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astro-pi / python-sense-hat

Source code for Sense HAT Python library
https://sense-hat.readthedocs.io/en/latest/
BSD 3-Clause "New" or "Revised" License
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Sense Hat V2: Colour sensor not detected on raspberry Pi 5 #143

Open ZGMFX20AR opened 6 months ago

ZGMFX20AR commented 6 months ago

Hello, I'm experiencing an issue with the Sense HAT v2 on the Raspberry Pi 5.

When executing the i2cdetect -y 1 command on the Pi 5, it successfully detects all sensors except for the color sensor.

Conversely, on the Pi 4, the command detects all sensors including the color sensor, which has an I2C address of 0x29.

XECDesign commented 5 months ago

Are you using the same Sense HAT in both cases? I think newer Sense HATs have the colour sensor on 0x39. Tested on a pi5 here and the output was as expected.

yupm commented 4 months ago

I think the library or package (for ubuntu?) might not be updated in this case.

from sense_hat import SenseHat
from time import sleep

sense = SenseHat()
sense.color.gain = 60
sense.color.integration_cycles = 64

while True:
    sleep(2 * sense.colour.integration_time)
    red, green, blue, clear = sense.colour.colour # readings scaled to 0-256
    print(f"R: {red}, G: {green}, B: {blue}, C: {clear}")

Error:

Traceback (most recent call last):
  File "/home/piuser/csense.py", line 5, in <module>
    sense.color.gain = 60
    ^^^^^^^^^^^
AttributeError: 'SenseHat' object has no attribute 'color'

Tested on Ubuntu 24.04

bsimmo commented 4 months ago

Spell it correctly and it should work?

colour

You have it correct later.

yupm commented 4 months ago

Erm... the official documentation is using color though https://projects.raspberrypi.org/en/projects/getting-started-with-the-sense-hat/7 image

Anyway I managed to fix it by just using Rasbian as the default OS. After setting up Ubuntu via docker and fooling around with building this repo and the RTIMU repo from source, I am thinking the Ubuntu 24.04 issue might be a result of outdated packages in the repo..

bsimmo commented 4 months ago

They must have changed it at some point, it never used to work. At least I don't think it did.

Anyway, glad it working.

For the record, it's not Raspbian, it is RaspberryPi OS. It would be better to call it Debian as it's not using Raspbian any more. (see history in some old blog, also Raspbian was 32bit only).

On Sun, 5 May 2024, 11:16 pm yupm, @.***> wrote:

Erm... the official documentation is using color though

https://projects.raspberrypi.org/en/projects/getting-started-with-the-sense-hat/7 image.png (view on web) https://github.com/astro-pi/python-sense-hat/assets/35495603/5a030c2f-c236-4b08-ba17-5fc54fd7178c

Anyway I managed to fix it by just using Rasbian as the default OS. After setting up Ubuntu via docker and fooling around with building this repo and the RTIMU repo from source, I am thinking the Ubuntu 24.04 issue might be a result of outdated packages in the repo..

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bsimmo commented 4 months ago

It's seems it was 4 years ago they added color as spelling :-)