Using Tasker, IFTTT and a Wemo switch, you can easily create a profile to automatically turn off a Wemo switch when leaving your phone charging overnight. You can also have another profile to enable and disable this profile using AutoVoice.

  • Sign up for IFTTT here
  • Learn more about the Maker channel here
  • Learn more about AutoVoice here

UPDATE: The Maker channel is now called Webhooks