chapter 1 Introduction 7 System Description

Flex sensors: are sensors that change in resistance depending on the
amount of bend on the sensor and they are responsible for
converting the fingers bending to electrical signals through voltage
divider circuit.
Accelerometer and gyroscope: is sensor that measures the
orientation and acceleration so in our project it can determine the
hand movement direction.
Arduino Uno Microcontroller: processes the signals and perform
analog to digital signal conversion.
Zigbee : is that transmits the input signals wireless to the other
zigbee in the other subsystem where each zigbee has bidirectional
antenna.
In The hand subsystem the flex sensors output a stream of data that
varies with degree of bend.
The accelerometer outputs a straight voltage for each axis (3) and
needs no extra steps to send the voltage to the analog to digital
converter. Together, these sensors can accurately detect and output
the position of the fingers and hand using voltages.
The analog outputs from the sensors are then fed to the Arduino
microcontroller. It processes the signals and perform analog to
digital signal conversion. The resulting digital signal is encoded and
transmitted through Zigbee .