Digital Signage Board

This paper outlines the development of a GSM-based wireless noticeboard that incorporates Firebase as the cloud storage and retrieval system. A message can be changed in real-time using Short Message Service (SMS) and an Android app built in MIT App Inventor. The proposed system offers a much- improved method of a traditional noticeboard because it allows for remote access and timed notifications. The system uses an Arduino Uno, SIM800L GSM module, and an Amazon Fire Tablet as an interface. Complete and timely delivery of messages with real-time updates demonstrates the implementation and testing, making this a perfect solution for digital noticeboards. The notifications can be accessed by any device with the suggested android app. The results prove that the proposed system is a scalable and most cost-effective way for digital notice boards in educational institutions and public places. The future versions of the system can include support for multimedia (jpg, mp3, mp4, ppt etc.) and basic AI features.