https://mods.factorio.com/mod/SchallChunkAlignment

What exactly is not working? Please share an error message or screenshot. I can't reproduce it by just loading both mods.

Schall Chunk Alignment (1.1.0)

Error while running event SchallChunkAlignment::on_player_cursor_stack_changed (ID 30)
There is no valid object with id 1.
stack traceback:
[C]: in function 'set_visible'
SchallChunkAlignment/lib/CArender.lua:86: in function 'grids_hide'
SchallChunkAlignment/lib/CArender.lua:152: in function 'check_cursor_stack_changed'
SchallChunkAlignment/control.lua:58: in function <SchallChunkAlignment/control.lua:56>

Please try version 0.1.1, I have fixed it - hopefully

good job，thanks
Can I show the signal without holding it in my hand?
：）

You mean like always showing the arrows, or additionally when you hold rails in your hand, or add a toggle or add a tool with which you can select an area to show, ...

I tried to keep it simple for the first version. Would be great if you describe in more detail what you want changed and why.

What I mean is that I don't need to hold the light in my hand to display it.
Or move the mouse over the light and it will show.