How does a color sensor work – lesson – teachengineering gas exchange in the lungs happens by the process of


Students learn more about how color sensors work, reinforcing their similarities to the human sense of sight. They look gas works park address at the light sensing process—incoming light converted to electrical signals sent to the brain—through the human eye anatomy as well as human-made electrical color sensors. A mini-activity, which uses LEGO® MINDSTORMS® EV3 intelligent bricks and color sensors gives students a chance to investigate how color sensors function in preparation for the associated activity involving 76 gas card login the color sensors and taskbots. A PowerPoint® presentation explains stimulus-to-response pathways, sensor fundamentals, and details about the LEGO color sensor, including its two modes of gathering data and what its numerical value readings mean. Students take pre/post quizzes and watch a short online video. This lesson and its associated activity enable students to gain a deeper understanding of how robots can take sensor input and use it to make decisions via programming.

Biological engineers and neuroscientists perceive the human body as a functioning, controlled system, similar to a robot. More and more findings show that mathematical principles similar to those used in robotics are extremely useful or even necessary for a complete understanding of the human body. Through comparison of their similarities 4 gases in the atmosphere, students strengthen their understanding of the functioning of both human and robotic sensors. Color sensors are being used in all sorts of devices. For instance, when you scan your credit card to buy groceries, a color sensor reads the credit card numbers. Cameras continuously monitor activity in stores and banks. The cameras on cell phones are color sensors, too.

(Be ready to show students the 17-slide How Does a Color Sensor ortega y gasset obras completas Work? Presentation, a Microsoft ® PowerPoint ® file, to teach the lesson, as well as a computer/projector with Internet access to show a short online gas appliance manufacturers association video. In advance, make copies of the Color Sensor Pre-Quiz and Color Sensor Post-Quiz, one each per student, provided as attachments and slides. For a mini-activity, student pairs use LEGO robot components to experiment with color sensors.)

• LEGO MINDSTORMS EV3 Intelligent Brick, which is included in the LEGO MINDSTORMS Education EV3 Core Set that is used throughout this unit and available for $389.95 at or purchased separately for $189.99 each at

• Make sure students understand the human sensing process of the eye: Incoming light is refracted or made to change direction by the cornea, the outermost part of the eye. This light is directed through the pupil, which is a hole through which it can pass. The gas x ultra strength directions surrounding muscular tissue in the iris (the colored part of the eye) controls the pupil size. The light that enters the back of the eye through the pupil electricity meaning is redirected by the eye’s lens, to receptors in the back of the eye that convert light into electrical signals. The two main types of sensing elements in the eyes, or photoreceptors, are rods and cones. Rods are concentrated in the sides of the eye and detect the presence of objects in poor light. Cones are concentrated in the middle of the eye and detect details and colors in good light. The rods and cones current electricity definition physics send electrical signals through the optic nerve to the brain.

• Direct student pairs to follow the instructions on slides 13-14 to experiment with the 1) reflected light mode, 2) ambient light mode. Have them test the brightness of various colors and surfaces that they can find in the classroom. Have them test the ambient light in different areas of the classroom. Have them write down their observations and take notes about what they learn about how the sensor works. Doing this gives students an idea of how the sensor is calibrated. Understanding f gas logo the different modes and how to read the color sensor measurements is helpful for students to know when programming LEGO robots. Wrap up the mini-activity by asking the class the questions provides in the Assessment section.

Our human eyes detect light and convert information from gas mileage comparison the light into electrical signals that are sent to our brains. Similarly, the LEGO MINDSTORMS EV3 color sensor detects the brightness of light it receives. Then it sends this signal to the intelligent brick, which is the equivalent of a brain. We looked at both of these in a stimulus-sensor-coordinator-effector-response framework, which is used commonly in engineering for a variety of systems. So, you have learned some basics of engineering now!