5.1 Multicolor lamp
The multicolor lamp example we introduced earlier consists of a
tricolor LED that is controlled by an Arduino. In the physical
lamp, the Arduino, the LED, and a battery are mounted inside a
custom lampshade we constructed from plywood and textile
composites. As we described earlier, the lamp is controlled by
rotating a phone. In the earlier example, we described how a user
could control the color of the lamp via Amarino. In this scenario,
though the user is able to control the lamp with a phone, there is
no information on the phone that indicates how this control works
or communicates the current state of the lamp.