ABHISHEK_BHARATI'S LEVEL 01 REPORT

16 / 1 / 2026

TASK -3 TEMPERATURE AND HUMIDITY DETECTION (EMBEDED)

OBJECTIVE -

Use the LM35 analog temperature sensor to monitor ambient or localized heat (e.g., near a soldering iron). When temperature exceeds a threshold, turn on an LED using a BJT as a switch. In parallel, use the DHT11 digital sensor to read and display temperature and humidity on a 16x2 LCD.

OUTCOME

I understood the the analog and digital sensor interfacing and where it is used in the real life . it is used in Temperature monitoring , fire alarm , industrial safety Learned the basics of digital sensor interfacing ,in this learned how to use the library basic error handling ideas

PHOTOS OF MY WORK

VIDEO

Task 10 - Auto Night Lamp Using LED for Electric Vehicles(Embedded)

OBJECTIVE

Making a circuit which turns on the lights automatically when it is dark .

working

Voltage divider with ldr and resistor when light falls on the ldr the resistance decreases , next to that transistor base voltage drops so the led gets off . When its dark LDR voltage rises and the transistor voltage rises so the LED on used as a switch npn bjt transistor amplifies the small voltage from the LDR circuit . when base voltage is sufficient the transistor conducts and the LED gets ON .

OUTCOME

learned to built the auto night on light using LDR and Transistor with an simple circuit . https://www.youtube.com/shorts/UIs0ykRmdfU

Task 7 - Solar Tracker(Embedded)

OBJECTIVE

Use LDRs and a servo motor controlled by Arduino to orient a solar panel toward the strongest light source. The system maximizes solar energy collection using dual LDR comparison logic and basic actuator control.

OUTCOME

created a system that turns the solar panel in the direction of the sunlight . So that it can absorb the maximum amount of energy . Sunlight moves in a day from east to west and fixed solar panel can not get the maximum power in a day ....so this project is the good solution for this here i used LDR (light dependent resistor ) SO its basically a resistor whose resistance is inversely proportional to the light falling on it . here Arduino acts as the brain of the system , it takes the decision by collecting the data from the ldr and gives command to the servo motor . servo motor acts as the muscles of the system and moves the panel to 0' to 180' This system is based on the SUNFLOWER concept (HELIO TROPISAM) .

Task 5 - Battery Capacity Measurement(Power Electronics)

OBJECTIVE

Monitor the voltage of a Li-ion battery using analog input on Arduino. Use a MOSFET as a switch to disconnect the load when voltage drops below a safe threshold. Ensures safe battery operation and demonstrates basic battery protection logic.

OUTCOME

Task 13 - Utilizing Transistors as Switches and Voltage Regulators

OBJECTIVE

To understand the switching property of Transistor .

WORKING

Transistor is a 3 layers doped semiconductor device and it has eiter NPN OR PNP configuration. Transistor has 3 terminals , that are EMITTER , BASE AND COLLECTER .The transitor acts as a switch and controlled by the base current . When there is no base current is given , then switch acts as open circuit and has some voltage drop across it . wehn a very small amount of current is given to base the switch acts as closed switch .the vcc is connected with LED through a 220ohms resistor and emitter is given to the ground . the base signal is given through the arduino . here are some pics of my work

Task 14 - LED Brightness Control Using PWM and MOSFET

To learn the pulse width modulation concept and control of mosfer through arduino

WORKING AND MY LEARNING

MOSFET is widely used Semiconductor device .It has three terminals that are GATE DRAIN AND SOURCE. it is a voltage control device and used as switch in many operations . when voltage is given across the gate and drain the deivce acts as short circuit. in this task the the ardunio is coded such that it sends very fast on/off signals to the msofet that is also called [PWM] by changing the hwo long a signals stays on or off we can control the brightness of the LED. HERE IS THE VIDEO OF MY WORK ()

Task 17 - Building a Basic H-Bridge Motor Driver using MOSFETs

OBJECTIVE

To know how to bulit a H bridge and how to control the direction of motor using H BRIDGE.

WORKING AND MY LEARNING

I learnd how to built H bridge .In a H Bridge four MOSFET,TRANSISTOR OR DIODE, are connected in a bridge .In case of MOSFET ,when there is no voltage across the gate and source of the msofet it acts as open switch . CASE 1: Gate voltage is given to upper left and lower right there will be a closed loop and current starts flowing from motor in left to right direction , in Case 2: the voltage is given to the upper right and lower left so that it reverse the current in the motor and the direction of motor can be changed. here is the picture of circuit diagram which i refered and pic of my crcuit is also added

Task 4 - BLDC Motor And Hall Effect Sensor

objective : to know how the hall effect sensor works

outcome

HALL EFFECT states that when field passes through a current carrying conductor a voltage is generated in it

BLDC MOTOR

it is the brushless dc motor , no brushes are present hence speed is very high , long life and efficient . it is mainly used in the drones ,evs hard disks etc.. A HALL EFFECT SENSOR detects the magnetic field ,when magnet field comes nearer sensor gives output . pics of my work

TASK 1: 555 TIMER ON LT SPICE

TASK 11--LT SPICE BUCK CONVERTER

TASK --8 MATLAB SIMULATION

OUTCOME AND MY LEARNIG

Learned how to design on the matlab and the simulation of the circuit

circuit

output