Arduino Leonardo vs Uno

Difference Between Arduino Leonardo vs Uno

Uno is a suitable platform for early learners. It is used for multiple purposes which can also be used as a controller and directly powered from the USB battery or through an AC to DC adapter. It can be efficiently used for smaller projects. But Arduino Leonardo released a few years ago which gained more attention when compared to uno. The Arduino Leonardo is an ATmega 32U4 microcontroller with an inbuilt USB and a crystal oscillator. The key difference and comparisons between Arduino Leonardo and Uno are briefly explained in this article.

Head to Head Comparison between Arduino Leonardo vs Uno (Infographics)

Below are the top 14 differences between Arduino Leonardo vs Uno:

Key Differences between Arduino Leonardo vs Uno

Following are the key differences between Arduino Leonardo vs Uno:

The Architecture of Arduino Leonardo and Uno

The uno adapter uses the ATmega 328 chip controller and uses 9V to 12V. It receives 14 digital input pins, and output is obtained as pulse width modulation. The TX/RX has six analog input serial data pins. The 10 bits resolution is provided by the analog pins which signifies the 1024 different values when it is read by one. It is precise by 10 times of MIDI, which is generally a high resolution. Every pin can consume a minimum of 40mA current. The board has 32 KB and 2KB of flash memory and SRAM with EEPROM of 1KB. The programming is done in flash memory where the user can store the written data and variables. The SRAM is allocated for working memory. Hence it is perfectly adaptable for small scale purposes.

The architecture of Arduino Leonardo has input and output pins of 20 with 16 MHZ of the crystal oscillator. It posses an ICSO header, micro USB connection. the power jack and a reset button. So it is easy to connect it to a computer by a cable or DC adapter or battery. The communication of ATmega32u4 and inbuilt USB eliminates the need for additional communication. It enables the Arduino Leonardo to get connected to a computer as a hardware component such as mouse and keyboard. It has other inferences in the characteristics of the board.

The Market Standard for the Development of Boards

The Arduino Leonardo is released after Uno which gained the remarked industrial metrics for the development boards. It has the arrangement of unique pin header which makes it more compact and shielded in the market areas. It provides ease implementation and the standard specification made the uno a more popular where the other boards have the derivatives of it.

Popularity and User-Friendly

The tutorials and knowledge to learn Arduino Leonardo or uno are widespread. But when compared to Arduino Leonardo, the uno possess a huge community with firm support and the lessons of uno are easily accessible on cyberspace whereas Arduino Leonardo is not easily accessed as uno as it is not compactable and user-friendly. The board of uno has a rearranging fuse based on the USB port and it prevents the circuit from over-voltage. Even though all the circuits are built with inner protection, the fuse gives the additional protection of safety. If the USB port receives more than 500mA, there will be a connection crack until the excess voltage is eliminated.

Sustainability and Compatibility

Uno is famous for its many defencing shields which made it super fit in the board. Here the shields are developed to become more compatible and sustainable. The numerous many Arduino shields that may cause problems with Arduino Leonardo. All of the uno shields are not compact and operate with Arduino Leonardo which is a general voice raised in the Arduino committee.

Advantages of the Microcontrollers

Even though the uno has a huge community and popularity, it is expensive when compared to Arduino Leonardo. The performance and flexibility of Arduino Leonardo are better and no USB interface is required and gives more support in USB. The additional SRAM provides faster access to the processed data. The uno is used in prototyping of self-doing projects. The control of the developing project is based on its codes. It is used for designing basic circuits and automation systems..

Arduino Leonardo vs Uno Comparison Table

Let us look at the comparison table of Arduino Leonardo vs Uno.

Attributes	Arduino Leonardo	Uno
Microcontroller	The microcontroller used in Leo is ATmega32u4.	The microcontroller used in uno is ATmega328.
I/O digital pins	23 digital pins are used in the circuit. The ICSP header has three digital pins which are not repeated. The transmission and reception pin is 17 and 24.	The digital pins used in the circuit are 20. The ICSP header has three digital pins which are repeated.
Channels of pulse width modulation	There are seven channels.	There are six PWM channels.
Input pin for analog signals	Totally twelve pins are allocated as analog input pins.	There are six pins are allocated as analog input pins.
Allocation of flash memory	Flash memory of 32KB is allotted and for bootloader it uses 4KB.	Flash memory of 32KB is allotted and for bootloader it uses 0.5KB.
SRAM	The 2.5KB is used in SRAM.	2KB of memory is allotted in SRAM.
EEPROM	It is variable from 4096, 1024 or 512 bytes.	1KB of memory is allotted for EEPROM.
Clock speed	The clock speed is 16MHZ resonator.	The clock speed is 16MHZ crystal.
Reset button	It is operated with reset button.	It is operated with reset button.
Operating voltage	The advisable operating voltage ranges from 7V to 12V.	The advisable operating voltage ranges from 7V to 12V.
Power selection on USB	It provides partial power selection of USB.	It provides partial power selection of USB.
USB connector	The USB connector is type B.	The USB connector is type Micro-B.
Weightage	The weight of the circuit is 28g.	The weight of the circuit is 20g.
Ground pin	The access ground pin is four.	The access ground pin is four.

According to the requirement, the implementation of Arduino Leonardo and uno is selected in the circuits. Both the software are available as open-source and extensible. It offers a clear and simple programming environment. The hardware component of the microcontroller can be easily programmed which is used to design, develop, and test many complex electronic circuits and prototypes.

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