Marvel LE
6 / 2 / 2023
#LEVEL -1 EV-RE Report ##Task 1: Understanding LTspice and KiCad LTspice is a powerful, fast, and free SPICE simulator software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.LTspice has been used for Design and simulate a astable multivibrator using 555 timer KiCad is a free software suite for electronic design and simulation of electronic hardware.KiCad was used to make simple led blinking circuit. ##Task 2: DC motor speed control using Arduino The speed of a DC motor can be controlled using the PWM functionality available on microcontrollers such as the Arduino. Manual input to control the speed is done using a potentiometer on the microcontroller board. The microcontroller then provides PWM signal to the motor driver, which in turn drives the DC motor at the required speed. ##Task 3: DC motor direction control using Arduino The direction of a DC motor can be controlled using a microcontroller such as an Arduino. Manual input to control direction is via a potentiometer on the microcontroller board. The microcontroller sends the appropriate signal to the input pin of the motor he driver. A motor driver drives a DC motor in the desired direction. ##Task 4: Point turn of a vehicle An object undergoes a point rotation when it rotates around an axis that passes through the center of the object. The vehicle makes a point turn when the wheels on one side turn in one direction and the wheels on the other side turn in the opposite direction as shown. The direction of rotation of the vehicle depends on the direction of rotation of the wheels. A microcontroller like an Arduino can be used to send the appropriate signals to a motor driver like his L298N. The L298N drives each motor in the desired direction.A microcontroller such as arduino can be used to send appropriate signals to a motor driver such as a L298N which in turn drives the respective motors in desired direction. ##Task 5: Obstacle avoiding vehicle Ultrasonic sensors can be used to detect the presence of objects around the vehicle .It works on the principle of ultrasonic sound and echo .It send a signal whenever they are present. A microcontroller like an Arduino can use these signals to control the vehicle and avoid collisions with nearby objects. Here we use such sensors to detect obstacles in front of the vehicle and use the Arduino Uno with the feed back of the ultrasonic sensors changes the course of the vehicle to avoid colliding with the obstacles. ##Task 6: Measure temperature using an lm35 temperature sensor LM35 is a temperature measuring device having an analog output voltage proportional to the temperature.It provides output voltage in Centigrade (Celsius). It does not require any external calibration circuitry.It can measure temperature in the range of -55°C to 150°C.LM35 output is given to arduino in the form of analog voltage through analog pin.Which is converted to its digital form and processed to get temperature reading. ##Task 7: Temperature and Humidity Detection with DHT11 DHT11 sensor measures and provides humidity and temperature values serially over a single wire.It can measure relative humidity in percentage (20 to 90% RH) and temperature in degree Celsius in the range of 0 to 50°C.It has 4 pins; one of which is used for data communication in serial form.Which processed using the DHT11 library and giving out put on lcd. ##Task 8: Hall Effect Sensor Measuring the speed of a BLDC motor using a hall effect sensor and display it on the serial monitor.Bldc stands for brush less DC Motor.The RPM of the Bldc motor can be known by constructing a tachometer from a hall effect sensor ##Task 12: Solar cell with zener diode The Voltage difference can be observed between a diode when there is incident light on the diode.This due to poperty of zener diode which is heavily dope ##Videos of all executed tasks in the given drive https://drive.google.com/drive/folders/1_hfY-i7kFXkGMgwxR50iyIsbOL7A4w6b?usp=sharing ##Individual Reports are in the given drive https://drive.google.com/drive/folders/1zK1G8TwYyJYpwKYqrWnS7dgHiBMtyHDa?usp=sharing