Always forgetting to close the garage door? Now you can use the littleBits Cloud module, light sensor, and bright LED to wirelessly check whether your door is up or down!
How it works:
If the door is open, the light sensor will pick up higher levels of sunlight versus when the door is closed. The cloudBit uses your home's WiFi connection to send this data to the cloud, which can be viewed remotely from any internet-capable electronic device using the Cloud Control interface. When checking the number readout under the "Receive" tab, a high number
(closer to 99) means that the sensor is picking up light, indicating that the garage door is open. If the readout shows a low number (closer to 0), this indicates that the sensor is not picking up light, and the door is closed.
But wait, what if it's dark outside?! The sensor won't pick up any light! Never fear, this project has a means for determining the door's position in overcast or night time situations:
Under the "Send" tab in Cloud Control, adjust the slider to 100 in order to activate the circuit's Bright LED module. If the garage door is closed, the light will bounce off the door and into the light sensor. If you receive a high input reading, the door is indeed closed!