Meanwhile Arduino Mega (ATmega2560) can support a relatively high capacity of up to 256K.Įspecially, the digital photo album program is quite bulky as including diverse graphic libraries are required as shown in the previous Arduino project below.Īs details are described in the Instructable above, interfacing TFT LCD along with an integrated SD reader is a little bit tricky. Let's look at the circuit in more detail from the next step.įrom the beginning, I consider connecting all possible sensors such as DHT22, atmospheric pressure sensor, noise, light sensors, and so on.Īlso, I'm trying to integrate diverse functionalities such as clock and digital photograph album along with weather station.Īs a result, Arduino Uno (ATmega328P) is not appropriate for this project as flash memory is just 32K. ![]() If more data is collected in the next year, maybe I can find the general climate trends of my house in Korea. The maximum temperature is Celcius 34 degrees and the lowest is 19 degrees.Īs Korea is located in the mid-latitude region, even room temperature is following outdoor atmospheric temperature.īecause no air conditioner is installed in my room, I spent hot summer from July 10th to 16th August.įrom the 14th of November, cold winter is starting and room temperature also falling a minimum of 19 degrees. Measuring started on 18th April 2021 and the result was compiled on 11th December 2021.Īll sensors were accessed every 15 seconds and a total of 650,000 records are collected during 237 days.Īmong the diverse weather info, and only the temperature data summary is shown in the graph above. When looking at more detail about weather station functionality, the picture above shows long-term indoor room temperature change trends. Let's look at more details of the weather station circuit. When humidity drops drastically (such as less than 40%) on any day, I turned on a humidifier to prevent sore throat the next morning.Īnyway, it's become a very useful device for my everyday living. When it's a little bit low pressure, I'm checking the weather app of my smartphone to know whether it's raining today or not.Īnd for fun, I can understand the long-term indoor environment changes in my room in terms of temperature, humidity, and air pressure. This is a common weather station circuit that shows temperature, humidity, and air pressure information on LCD using an Arduino Mega board.Īll the weather data captured by sensors are recorded to SD card storage along with the timestamp.īut to enhance the device's usefulness, clock and digital album functionalities are also included with the weather station.Įvery weekdays morning, I'm checking the time now on the LCD until go out for catching the bus going to my office.Īlso checking atmospheric pressure is also helpful to look at its high or low pressure. For more information on the Uno, check out this article.Among the previous Arduino project outcomes, this one becomes the most useful and continually utilized for several months until today. The Arduino Mega 2560 is a fantastic option for use in prototyping with ease, especially for 3D printers and robotics, where the Uno just doesn’t hold up. The Mega’s shield selection includes any shield compatible with the Arduino Duemilanove and Diecimila. Using a shield gives your Mega board display options, Wi-Fi connectivity or even video game emulation software with relative ease. These preassembled PCBs interface directly into the Mega’s headers and give the board incredible capabilities in a condensed package. With it, anyone can add to or use the massive selection of codes to provide easy access to a world of programming possibilities.Īnother prominent feature of all Arduino boards, including the Mega, are the Arduino shields. ![]() ![]() ![]() The open-source coding terminal has a variety of features that make it accessible to both novices and programming gurus alike, most notably the IDE’s associated library of projects and other syntaxes created by the massive community of Arduino users. Like the Uno, the Mega operates in the Arduino Integrated Development Environment (IDE). Arduino Mega 2560 Pinout DiagramĪs far as other hardware on the Mega goes, it also touts four serial ports for general attachments, a USB connection (with a dedicated ATmega16U2 processor for interfacing with your computer), a reset button and a power supply port. See the graphic below for a (dare I say) mega-map of the Mega’s pins. Because of its brawnier processor, the Mega has 54 digital I/O pins (15 of which can provide PWM output) and 16 analog pins, which is almost four times that of its little brother, the Uno. Thanks to the ATmega2560 (and its associated crystal oscillator), the Arduino Mega sports 16 MHz clocking speed, as well as 256 KB of flash, 8 KB of SRAM and 4 KB of EEPROM. As stated before, the brain behind the Arduino Mega is the ATmega2560.
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