Exploration Phase: Sensors, Data & Smart Systems
Deepens understanding of sensors, introduces data logging and LCD displays, and builds complex autonomous systems. Aligned with CBSE Class 8 Science chapters on sound, light, friction, pressure, and chemical effects.
Upgrade Kit
₹800–₹1,200 per student
Sessions 1–18
From single sensors to multi-sensor data logging with LCD display output and scientific data analysis.
Module 1: Review & Level Up
Quick review of Arduino, circuits, and sensors from Class 7. Level-up challenges to verify readiness for advanced concepts.
CBSE Link
Class 7 review
Module 2: Sound & Vibration
Ultrasonic sensor for distance, buzzer for sound generation. Project: Arduino Theremin — hand distance controls pitch (200–2000Hz). Students create frequency vs. distance tables.
CBSE Link
Ch 13: Sound
Module 3: Light & Optics
Advanced LDR circuits, light intensity measurement, LED brightness control with PWM. Introduction to photoelectric concepts.
CBSE Link
Ch 16: Light
Module 4: Force, Pressure & Friction
BMP180 barometric pressure sensor, force-sensitive resistors. Capstone: Weather Station v2.0 with BMP180 + DHT11 + LDR + sound sensor, all displayed on 16×2 LCD.
CBSE Link
Ch 11: Force & Pressure, Ch 12: Friction
Sessions 19–36
Electrochemistry, advanced robotics, and the Smart Irrigation capstone connecting to agriculture and water management.
Module 5: Chemical Effects & Electrochemistry
Electrochemistry experiments, conductivity testing of liquids with Arduino, LED indicator for conductive vs. non-conductive solutions.
CBSE Link
Ch 14: Chemical Effects of Electric Current
Module 6: Advanced Robotics
Line-following robots, obstacle avoidance with multiple HC-SR04 sensors, PID-like control concepts, relay modules for high-power devices.
CBSE Link
Multi-sensor integration
Module 7: Year-End Projects
Year-End Capstone: Smart Irrigation System — soil moisture sensor + DHT11 + relay + water pump + LCD. System monitors soil and waters only when dry.
CBSE Link
Ch 1: Crop Production & Management
What students build in Class 8
Arduino Theremin
Ultrasonic sensor measures hand distance → closer hand = higher pitch. Students map 5–30cm to 200–2000Hz using map() function.
Components
Arduino, HC-SR04, piezo buzzer
Weather Station v2.0
Multi-sensor station with LCD cycling through pressure, humidity, light, and sound. Data logged via Serial for computer graphing.
Components
Arduino, BMP180, DHT11, LDR, sound sensor, 16×2 LCD
Smart Irrigation System (Capstone)
Monitors soil moisture and waters only when dry — demonstrating efficient water management for agriculture.
Components
Arduino, soil moisture sensor, DHT11, relay, water pump, LCD
Class 8 Upgrade Components
Students keep their Class 7 kit and add these components for advanced sensor projects.
₹800–₹1,200 per student
BMP180 barometric pressure sensor
DHT11 temperature/humidity sensor
16×2 LCD display + I2C adapter
Sound sensor module
Soil moisture sensor
Relay module
Water pump (mini submersible)
Additional jumper wires & I2C cables
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per student, Class 7 Kit