Security Plate, a pressure plate detecting the weight changes with light sensor built with LEGO Mindstorms EV3

A phone holder that rings an alarm when the phone is picked up. It is a plate, lying on a rubber wheel, that changes its height, based on the weight of the object placed on top. The color sensor detects these changes and rings the alarm. With some fine tuning, this robot can even act as a weighing machine.

This material requires a subscription to one of the following plans:

  • FLLCasts Team Six months
  • FLLCasts Personal B One Year
  • FLLCasts School Student One Year
  • FLLCasts School

In order to build the full construction, you'll have to subscribe to FLLCasts.

Image for Security Plate, a pressure plate detecting the weight changes with light sensor built with LEGO Mindstorms EV3

Learn more about the subscriptions

In order to view the step you've selected, you'll have to subscribe to FLLCasts.

Image for Security Plate, a pressure plate detecting the weight changes with light sensor built with LEGO Mindstorms EV3

Learn more about the subscriptions

Image for Security Plate, a pressure plate detecting the weight changes with light sensor built with LEGO Mindstorms EV3

Start Building

Downloading initial steps...

Building instructions delivered to your device by 3DAssemblyInstructions.com

  • #640
  • 08 Feb 2019

To construct this you will need

  • LEGO Mindstorms EV3 45544 Education Core
  • LEGO Mindstorms EV3 45560 Education Resource

Bill of materials (Parts list)

Modules Navigation

Courses and lessons with this Material

This Material is used in the following courses and lessons

Image for Robotics with LEGO - Level 3.0 - Security systems
  • 50
  • 1:03
  • 213
Image for Lesson 2 - Weighing security stand
  • 8
  • 5
  • 15
  • 3d_rotation 1
Image for A robot a "day" keeps the questions awake. Version 2.0 (PRE-RELEASE)
  • 16
  • 5:25
  • 66
Image for Security Plate
  • 0
  • 0
  • 3d_rotation 1