Smart Wearable

Application

Challenge: While playing Table Tennis it is crucial at what angle you hold your bat. If the tilt is more or less, then the ball may not get required topspin or backspin.

Solution: So, my smart wearable detects the rotation angle of the wrist and triggers haptic feedback and on board LED animation to notify the user that the angle is correct. Additionally it also senses the temperature and humidity and alerts the user if the threshold is crossed.

Features: Completely wireless with Wifi data upload using IFTTT, on board 3.7V LiPo rechargeable battery, LED Screen, Pixel LED for animation, Haptic feedback, Accelerometer, Environment sensing.

System Workflow

Schematic

Sensor Implementation

Calibration and Filtering

MCU and Screen Implementation

Enclosure and Attachment Design

• The enclosure is 3d Printed with a passage for the strap to fit the size of the circuit and have cutouts for Screen and the BME Sensor on the top.

• The two Mechanical switches to switch mode are fixed to the enclosure.

• The circuitry is compact and layered to fit everything with Battery.