I updated the I2S driver for embedded Linux such that the driver intended for the previous model of Raspberry Pi to be compiled for Linux 5.x used for Raspberry Pi 4.

This is a semi-automatic stock trade app which is backed by the algorithm thought by the client.

To improve OCR recognition rate of domain-specific images, I modified the code and retrained the model.

A camcorder app for Android which records the video real-time and has a rudimentary DVR feature like returning to the past or repeat a scene.

An app for drawing using pointing devices (e.g., a pen mouse) with measurement proportional to actual measurement. Drawings could be exported to a DXF file, which could be read from a CAD program.