You need at least three hands for soldering. :-) You should verify that you haven't created a shortcut between two of the pins.
Yes, -python3.8-smbus.tcz- is the correct extension. If there are not shortcuts then we can search step by step for the failure. 1) The kernel module -i2c_dev- is loaded? You can check if the command was successful with $ lsmod | grep i2c One line of the output should start with i2c_dev: i2c_dev 20480 2 2) The Python script should be executable. You can verify it with the command "ls -l": tc@SB-Kitchen:~/lux$ ls -l display-control.py -rwxr-xr-x 1 tc staff 4261 Mar 19 21:40 display-control.py Important are the three 'x' for executable. If they are missing then you can change it with $ chmod 755 display-control.sh 3) Verify that the script measuring something. The script is able to print the measuring results to stdout (i.e. your command line). To enable this feature, you need to edit the script. Change line 21 from DEBUG = False to DEBUG = True If the script is still running in the background then we have to stop it. $ ps -ef | grep display root 6647 6414 0 21:40 pts/0 00:00:00 /usr/local/bin/python3 /home/tc/lux/display-control.py tc 7400 6414 0 21:53 pts/0 00:00:00 grep display in this case, 6647 is the PID of the process 'display-control.py'. You will get a different number.To stop the script, you need to kill the process with 'sudo kill <PID>. In my case: $ sudo kill 6647 Now we execute the script manually: $ ./display-control.py You should get output similar to the following (I used a electric torch so that some values are extremely high): Light Level : 25.00 lx Display: 18 Light Level : 29.17 lx Display: 19 Light Level : 450.00 lx Display: 121 Light Level : 466.67 lx Display: 125 Light Level : 2408.33 lx Display: 255 Light Level : 16787.50 lx Display: 255 Light Level : 29.17 lx Display: 19 Light Level : 0.00 lx Display: 11 4) Are you able to write to the file '/sys/class/backlight/rpi_backlight/brightness'. You can check it these two commands: $ echo 60 > /sys/class/backlight/rpi_backlight/brightness and $ cat /sys/class/backlight/rpi_backlight/brightness 60 The first command should be executed without an error message and the second should return value that you wrote into the file (in this case 60). So, let's see how far you get with your tests. ------------------------------------------------------------------------ jd68's Profile: http://forums.slimdevices.com/member.php?userid=30795 View this thread: http://forums.slimdevices.com/showthread.php?t=112460 _______________________________________________ unix mailing list unix@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/unix
