This project presents the design and implementation of a secure RF-based wireless electronic notice board, developed to enable reliable, real-time information transmission ion across environments where secure and controlled communication is critical, within a range of 50 to 200 metres.
To address inherent risks in wireless communication, the system incorporates basic security measures to reduce unauthorised access, signal interference, and message tampering. Structured data encoding and controlled transmission ensure that only authorised signals are received and displayed.
The system comprises a transmitter unit for message input and encoding, and a receiver unit for integrated with the LED display. Overall, the project demonstrates a practical application of foundational cyber security principles in wireless communication systems.
The design of the Wireless Electronic Notice Board consists of two modules; transmitter module and receiver module. There are five parts in the transmitter module which consists of keypad, Liquid Crystal Display (LCD), Microcontroller, encoder and transmitter and four parts in the receiver module consisting of receiver, decoder, microcontroller, and LED dot matrix. The design of the receiver circuit was done implementing key components such as the RTC and the HEAT SENSOR. The circuit design also has a backup battery that comes up when the power from the mains goes off. Assembly language was used to program the microcontroller.
Orumwense, A. (2019). Design and Security Architecture of an RF-Based Wireless LED Display System for Secure Data Transmission. Afribary. Retrieved from https://afribary.com/index.php/works/complete-project-work
Orumwense, Austin "Design and Security Architecture of an RF-Based Wireless LED Display System for Secure Data Transmission" Afribary. Afribary, 05 Mar. 2019, https://afribary.com/index.php/works/complete-project-work. Accessed 01 Apr. 2026.
Orumwense, Austin . "Design and Security Architecture of an RF-Based Wireless LED Display System for Secure Data Transmission". Afribary, Afribary, 05 Mar. 2019. Web. 01 Apr. 2026. < https://afribary.com/index.php/works/complete-project-work >.
Orumwense, Austin . "Design and Security Architecture of an RF-Based Wireless LED Display System for Secure Data Transmission" Afribary (2019). Accessed April 01, 2026. https://afribary.com/index.php/works/complete-project-work