Hand txt/BMP viewer: reading
SD card, transmitting information over Bluetooth to the second device with a
display and displaying file structure, text and BMP files on the LCD screen.
With the help of accelerometer, it is possible to browse through the
file system using gestures. Stm32 was used as a main managing controller for SD card and LCD
screen. Second modification of device
included interaction with PC filesystem. Data was transmitted through WIFI
module from PC to microcontroller. Microcontroller connects to the WIFI hotspot
using ESP8266 WIFI module, desktop application is written on Java.