Its very common to see computer users hunched forwards over a screen, which eventually will lead to back problems. Various gadgets out there address this issue by constantly reminding their users to sit up right, but Most of them aren't fun. so I made a fun gadget for this problem.

in this project I used an Arduino Uno , mpu6050 sensor and 2 servo Motors.

MPU-6050 is a low-cost, highly accurate inertial measurement unit (IMU) with six degrees of freedom (DOF). IMUs can measure acceleration, inertia and a number of other parameters to allow you to determine their spatial position and velocity.

MPU-6050 is capable to send data in i2c protocol. (SCL & SDA pins)

There are plenty of Open Source libraries to work with this very common sensor, which helps reduce the learning curve for those unfamiliar with programming a fairly complex device.

the way that it works:

mpu6050 sensor attaches to a person and when he/she hunch The robot arm corrects the person's posture.

I built the robot Arm with the help of two SG90 servo motors.

SG90 is a 180° rotation servo. Servo motors works on PWM (Pulse Width Modulation) signal.

as I said mpu6050 sensor attaches to person shoulder and when he/she hunch , roll variable gets more than than 55 degree so Arduino sends signal to the servos to raises the robot arm and corrects the person posture. And after 1 second goes back to first position.