I have rasp 3 and a new picamera.
When i was checking the video, I get the green tint. I tried things like reconnecting the hardware well but no got change.
please help
Raspberry pi3 is compatible with picamera V2 . The tint didnt show up when the V2 cam was used.
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I am using npyscreen on a Raspberry Pi 4. The RPi has a touch screen.
When using the standard npyscreen forms, the OK/Cancel buttons respond to the keyboard keys (tab/enter) but don't respond to touch (I didn't try with a mouse)
Is there a way to make 'touch' work on the Raspberry Pi? Maybe a couple of configuration settings on the RPi itself?
lcd and fan use the same pin, how can i use two devices at the same time?
It isn't necessary to use 2 devices on Pi's pin 6(Ground). There is 7 more Ground pins. Just connect black wire to of other pins.
In the image yellow mark is the conflict pin and the red cicles are alternatives.
I am trying to view a video via CVLC on a raspberry pi zero by using this command...
cvlc --no-osd --video-filter=adjust --brightness=2.0 /mnt/flash-drive/16-16-05.mp4
The video plays without any issues when i leave out the "--video-filter=adjust --brightness=2.0" section.
But when i add that section VLC does not show the video.
I looked around on the web on how to adjust image settings like brightness and contrast from command line and that seems to be the way , i just don't understand why it doesn't work on the raspberry pi zero.
Any idea why that doesn't work ?
EDIT :
This function is not supported on the raspberry pi because of its hardware acceleration.
This function is not supported on the raspberry pi because of its hardware acceleration.
VLC BUG REPORT WEBSITE
As demoed here Can't succeed in making transparent window in Electron (javascript), I manage to run the hello world application on a debian buster with background transparency.
However, when I try this demo on a raspberry pi 4 (raspbian desktop), it doesn't work out of the box. I read here https://ourcodeworld.com/articles/read/315/how-to-create-a-transparent-window-with-electron-framework that it could be caused by some driver bugs.
Can someone help me understand the issue with more depth ?
The need in my project is to display an HD video in the background and a few buttons in the foreground. Chromium-browser does not benefit as much from the hardware acceleration as omxplayer does (and drops frames), so I'm trying not to embed the video in the browser. Instead, I plan to have the smooth omxplayer run in the background and display an electron app with transparency.
(Pi 4B)
Doing some looking into openbox, the docs here say that you can use:
xcompmgr -c -t-5 -l-5 -r4.2 -o.55 &
I tested it, and it works with the parameters specified here. You can set the xcompmgr command to run in an autostart file when X initializes.
EDIT: In my testing, the latest electron build where transparency works correctly is electron#9.2.1.
I installed a 5 inch raspberry pi touch screen driver and it work well. Now I need to disable the screen and use the spi in an RFID code.
I need a method to disable the screen and clear the gpio pins.
I tried to use
disable_touchscreen=1
but nothing happens.
Then I tried
Xinput and disable the screen, the touch stopped but the pins didn't cleared .