Level 1 EVRE
5 / 10 / 2024
Task 1: Circuit Simulations
Tools: LTspice and KiCad
Objective: Design and simulate an astable multivibrator circuit using a 555 timer in LTspice. Learn about this type of oscillator circuit, which toggles between high and low states.
Practical Applications: Oscillator circuits are fundamental components of numerous electronic devices, such as timers, pulse generators, and signal oscillators.
Skills Acquired: By mastering LTspice and KiCad, you’ll improve your ability to design, simulate, and implement various electronic circuits, including PCB layouts.
Task 2: Speed Control of DC Motor
Component: L293D Motor Driver
Objective: Control the speed of a DC motor shaft using the dual H-Bridge L293D motor driver.
Key Concepts: Learn how to implement PWM (pulse-width modulation) to adjust motor speed smoothly and efficiently.
Application Areas: This skill is relevant for various projects, including robotics, electric vehicles, and automated systems that require precise motor speed control.
Task 3: Direction Control of a Motor
Focus: Mastering Motor Control
Objective: Control both the speed and direction of a DC motor using the L293D motor driver and Arduino.
Key Insights: Understand how to configure an H-bridge to reverse motor direction seamlessly, which is essential for applications requiring bidirectional motor control.
Applications: Useful for building electric vehicle drivetrains, robotic arms, and other mechatronic systems that require precise movement control.
Task 4: Point Turn of a Vehicle
Focus: Precision Maneuvering
Objective: Use the knowledge gained from previous tasks to achieve a point turn of a vehicle, demonstrating tight-turn control.
Skills Acquired: Practice precise control over vehicle movements, crucial for autonomous vehicles and robotics navigating confined spaces.
Task 5: Ultrasonic Sensor
Project: Obstacle Avoiding Vehicle
Objective: Create an obstacle-avoiding vehicle using the HC-SR04 ultrasonic distance sensor.
How It Works: The sensor measures distance to obstacles and sends data to the control system, allowing the vehicle to navigate around them.
Benefits: Build autonomous vehicles and robots capable of safely navigating environments, avoiding collisions and obstacles.
Task 6: Temperature Detection
Focus: Thermal Monitoring
Objective: Measure temperature around a soldering gun tip with an LM35 sensor and Arduino.
Procedure: Measure the temperature at intervals of 5 seconds and control an LED using a BJT switch when the temperature exceeds a set threshold.
Significance: Improves safety and efficiency during soldering and high-temperature tasks. Helps maintain safety and prevent damage to components.
Task 7: Temperature and Humidity Detection
Focus: Environmental Monitoring
Objective: Measure and display temperature and humidity using a DHT11 sensor and LCD display.
What You’ll Learn: Use the DHT11 sensor for environmental monitoring and data visualization.
Applications: Useful in smart home automation, greenhouse management, and weather monitoring systems.
Task 8: BLDC Motor and Hall Effect Sensor
Project: Motor Speed Measurement
Objective: Measure the speed of a BLDC motor using a Hall effect sensor and display the results on the serial monitor.
What You’ll Learn: Calculate motor speed based on data from the Hall effect sensor and understand how to use this information for control and feedback.
Importance: Valuable for high-performance electric vehicles, drones, and precision machinery requiring accurate motor speed measurement and control.
Task 9: Battery Capacity Measurement
Focus: Monitoring Battery Health
Objective: Monitor the voltage of a Li-ion battery connected to a load and control the current using a MOSFET switch.
Additional Safety: Implement overcharge and current protection measures to maintain battery longevity and prevent damage.
Significance: Crucial for electric vehicles and renewable energy systems to ensure safe and efficient power management.
Task 10: Battery Charging
Project: Solar Charging
Objective: Charge a Li-ion battery using solar panels.
Process: Set up solar panels, a charge controller, and appropriate wiring to charge the battery effectively.
Benefits: Leverage renewable energy sources for sustainable power and reduce dependence on conventional power grids.
Task 11: Understanding 555 Timer and LDR
Project: Automated Lighting Control
Objective: Create an automated headlight setup using an NE555 timer and an LDR (light-dependent resistor).
How It Works: The LDR senses ambient light levels and sends a signal to the 555 timer, which controls the headlight’s activation.
Applications: Valuable for vehicle lighting and other projects involving light-sensitive control.
Components Required:
- LDR (Light Dependent Resistor)
- IC NE555 with Base
- LED1 & LED 2 (Light Emitting Diode)
- Variable Resistance of 47 KΩ
- On/Off Switch
- 9V Battery with strip
- 47K Trimmer or Preset
- 330E Resistor
Task 12: Solar Panel
Project: Solar Power Setup with Diodes
Objective: Create a simple solar panel setup using diodes to prevent reverse current flow.
How It Works: Diodes ensure current flows in one direction, protecting the solar panel and connected battery.
Advantages: Efficiently harness solar energy while maintaining a safe and reliable power system.
Task 13: Solar Tracker
Project: Efficient Solar Energy Absorption
Objective: Design and implement a solar tracker using a servo motor to maximize energy absorption by solar panels.
How It Works: The solar tracker adjusts the solar panel’s orientation based on the sun’s position throughout the day.
Benefits: Maximizes energy capture to improve the overall efficiency and output of solar panels.