Around nine million individuals are dumb at intervals of the planet's unit of measurement. Communication between a deaf and a hearing person has a significant disadvantage as compared to communication between blind and elderly visual individuals. A dumb communication translator is a gadget that translates hand motions to sensible speech. This job provides assistance to persons who are deaf and dumb. The main goal of this research is to connect them to the actual world via a sophisticated methodology. It is based on Human Computer Interaction, in which the patient is connected to the outside world by translating their sign language into conventional language. In this work, Arduino Uno, MP3, and speaker module has been used. Some button has been used for generating the voice signal at the output.

Wireless Controlled by Voice Automation in the Home Based on Bluetooth, a project that is moving forward with cell (application) in addition to giving the workspace to the elderly and injured, so they may control household utilities. Voice interest is based on their phone. The gadget is disguised in such a manner that it will be quick to pass on, present, figure out, run, and keep up with the dark person. Wires for house automation are also utilized to interconnect the many electrical equipment that are used in a home. This work may be run with a variety of options, such as a fingerprint sensor that will lock and unlock the door, or any other security system that will be installed in a home or business. And a leakage detector will track the system, and if it detects a leak, an automated SMS will be delivered to the user through GSM.

A fire is a calamity that can result in the loss of life, property damage, and the victim's lasting incapacity. Our obstacle remover and fireman Robot has been declared. In the case of a fire, we are compelled to employ human resources, which are not safe, to rescue people and put out the fire. With the advent of technology, particularly in robotics, it is now possible to respond quickly to fire locations and combat fires. This would increase firefighter efficiency while simultaneously preventing them from putting their lives in danger. In this project, we created a prototype robot using Arduino that detects and extinguishes fires autonomously. When the flame sensor detects a fire, the water pump and servo motor are activated. The capacity to detect fire sites automatically and extinguish fire remotely at a distance of 20 cm from the fire. The robot is designed to locate fires and spray water into them in order to decrease the amount of damage.

The aim of this work to investigate and create a solar-powered UPS for the Bangladeshi market as an alternative energy source. It comprises of a design that was created based on our study. Solar and wind UPS systems are made up of a solar charge controller with inverter circuit, and solar panel. Many circuit simulations were performed during this procedure to meet the work’s requirement. It also demonstrates that solar and wind-powered UPSs will be very effective and profitable in the electrical UPS industry. In this project, the solar panel is made up of solar cells that convert solar energy into electrical energy. We also have a charging circuit that charges a 12V DC (direct current) battery and an inverter circuit that converts the voltage to AC (alternative current).