Thanks - so it actually seems the RESET button can be used as an ON switch because it’s the only way out of Deep Sleep (if you consider this OFF)
My project does not have room for a switch due to its size, so this is a workable solution for me
It is a shame there isn’t one working button (even as tiny as the current RESET) on the Xiao Sense, maybe on V2 they can shift the BT antenna!
Thanks!