Page 105 - KEC Khaitan C8.2 Flipbook
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FUNDAMENTALS OF CHAPTER
SENSORS & DATA B3
Learning Outcomes 95%
By the end of this lesson, students will:
understand what sensors are and why they’re essential in robotics.
differentiate between digital and analog inputs in an Arduino-based system.
interpret sensor data using blocks to read values and respond accordingly.
build a basic Reverse Parking System to detect and signal nearby obstacles.
In Lesson 1 and 2, you learned how to power and control simple outputs—like LEDs—in precise
sequences. But if robots only follow pre-set instructions, they can’t truly interact with the world
around them. That’s where sensors come in. Imagine a car that can automatically brake when
something is too close, or a smart house that adjusts lighting based on outdoor brightness. Sensors
give robots the eyes and ears (and sometimes nose!) to understand their surroundings and act
accordingly. In this lesson, you’ll discover how to integrate different types of sensors into your
Arduino projects and unlock the power of real-time data.
UNDERSTANDING DIGITAL VS. ANALOG INPUTS
DIGITAL INPUTS
Definition: Digital inputs can only register two states—HIGH (1) or LOW (0).
Examples:
o A button or switch that’s either pressed (HIGH) or not pressed (LOW).
o A motion sensor that toggles a digital pin when movement is detected.
o Why Use Digital: Simple, clear signals; easy to code decisions (IF pressed THEN do
something).
ANALOG INPUTS
Definition: Analog inputs can read a range of values, not just on/off.
Fundamentals of Sensors & Data 103

