GPIO output on RPI5 not working
December 18, 2023, 19:49
I've been trying to connect and control an LED on a new raspberry PI 5 using GPIO and a breadboard. I connected the LED with a 220Ω resistor and I'm quite sure it's not burnt, connecting it to a 5V or 3.3V pin lights it up properly. When I try to connect it to a GPIO pin, it's either preset to either high or low and stuck there, no matter what. I tried using the gpiod package on python3, some libraries in rust, and the gpioset command on the command line, using gpioinfo and gpiofind to find the correct pin numbers. I also checked to make sure I have the correct permissions, and ran those with sudo. The LED stays on or off no matter what. In GPIO18 for example it was consistently off, in GPIO21 it was consistently on. I can't fathom what I'm doing wrong.
try gpiozero, its so much easier to use
then tell me what script your using
I'm pretty positive I tried that library too
do you have remote gpio on? i remember someone else had this problem
I went on raspi-config and I turned it off, but no difference
Do you have the code?
attempt 1:
python
import gpiod
import time
LED_PIN = 17
chip = gpiod.Chip('gpiochip4')
led_line = chip.get_line(LED_PIN)
led_line.request(consumer="LED", type=gpiod.LINE_REQ_DIR_OUT)
try:
while True:
led_line.set_value(1)
time.sleep(1)
led_line.set_value(0)
time.sleep(1)
finally:
led_line.release()
attempt 2:
python
from gpiozero import LED
from time import sleep
led = LED(17)
while True:
led.on()
print("change")
sleep(1)
led.off()
print("change")
sleep(1)
And this is my wiring. The LED stays on for the whole time, even when I run the python files
Does the print statement show up?
Yes, it does
Hmm... Sorry, I don't have a clue. The code looks correct to me, and the print statement proved the loop is running. I best guess is there is some setting somewhere that needs to be tweaked...
I just bought my first raspberry, if it's faulty I'm in deep shit XD
I'm not too familar with python programming. But just want to make sure sleep(1) is one second?
Yes, it is
Another possibility is that the GPIO packages don't support pi 5 yet...?
The tutorials online suggest those python packages. I also tried using gpioset. Everything came preinstalled in raspberry pi OS
yeah. I was looking at gpiod package. It looks like it supports pi 5
here is a tutorial, https://www.tomshardware.com/how-to/control-raspberry-pi-5-gpio-with-python-3 looks like you are following it
Yep, that's exactly the tutorial I'm following
I noticed you are using an adapter instead of directly connecting it to pi 5. Maybe the adapter is designed for a different pi version, and the pins may not reflect the new pinouts?
Try connect the led directly to the pi, if you can
I tried connecting directly too. It made no difference
I was at a workshop in my university trying all those things. Everybody got an rPI 4 so they kinda left me behind
can you double check? https://vilros.com/pages/raspberry-pi-5-pinout
Connect directly to GPIO 17 of the pi 5, and see if it works...
It's really easy to plug into the wrong pin. I have done this more than a few times and end up wasting a lot of time.
I'm pretty sure I connected correctly as you can see
Ah directly
Yup, the adapter could be lying to you
Fucking hell that adaptor was faulty indeed
You sir are an angel thank you
Glad I could help 😄
The adapter was probably for pi 4 or some older models, and has different pin outs