Working Procedure:

The homemade bicycle generator converts human mechanical energy into electrical energy using a basic setup of a bicycle, dynamo, battery, and inverter.

1. Mechanical to Electrical Conversion:

A dynamo is attached to the rear wheel or pedal system of the bicycle. As the rider pedals the bicycle, the wheel rotation drives the dynamo, converting the mechanical energy from pedaling into electrical energy (typically DC output).

2. Energy Storage:

The generated electricity is directed to a rechargeable battery. A charge controller can be used to regulate voltage and protect the battery from overcharging.

3. DC to AC Conversion:

The stored DC power in the battery is then connected to an inverter, which converts the DC voltage into AC voltage suitable for powering small household electrical devices.

4. Burning Calories and Power Generation:

As the user pedals, they not only exercise and burn calories but also generate useful electrical power. The system provides a sustainable way to produce clean energy through human effort.

This setup demonstrates an eco-friendly method to simultaneously promote fitness and generate renewable energy.

Working Procedure:

The 4-wheeler car is controlled using an Arduino microcontroller, an L293D motor driver, a Bluetooth module, and powered by a 5V battery supply. An Android app communicates with the car wirelessly via Bluetooth.

1. Basic Control:

The user sends control commands (forward, backward, left, right, stop) through the Android app. These commands are received by the Bluetooth module and processed by the Arduino.

2. Motor Operation:

Based on the received command, the Arduino controls the L293D motor driver to rotate the DC motors in the required direction, moving the car accordingly. The motors normally operate using the 5V battery supply.

3. Boost Function

A physical Boost Button is integrated into the car. When pressed, it switches the motor power supply from 5V to 9V, temporarily increasing the speed and torque of the motors for a boost effect.

4. System Reset:

Upon release of the boost button, the supply returns to 5V, and normal operation continues. The system continuously listens for further commands from the Android app.

This procedure offers simple wireless control of the car with an additional manual speed boost feature, ensuring enhanced user control and flexibility.

Working Procedure:

The automatic railway gate control system operates using IR sensors, an Arduino microcontroller, an L293D motor driver, and DC motors. Two IR sensors are placed on either side of the railway crossing to detect the arrival and departure of the train.

1. Train Detection:

When the train approaches, it blocks the first IR sensor. The Arduino detects this signal and sends commands to the motor driver to rotate the DC motors, lowering the gate and closing the crossing.

2. Train Passage:

After the train crosses, it is detected by the second IR sensor. Upon receiving this signal, the Arduino activates the motor driver to rotate the motors in the reverse direction, raising the gate and reopening the crossing.

3. Idle State

The system returns to the idle state, continuously monitoring the IR sensors for the next train.

This automated process ensures safe and efficient operation of railway crossings without the need for manual intervention.