The Milk Detector Box raise an alarm when the milk man puts milk packet inside the box.So you don’t need to check every time if the milk has come or not.
1.Power bricks with battery and connector
4.Double sided tape
HOW TO MAKE IT?
Step 1: Take a rectangular cardboard sheet,
Step 2:Cut the cardboard like the following picture,
Step 3: Fold the edges of the cardboard and make a box shape,
Step 4: The Milk box is ready,
Step 5: Now stick Obstacle brick using double sided tape ,
Step 6: Make the following connections,
Obstacle brick detects the milk which is falling inside the box and Latch brick raises an alarm. Turn off the alarm by pressing the Button brick.