Quote:
Originally Posted by Quoth
I'm sure it could be done today. The foot-pedal is easy, but having it wired rather than BT is harder.
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Actually, wired USB would be easier, a piece of cake.
Most (all?) stock Bluetooth firmware is designed to only connect to one thing at a time.
You'd have to do a bunch of work to have some Bluetooth hardware to connect to two things at a time.
Obviously two separate Bluetooth modules working in synchrony would be simple enough.
The same goes for a foot pedal controlling two USB peripherals.
But operationally, this leaves a lot to desire.
If you have the same music loaded on both devices and you don't screw up, yeah, it will work fine.
If you forget what you're doing and turn the page by hand on one monitor you'll get out of sync and lose your mind.
No, the best way is to use a small computer with two video outputs and two (presumably Eink) displays.
That way you always have just one music file and the coordination of the two displays is controlled.
If they were not Eink displays but IPS/LCD/OLED, you might even have the pages "slide" over.
It's not easy to say how well that would work until you try it.
It might make it less confusing than having everything change at once or it might just be annoying.
OTOH, if you were using a non-Eink display, just put in a single large display.
A Raspberry Pi 4 has two HDMI outputs and costs less than $100.
That's chump change compared to two large Eink displays.