Capability difference

[snell]

If you want a device driver to allow a device to do something, they basically need the actuator capability:

What are actuators?

All devices are split into broad categories, actuators and sensors. actuators accept commands, sensors produce data. The actuator and sensor capability do not in and of them selves do not have any native commands, they are there to simply partition devices into these two broad categories for use in app device selectors.