Outcome

• I used a button and a sensor as inputs, an LED as output. If the button is not pushed, then LED will not be turned off. If the button is pushed, LED will be turned on and light up according to the intensity of the ambient light in the surrounding.
• If the intensity of light is strong, (e.g., in this situation, nothing covers the sensor and blocks the light), the LED will change its brightness according to the intensity of light.
• If the intensity of light is weak, (e.g., in this situation, use something to cover, but not completely, the sensor), the LED will blink, indicating that the light is too dim now.