The main theme of this paper is to develop an embedded based system to send messages from black spot area using LORA and GSM. Black spot is nothing but an area where we could not find any network signals. Even in cities also sometimes we may not have signals inside the room. Through such areas sending or calling is not possible. This black spot is used for security purposes. Military regiments are signal jammed areas where the communication is impossible, so the people there use this kind of communication. This project is also used in undercover operations where the communication takes place in this process. Here the project built is useful to create signals for sending messages in the black spot through the two different communication modules i.e., LORA and GSM. In the project work different frequencies for individual modules are likely to be used such as GSM (1800MHz) and LORA (2.4GHz). By using these two wireless communication devices we create communication link in between LORA and GSM by which a message will be sent in the form of SMS through the Bluetooth module.

Features:

 Dual Communication Modules:

• Utilizes both LoRa (Long Range) and GSM modules to provide robust communication capabilities, ensuring messages can be sent from areas lacking traditional network signals.

 Long-Range Capability:

• LoRa technology allows for long-range communication (up to several kilometers), making it effective for remote or difficult-to-reach locations.

 SMS Functionality:

• Enables sending messages in the form of SMS through the GSM module, ensuring that recipients receive important information even in low-signal areas.

 Bluetooth Integration:

• Incorporates a Bluetooth module to facilitate local communication, allowing users to connect and send messages easily from nearby devices.

 Frequency Utilization:

• Uses specific frequencies for GSM (1800 MHz) and LoRa (2.4 GHz), optimizing the performance of each module according to their respective communication protocols.

 Robustness in Signal-Jammed Environments:

• Designed for use in military regiments and undercover operations, providing reliable communication even in areas where signals are often jammed.

 User-Friendly Interface:

• Allows users to send messages through a simple interface, making it accessible for individuals with varying levels of technical expertise.

 Security Features:

• Enhances security during communication in sensitive operations, ensuring that information can be transmitted without reliance on conventional networks.

 Low Power Consumption:

• The system is optimized for low power usage, making it suitable for portable applications and long-term deployments in remote areas.

 Scalability:

• Can be expanded to include additional communication modules or sensors, allowing for future enhancements and adaptations to specific operational needs.

This project provides learning’s on the following advancements:

1. LoRa and Bluetooth working.
2. Interfacing LCD to the microcontroller.
3. Interfacing modules to the microcontroller.
4. Embedded C programming.

The major building blocks of this project are:

1. Adapter power Supply.
2. TWO PIC Micro Controllers.
3. HC-05 Bluetooth module.
4. Two LCD displays.
5. Two Buzzers.
6. Two LoRa Modules.
7. GSM.

    Software’s Used:

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Microcontroller.
3. Express SCH for Circuit design.

  Technology Used:

• LoRa technology.

 

Block Diagram:    

video: