Posts by Mario77

Quote from satfan

It works ...! I `m so stupid... I shouldn't be counting pins at 2am at night ... Since I connected a fan to pin 4 and pin 6, I didn't see that I didn't connect pin1 and pin2. So I tried to make the connection between pins 7-8 instead of 5-6

Thx for your help !

By the way ... is it possible to reconnect the fan to a other Pin which is shut down if I´m in the shutdown mode ? Maybe I have to add something in that script.

Glad you r sorted...fan doesn't have to be full trottle...it should work fine on 3.3 just a little slower...or do what Da Flex recommended...you can also use same circuit for PWM Fan setup..works fine on RPI..

Quote from Da Flex

satfan The code looks OK, I'm using the same import. Maybe you are using wrong apostrophe signs at the sys.path.append line.

script seems to hang on line 4

import RPi.GPIO as GPIO

That shouldn t be on line 4 if you copied the script I showed you...looks like you r still loading your first script listen-for-shutdown.py without the rest

shutdown.sh can't see anything strange..

Remove all the sudo commands from install.sh script..

You need to install rpi tools addon from libreelec repo..

I m not really good with python but try this it should work.. for shutdown.py

#!/usr/bin/env python


import os
import signal
import sys
sys.path.append('/storage/.kodi/addons/virtual.rpi-tools/lib')
import RPi.GPIO as GPIO
import subprocess



GPIO.setmode(GPIO.BCM)
GPIO.setup(3, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.wait_for_edge(3, GPIO.FALLING)

subprocess.call(['shutdown', '-h', 'now'], shell=False)

Have a look here

Quote from RolandP

Hi,

coming back to the 4-wire fan with PWM:

I just connected the blue wire (pwm control wire) to GPIO18 (pin 12), set in the cooler.py script: GPIO.PWM(12, 25000) 12 for the pin and frequency to 25kHz and here we go: works like a charm -so far.

Thanks for your help.

Cheers

Roland

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You can set GPIO and Frequence variables here

# Configuration
FAN_PIN = 18  # BCM pin used to drive transistor's base
WAIT_TIME = 10  # [s] Time to wait between each refresh
FAN_MIN = 30  # [%] Fan minimum speed.
PWM_FREQ = 25000  # [Hz] 25kHz for Noctua PWM control

and leave this as is

fan = GPIO.PWM(FAN_PIN, PWM_FREQ)

You can also play with the temp and speed you need...

# Configurable temperature and fan speed steps
tempSteps = [30, 40, 45, 50, 55, 60, 65, 70, 75]  # [°C]
speedSteps = [0, 30, 35, 40, 60, 70, 80, 90, 100]  # [%]

this is what I m using

My fan only starts at 30% so anything lower then that it won't start

This is a small tool to change speed from SSH for testing before you set lowest speed in script..It lets you input different speed from SSH till your fan starts..

calibrate.py.txt

Quote from Dmitry

No, this script is enough for me, because the fan is quiet and rarely turns on.

Well if you got 1 working you can use any of the ones posted here...they should all technically work...you just replace the script.

Quote from Dmitry

Взаимодействие с другими людьми

It worked with the script from post #12.

Thank you.

Post #12 that is the service script...to start fan on boot...

So you still using the pwm script from latest post?

Quote from RolandP

Hi

The wiring is understood, no need for a Transistor or similar. The question is the 25 kHz. If I understood correctly, the 25 in the post you mentioned is Hz, not kHz.

Roland

It s hz not khz..that s what you need

Quote from Dmitry

Hi!

Yes, installed raspberry pi tools addon from libreelec repo

Yes, chmod 777 the run-fan.py script

І am run script from ssh directly to test...but fan does not work

but it gives me again error.

What have I done wrong?

Thank you!

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What error you get when you run script manually?..If I remember correctly you should connect pwm transistor base to gpio18 which is pin 12

Quote from Dmitry

Dear Mario77,

I did everything as written in post # 58, but it gives me this error:

Code

● run-fan.service - to control the fan based on temperature.   Loaded: loaded (/storage/.config/system.d/run-fan.service; enabled; vendor preset: disabled)   Active: activating (auto-restart) (Result: exit-code) since Sun 2021-01-03 20:43:25 UTC; 13s ago  Process: 842 ExecStart=/usr/bin/python /storage/.kodi/userdata/fan/run-fan.py (code=exited, status=1/FAILURE) Main PID: 842 (code=exited, status=1/FAILURE)

What have I done wrong?

Thank you!

Make sure

you installed raspberry pi tools addon from libreelec repo

chmod 777 the run-fan.py script

run dos2unix command on script

you can run script from ssh directly to test...fan should start

Quote from RolandP

Hi,

I would like to use a 4 wire fan (NF-A4x10 5V PWM) with pwm control. Do you think, the PWM frequency in the script could be set to 25kHz, which ist the required frequency for the PWM control?

Cheers

Roland

It's already set to 25 if you look at line 15 of last script in post #60..

Regarding your fan..I m not sure how you could connect it but having a look at it you might not need a transistor...

Might work if you connect black to ground,yellow to power and blue for PWM to GPIO here and here

Not tested so make your own research before you try

I m just using 2 wired 5v fans and controlled from a transistor..

For the record of this thread,

This is another script I found that uses PWM for RPI's

Been edited slightly to work with LibreElec.

Fan speed changes depending on Temp not just On and OFF..

You can set the speeds you want for the chosen Temperatures

fan.py.txt

Quote from jfabernathy

I have installed LE 9.2.3 on my RPi4 4GB and have added TVH server and Client. I've installed sd4tvh addon for Schedules Direct EPG.

I'm able to record programs from my HDHomerun Connect and the commercials are being flagged fine.

However, when I use the Kodi frontend to delete a recording, only the .ts file gets deleted. I'm left with the unneeded .txt, *.edl, *.vdr, *.log, and *.logo.txt.

Is there a way to have Kodi/TVH delete this files when the .ts file is deleted?

You can disable all that from your comskip.ini..

or you can create a post-remove command script and run when you delete a recording..

st

Quote from IanS

Hi. Thanks for the reply. Just so I'm clear, is that the Raspi's config file, which is somewhere on the SD card?

Yes it is...just pull your sd card and insert in pc....then add that line to config.txt

Although I have a setup similar to yours and don't have that issue you can add this line to config.txt to then set your display settings without monitor attached to hdmi...

hdmi_force_hotplug=1

Quote from zack

heya, thanks for this repo.

I'm new to retrogaming on LibreElec, so I'm a bit confused about the various options.

I've installed MAME 2003 Plus with the builtin libreelec libretro support and I've a bunch of ROMs I can play.

The only annoying thing for me is that I need to browse through them as .zip files.

I'd like to have a GUI ROM browser that shows game names, metadata, screeshots, etc.

What is the best way to achieve that?

Do I need this repo? Or is there a simpler add-on in the standard add-on market?

Thanks in advance,

Cheers

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Advanced Emulator Launcher and Retroarch from this Repo does what you want....

The fans should just switch on when your Pi is booted up...if they didn't they might be faulty..assuming that they are just normal fans with no circuit...

If you want to trigger the fans from script you ll need a transistor either way you go..both PWM or just ON/OFF depending on Temp...otherwise your other option is always ON..

It's not hard really to wire them..you don t even need solder if you r not good in soldering..just use DuPont connectors..

Here is all you need

Any success with this?

I v also been trying for a while but never succeeded..

I m just using autostart.sh to mount my sshfs server..

Quote from -=guybrush=-

Mario77

I've obviously read post #12 and I've also explained the reasons why I don't think it applies to my case. Thanks anyway.

EDIT: I need to apologize both with Mario77 and gedakc. Going into details, I've missed the most obvious thing: deinterlacing always happens, no matter if the contents are locally stored, internet based or broadcasted on DVB-T! Stupid me! Indeed I've choosen MMAL - BOB as the default deinterlacing method for all kind of videos selecting the gear icon from the OSD and now (but my testing has been very limited, only one minute of viewing; I would come back with the results of a more thorough use) HD contents seem fine with no need for buying any codec or else. Usually, they began to stutter immediately so it is at least a good sign!

Yeah that should solve your issue...I v been there few years ago playing around with BOB and same trick applies today