Actual-time environmental monitoring is more and more vital in agriculture, industrial automation, good properties, and healthcare. The true-time knowledge monitoring system measures and shows ambient temperature and humidity on a TFT show, together with the present time, utilizing an Arduino microcontroller.
The system combines a DHT (digital humidity and temperature) sensor for environmental readings with an RTC module (DS1307) for timekeeping. Information and time are repeatedly displayed on the TFT display with multicoloured graphics and a user-friendly interface. The Arduino reads sensor values and time knowledge at common intervals, updating the show each few seconds. Fig. 1 exhibits the prototype with a snapshot of the TFT show.
This compact, cost-effective, and correct system is well-suited for good properties, laboratories, greenhouses, and academic use. It additionally presents scope for growth into knowledge logging or wi-fi transmission for IoT-based purposes. Desk 1 lists the whole Invoice of Supplies.
| Desk 1: Invoice of Supplies | |
| Parts | Amount |
| Arduino Nano (MOD1) | 1 |
| DHT 11 sensor (S1) | 1 |
| RTC module (MOD2) | 1 |
| TFT show (MOD3) | 1 |
| USB cable | 1 |
Circuit and Working
Fig. 2 exhibits the circuit diagram of the real-time knowledge monitoring system utilizing a TFT show. It’s constructed round an Arduino Nano board (MOD1), DHT11 sensor (S1), RTC module (MOD2), TFT show (MOD3), and some different elements.
The DHT11 sensor module has three pins: Vcc, GND, and Out. The Vcc pin is related to the 5V output of the Arduino board, the GND pin is related to the widespread floor, and the output pin is related to the Arduino’s digital pin D2. A 10k pull-up resistor is related between the output pin and Vcc, as really helpful within the DHT sensor datasheet.
The RTC module has 4 pins: Vcc, GND, SDA, and SCL. Right here, the Vcc pin is related to 5V from the Arduino, whereas the SDA and SCL pins are related to Arduino pins A4 (SDA) and A5 (SCL), respectively.
The TFT LCD module has 9 interfacing pins, that are related to the Arduino Nano board as proven in Desk 2.
| Desk 2: Connections between TFT LCD and Arduino Nano | |
| TFT LCD Pin | Arduino Nano Pin |
| Vcc | 5V |
| Gnd | Gnd |
| LED/BL | 3.3V |
| CS | D10 |
| RST | D8 |
| DC | D9 |
| SDA | D11 |
| SCK | D13 |
The system shows the present room temperature and humidity together with the real-time clock on the TFT show in a transparent and user-friendly format. The RTC module (DS1307) communicates with the Arduino utilizing the I²C protocol and offers correct real-time knowledge within the HH:MM:SS format. This time data is repeatedly up to date and displayed on the prime of the TFT display, guaranteeing entry to the right time.
The DHT11 sensor is a digital good sensor that operates on a single-wire protocol, straight offering calibrated digital outputs for each temperature and humidity. The Arduino acts as the primary controller, studying knowledge from the DHT11 sensor at intervals of about two seconds. It processes the values and updates the show with the present temperature in levels Celsius (°C) and relative humidity in proportion (%RH).
By combining knowledge from each the RTC and DHT11 sensors, the Arduino ensures that the TFT show presents real-time temperature, humidity, and clock data concurrently. This integration makes the system compact, dependable, and environment friendly, offering a cheap strategy to monitor and show environmental situations repeatedly.
Arduino Code
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