The client required the development of a
versatile hand-held text and BMP viewer that could read files from an SD card
and transmit information over Bluetooth to a secondary device with a display.
The device needed to display file structures, text, and BMP files on an LCD
screen. Additionally, the customer desired gesture control using an
accelerometer to navigate through the file system.
CHALLENGE
Creating a compact and efficient file viewer
with wireless transmission capabilities posed a significant challenge.
Integrating an accelerometer for gesture-based navigation and ensuring seamless
connectivity between devices required careful engineering.
SOLUTION
DataObrii created the hand txt/BMP viewer which
allows 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 an 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.
A second modification of the device included
interaction with PC filesystem. Data was transmitted through the WIFI module
from PC to the microcontroller. Microcontroller connects to the WIFI hotspot
using ESP8266 WIFI module, the desktop application is written in Java.
RESULTS & ADVANTAGES
The outcome was a feature-rich hand-held file
viewer with gesture control, capable of efficiently reading and displaying text
and BMP files. The integration of gesture navigation added a
unique and user-friendly dimension to the device.
This project exemplified our proficiency in
designing cutting-edge solutions that bridge the gap between hardware and
software, resulting in innovative and user-centric products.
