Arduino Uno is one of the best Arduino boards for beginners. It's extremely user-friendly while allowing for exceptional connectivity. On the input/output (I/O) side, you'll find an onboard LED indicator, USB B controller, and superb power handling for projects requiring an external power jack. Arduino Uno kits often target beginners, coming bundled with an Arduino Uno board, LEDs, servo motors, and everything needed for getting started with an Arduino. Devices such as the Elecrow smart plant watering system truly exhibit the prowess of the Arduino Uno. There's an LCD screen attached, with moisture sensors, a water input/output valve, and barrel jack power connector as well as USB port. This DIY irrigation system reads soil moisture levels and automatically doles out water Just because the Arduino Uno offers an understandable platform for Arduino beginners doesn't mean it's a less capable board.
Arduino Nano, on the other hand, features a small USB port, and lacks a power jack. However, it's great for breadboard projects. With an 18mm x 45mm stance, the small form factor Arduino Nano remains best-suited for portable Arduino projects and Internet of Things (IoT) endeavors which demand low power and a tiny footprint. The Nano is a fantastic board for beginners like the Arduino Uno. Arduino Nano projects range from a matrix keypad using Visuino to an automatic smart plant pot that's 3D printable and features an integrated water tank, soil moisture sensor, pump, status LED, and water level sensor with an Arduino Nano.
Arduino Mega is a great pick for more advanced Arduino enthusiasts. Onboard, you'll find digital and analog pins. The Arduino Mega sports 16 analog pins, essential for outputting analog signals. Plus, Arduino Mega digital I/O pins may be as high as 50 or more. Aside from stellar connectivity, the Arduino Mega features more RAM and ROM than the Arduino Uno and Arduino Nano. Onboard, you'll find 256KB of ROM, with 8KB of SRAM. The Mega is one of the best Arduinos for experts. Showcasing Arduino Mega functionality are advanced projects such as an Arduino-controlled robot lawnmower.
Arduino Due offers a premium experience for Arduino gurus. Just as the Mega touts extra ROM and RAM, so too does the Due. With 512KB of ROM and a beefy 96KB of RAM, it's able to tackle large, memory-intensive programs. Again, it's an Arduino board better suited for advanced projects which demand I/O connectivity and more memory. The Arduino Due functions for projects such as a persistence of vision (PoV) cylinder or an Arduino TFT interfacing project.
ATmega328-based microcontroller boasts 14 digital I/O pins, 6 analog outputs, a 16 MHz crystal oscillator, power jack, and an RJ45 connector, or Ethernet port. Its optional Power over Ethernet (PoE) module may be tacked on for an Ethernet-powered board. There's an incorporated WizNet W5100 TCP/IP embedded Ethernet controller, making this a solid board for advanced Arduino users. For Internet of Things projects, the Arduino Ethernet Rev 3 not only hosts an Ethernet header, but there's a built-in microSD card reader for networked files.
DIY audio components, the Arduino MKR Zero is your best bet. With its SD card connector for hosting audio files, and its SPI and I2S interfaces, the Arduino MKR Zero offers the perfect Arduino hardware for working with audio files. The I2S electrical serial bus is an interface for connecting digital audio devices. With a small form factor, the Arduino MKR Zero lends loads of functionality, particularly for audio projects, and even handles audio file playback sans additional hardware. Moreover, Arduino libraries allow for audio data analysis.