9. Case 07: Auto Lamps#

9.1. Introduction#

  • The auto lamps are able to turn on when the night is approaching and to turn off while the daylight comes.

9.2. Function#

  • Detect the light level with the light sensor on micro:bit, if the light level is too low, program to turn on the lamps; or to turn off the lamps.

9.4. Picture#

../../_images/microbit-Smart-City-Kit-case-01-02.png

9.5. Hardware Connection#

Connect the yellow LED to P1 port on IoT:bit.

../../_images/microbit-Smart-City-Kit-case-07-03.png

9.6. Software Program#

Click “Advanced” in the MakeCode drawer to see more choices.

../../_images/microbit-Smart-City-Kit-case-01-04.png

For programming, we need to add a package: click “Extensions” at the bottom of the MakeCode drawer and search with “iot-environment-kit” in the dialogue box to download it.

../../_images/microbit-Smart-City-Kit-case-01-05.png

Notice: If you met a tip indicating that some codebases would be deleted due to incompatibility, you may continue as the tips say or create a new project in the menu.

9.7. Program#

Detect if the light level is below 100.

../../_images/microbit-Smart-City-Kit-case-07-07.png

If yes, set to light on the LED; or light off it.

../../_images/microbit-Smart-City-Kit-case-07-08.png

Link: https://makecode.microbit.org/_RJV5CuH4i1f9

9.8. Result#

  • If the light level is too low, program to turn on the LED automatically; or to turn off it.