[GraemeJ]

I'd never heard of the AB Shutter until I read this thread.  I did a little research and it seems that (for some users) this is a useful little toy and, obviously, a lot cheaper than any of the pedals out there.

However, my research revealed one thing that I thought would be highly likely - the device will go to sleep after a period of inactivity (90 seconds seems to be the figure concerned).  It's this sleep mode that has been the stumbling block for many of us that have tried to press BT mice and keyboards into use as an alternative to a 'proper' pedal as it can cause the loss of pairing.  It was the sleep mode problem that encouraged me to use an EZ Key module (which does not go to sleep).  Details here - https://zubersoft.com/mobilesheets/forum...ight=pedal .

I did find a couple of articles relevant to the problem - http://www.the-bridge.cc/ct137s15/?p=2647 and https://shkspr.mobi/blog/2016/02/cheap-bluetooth-buttons-and-linux/ .  Whether or not you feel competent or ambitious enough to have a go at any of these solutions, I leave up to you.