Beiträge von jwilsonredding

If you wired the power supplies to share a ground, when one power supply shuts down, the other would too, yeah?

If I power a nodemcu off my TV USB, and my 12v led light strip off a separate power supply, what will the LED strip do when the nodemcu loses power? Will they turn off, stay in their last known state?

See attached for my diagram,

Trying to utilize CEC client to turn on and off my LEDs with Standby CEC command via bash script created by user RaPiiDe:

I think my biggest challenge will be finding a splitter that sends CEC commends out more than 1 port.

But does this make sense, or am over complicating things?

#!/bin/bash


# Script for hyperion which allows you to turn off your LEDs when your AVR is off and vice versa.
# Tested with Raspian on an RPi3
# 1 - Plug your RPi with an HDMI cable on your AVR
# 2 - Copy the script on your RPi
# 3 - Run sudo chmod +x on the script
# 4 - To make it run at startup, add   @reboot /your/path/yourscriptname.sh    to crontab -e
# 5 - Enjoy


# RaPiiDe


remotePath="hyperion-remote"
isOn=-1


while :
do
        # We get the CEC status
        status=$(echo pow 0 | timeout 5 cec-client -d 1 -s)
        # If it's off and it wasn't already, let's turn off the LEDS
        if [[ "$status" == *"power status: standby"* ]] && [[ "$isOn" != "0" ]]
        then
                eval "$remotePath --priority 0 --color black"
                isOn=0
        # If it's on and it wasn't already, let's turn on the LEDS
        elif [[ "$status" == *"power status: on"* ]] && [[ "$isOn" != "1" ]]
        then
                eval "$remotePath --clearall"
                isOn=1
        fi


        sleep 2
done

Will CEC pass through a usb video grabber to the RPi?

Sorry to resurrect an old post, but I had a question about your physical setup.
My goal would be to plug my Roku Ultra Into my Denon AVR, into an HDMI splitter with CEC out both sides:

I found this one:

I want to run the onside to my TV, the other to the USB video grabber plugged into the raspberrypi which would have nodemcu or arduino for my led controller.

This is where I get confused, does CEC pass through the USB Video Grabber into the RaspberryPi?

Zitat von TPmodding

Yeah, Paulchen-Panther also noticed it, but sadly I didnt find a solution for this problem...will have a look later

What i have been doing is manually putting the post ID into the URL directly, its been working ok! just a little rough for us just starting out.

One thing I noticed is that links to the previous posts, from google or inside threads, will take the user to a 404 page.