Remote switch with mobile phone
The idea is to build a device that can be switched on with mobile phone and can be put between power outlet and appliance that needs power. Device has a SIM card with predefined number.
How it works: device is connected to power outlet and gets its supply voltage from it. If someone calls to device, power is switched on for connected appliance with the use of thyristor. The use of device is broad. E.g. you can switch on water boiler in the morning up to car ignition.
Knowledge needed to team: electronics specialists
Return to idea list