GestureBand - Gesture-Based Message Display System

Gallery

Components

1. Microbit board – main controller that detects gestures
2. LED matrices (4 on a single board) – display preset patterns and messages
3. 3D-Printed Microbit Wrist Mount (“GestureBand”) – wearable holder for the Microbit
4. Cable – connects the Microbit to the matrix board
5. Jumper wires – connect the cable to each LED matrix
6. Microbit battery pack – portable power supply

Instructions

Step 1: 3D Printing the Wrist Holder

The Microbit wrist holder (“GestureBand”) was 3D-printed to make the device wearable.

Step 2: Mounting the Microbit

The Microbit was fixed into the holder with sensors positioned correctly.

Step 3: Arranging the LED Matrices

Four LED matrices were arranged on a single board.

Step 4: Connecting the Microbit

A cable connected the Microbit to the matrix board.

Step 5: Wiring the Matrices

Jumper wires connected the cable to each LED matrix.

Step 6: Powering the System

The Microbit battery pack powered the entire system.

Step 7: Programming the Microbit

The Microbit was programmed in MakeCode to detect different gestures using the accelerometer.

Step 8: Mapping Gestures to Patterns

Each gesture triggered a specific pattern — for example, tilt up displayed up arrows, tilt down displayed down arrows, tilt right displayed a right wave, and tilt left displayed left arrows.

Step 9: Adding Special Features

Special features were also added to display custom messages.

Step 10: Continuous Operation

The code continuously checked for gestures and sent the matching pattern or message to appear across all four LED matrices.

Step 11: Testing and Calibration

The setup was tested, calibrated, and organized neatly for the final display.

Code

Full code