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Fruits and vegetables have been a significant part of the human diet for the last many years. In the modern age, with the increase in disease variants, people have become more curious about natural and organic nutrition. In this current situation the thought has brought some problems with it which are mostly related to freshness. The awareness about consuming organic fruit has been highly increased in people and the major reason behind this awareness is the discoveries about health benefits of fruits and vegetables. There are several parameters that affect the freshness of fruit such as temperature, humidity, growth of micro-organisms whose effects are not visible with naked eyes but are highly dangerous and As fruits and vegetables are very good source of food for us and they are also good source of energy for microorganisms like bacteria and fungi too. We preferred developing a simplified system which will provide us with a similar amount of accuracy which is being provided by various color measuring instruments such as spectrophotometers and computer vision with digital cameras. This provoked us to develop the project consisting of PIC Microcontroller and Color Sensor TCS3200 which not only overcomes the drawbacks of the existing systems but also helps to increase the accuracy and keeps the database for future detections.

There are 65 million people who have access to the wheelchairs and about 80% requires another person to help them commute from one place to another. So, why is there a need of another person to help the disabled? We have prepared this wheelchair that works according to gestures of hand. An accelerometer is used as a sensor which gives an analog signal on its movement in any of the 6 axis directions, that is positive X axis, negative X axis, positive Y axis, negative Y axis, positive Z axis, negative Z axis. In this project we have considered X and Y axis for the direction. The Arduino continuously acquires data from the accelerometer and based on the predefined parameters, it sends a data to the NRF24L01 Transmitter. The data transmitted from transmitter is received by paired NRF2401 receiver, the data received from transmitter are processed by the arduino and appropriate signals are sent to motor driver which will activate the wheels of the motor.