MDDN 251: Mistake and new concept

So i made a foolish mistake with the concept that i originally had and the motion sensor i had purchased. The PIR motion sensor is an "OFF" or "ON" type of sensor, which meant that it either detected motion or it didn't. Sadly for me, i realised this quite late into the assignment and didn't have a chance to right my wrong while at the same time fully completing the prototype. The type of motion that my chosen concept entailed was more of a webcam type motion detection. It pays to read fully about the type of component you're purchasing before you do so. Therefore, to use this new motion detector that I have purchased, i need to change my concept.

My first idea of a new concept was to create a motion responsive Night Light for toddlers. The way that it would work would be the motion sensor would detect the movement in the restless child at night, thus turning on an LED that would illuminate a section of their room in a soft light. Then once the child falls asleep and is still, the motion detector will not sense any motion, and will turn off after a certain amount of time. For example, if the child is still for more than 20 minutes, and the sensor is off for that long, the sensor will automatically shut down until the switch is reset the next night. This is implementing a power saving method that most other nights lights don't use, making it more unique. Also, there will be a sound detector that will make the night light run as well, which remains on but only has a small amount of detection, so the light will turn on if the child is loud enough for example, waking up at night and crying, calling out, going to the bathroom etc. will all make the light turn on.