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Ok.
What I found is RPi.GPIO
From your post I figure it out that I need to test GPIO23, which is pin 16.
Code:
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BOARD)
GPIO.setup(16, GPIO.OUT)
for i in range(20):
GPIO.output(16,True)
time.sleep(1)
GPIO.output(16,False)
time.sleep(1)
GPIO.cleanup()
And there's no sound. So I'm doing something wrong, or relay doesn't click.
Tried GPIO.BCM as well with pin 23. Same result.
(13.04.2020, 20:36)harryberlin schrieb: [ -> ]sorry gpio for rearcam is 27
python rpi gpio is not installed . you should get an exception.
check this:
https://raspberry-projects.com/pi/comman...mmand-line
and add 'sudo' as prefix to the commands
example: sudo echo "27" > /sys/class/gpio/export
Ok. Will try tomorrow. It's dark already and laptop needs to be charged.
I installed rpi.gpio, wanted to install wiringpi, but git is down for it.
There's warning that GPIO23 is in use and still continues. So I think rpi.gpio works ok.
And I used that script with sudo. I have some experience with linux as I work in IT. Just never worked with RPi more than making it to show ads on TV at work
So there's no clicking.
used your link with those commands. Checked that value changes from 0 to 1 and back.
And there's no sound.
I could export gpio27 without sudo, but to write values I were forced to use sudo. Otherwise I would get permission denied.
can you use a voltmeter to check the signal?
Only if you will show where to measure. Because I don't have idea where to check it.
GPIO to GND should have 3.3V at state 1
So what should I do is remove pibus, take rpi and measure that GPIO27 pin at state 1?
yes.
otherwise try to get usual pibus program get working. to be sure it's not an addon topic.
(16.04.2020, 20:10)harryberlin schrieb: [ -> ]yes.
otherwise try to get usual pibus program get working. to be sure it's not an addon topic.
Can't find my voltmeter. Need to buy new one.
But in that time I noticed that in settings under Rear Cam it says GPIO something and default value is 5. Is this correct?
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