Don't Open the Fridge When You're on Diet

This little machine includes a set of things, I made it with arduino leonardo as the one to run my command, this photo is taken when all wires are connected before adding on to the fridge

at first , I started with the LCD and the lock , the lock is made with changeable risistance , you have to turn to the right angle to unlock ,when it's unlocked it will show "access granted" and if not , it will show "on diet" and it works perfectly when i finished it

I dont't want to lock the door completely , that's because it won't be anything funny to see , so I started making the sensor when the door is opened i use simple metal pieces connected to two wires and then i stick the metal piece on the fridge , you can't see it here though .and to test if it is working I add a LED to show the answer.

this part is to make the stepmotor move when you didn't inter the right angle , the stepmotor plays th important part of this machine it is the shaft of the trap on the fridge to make thing fall down ,I don't have any servo beside me so I use this stepmotor ,I test it then and it woked just as I thought it would be.

done !!!!!!!!

so after I finish setting up all the things on the fridge, I start trying and then make these video , the first is the one that I tried it without access and just as you see it fells down perfectly

this one is the one that I access it and the thing didn't fall down