave , fvan and vish - look like the sense hat is behaving erratically for me as well image..

    Here is screenshot, running vish  sample code above..image

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