Documentation

• Chapter: Power
• Section: Power from the wall
• Section: Power from batteries
• Section: Is this device powered?
• Chapter: Behavior of powered devices
• Section: Devices cannot be turned on when they have no power
• Section: Battery-powered devices issue a warning when they are nearly out of power
• Section: Devices shut off when they have no power
• Section: Device gives notice when its internal rechargeable battery reaches full power
• Example: * Lamplighter - A very simple scenario with a wall-plugged lamp that lights when turned on.
• Example: * Lamplighter Two - The same scenario, but with the addition of a portable flashlight and a battery-operated robot dog.
• Example: * Lamplighter Three - The flashlight again, but this time with a rechargeable battery and a battery charger that can restore it to full strength. We also use the "warning about the failure" activity to add a more interesting description when the flashlight is about to go out.

Power Sources provides an implementation of plugs and batteries, and is designed to be used alongside Computers or as a base for other device implementations. It requires Plugs and Sockets by Sean Turner.