Automatically change the dark corner of the house to be brighter with LED. No AC main but can run with battery solar charger. Do not doubt that How does it work or is it easy? Let's learn.
I design Simple dream baby automatic sensor night light as Figure 1 since it cheap and easy to makes,The LEDs glow brightly just when in night or dark only.
lets to see Automatic Op-amp night light circuit using IC-741. It is also very simple. As my feelings It has high sensitivity more than one,high accuracy.