Raspberry Pi Forums

Hi,

I am looking for a simple (hopefully!) solution to duplicating screen content from one Pi to another.

To explain I have room(A) which contains Pi(A) and a connected monitor via HDMI.

I then have room(B) which has another monitor (could also have another Pi if required)

I want the same screen content to play in room(b) as is playing in the monitor on room(A)

I want to avoid using VNC as I already use this to connect to the Pi in room(A) from another PC and will probably this would mean 2 inbound connections to Pi(A) which I would prefer to avoid.

Running an HDMI splitter and an HDMI cable to monitor B is not an option due to the layout of the two rooms.

I have read a bit about screencasting and it looks difficult (maybe even impossible...)

The other posts I have read all seem to be about extending screens which is "slightly" different than what I am looking for as essentially I just want a duplicate the content on monitor(A).

I guess I am looking for something that will send the image over the air. The image does not need to HD its just a timer with some text that changes occasionally.

Does anyone have a solution that might work or can point me in the right direction, I am not adverse to more hardware/cost within reason, just need something as easy as possible to setup and reliable.

Thanks

Only non-vnc type solution is wireless HDMI video sender but they are very expensive

(If your monitors both take composite video and you don't mind a loss in quality then you could use a much cheaper non-HD wireless sender)

netrack wrote: ↑

Fri Feb 02, 2018 11:17 am

...
what I am looking for as essentially I just want a duplicate the content on monitor(A).
...
I am not adverse to more hardware/cost within reason, just need something as easy as possible to setup and reliable.
...

• have another Pi with network connectivity at 2nd monitor
• have script with endless loop on 1st Pi doing "cp /dev/fb0 somewhere; scp somewhere pi@2ndpi:"
• have script with endless loop on 2nd Pi doing "cp ~/somewhere /dev/fb0"

This works if dimensions of /dev/fb0 framebuffers are identical.