Do you want it to go from dim to bright while sitting on the ground without being touched by an actor?
If so something like an Emisar D18 would work, but you might need custom firmware programmed for it.
Anduril firmware is open source, but you might need to program in a special mode. Something like you press the button then after a set period of time it starts ramping until it hits max and stays there. That way it would work without being touched.