Build a Long-Range Wireless Remote Data Monitoring System

The Long-Range Wireless Remote Data Monitoring System operates by dividing tasks between a remote sensing node and a local display station, both managed by Arduino microcontrollers. At the sensing node, environmental parameters are gathered continuously. A DHT11 sensor module measures temperature and humidity, a soil moisture sensor module evaluates water content in soil, and an ambient light sensor utilizing a photoresistor (LDR) captures surrounding light levels. Resistors configured in voltage divider networks, such as the 1k, 2.2k, and 10k resistors, condition these analog signals to safe operational limits for the microcontroller's analog inputs. Once collected, the Arduino packages this environmental data for transmission. Communication between the remote node and the display station relies on a pair of HC12 wireless serial modules, which transmit the telemetry data over extended distances using radio frequencies. At the receiving end, the second Arduino captures the incoming data stream via the HC12 module and formats it for output. The processed information is then rendered visually onto a large 10.92cm SPI TFT LCD monitor, presenting real-time updates of the monitored environmental conditions. The entire system requires stable operation, supported by two 5V regulated power supplies that deliver steady voltage to the microcontrollers, sensors, communication modules, and display panel without risking electrical overstress. Jumper wires interconnect all components across the system.