MICROPROCESSORS
MICROCONTROLLERS
Arduino Microcontrollers
1. UNO Mini Limited Edition
is a miniature version of the classic Arduino UNO board. It is based on the
ATmega328P microcontroller, has USB-C® connector for programming and powering
the board, and pins available for connecting external
power sources. It also comes with the standard set of
female pin connectors, built-in LED, reset button and
everything else that the standard UNO have, but at 25% the
area size.
UNO Mini Limited Edition
Microcontroller
USB connector
ATmega328P
USB-C
Pins
Built-in LED Pin – 13
Digital I/O Pins – 14
Analog input pins – 6
PWM pins – 6
Communication
Power
Clock speed
UART
I2C
SPI
I/O Voltage - 5V
Input voltage (nominal) - 7-12V
DC Current per I/O Pin - 20 mA
Main Processor - ATmega328P 16 MHz
USB-Serial Processor - ATmega16U2 16
MHz
Memory
Weight
Width
Length
2KB SRAM, 32KB FLASH, 1KB EEPROM
8.05 g
26.70 mm
34.20 mm
2. Arduino Nano 33 BLE
The Arduino Nano 33 BLE is an upgraded version of the classic model, that uses
nRF52840 microcontroller with 1MB CPU Flash Memory. It offers Bluetooth Low Energy
connectivity, making it ideal for various projects. Built
on the Arm Mbed OS it is suitable for beginners,
makers, and professionals interested in Bluetooth Low
Energy enabled projects. Additionally, it features a 9axis inertial measurement unit, making it suitable for
wearable projects.
Arduino Nano 33 BLE
Microcontroller
USB connector
Pins
nRF52840
Micro USB
Built-in LED Pin – 13
Digital I/O Pins – 14
Analog input pins – 8
PWM pins – 5
External interrupts - All digital pins
Connectivity
Bluetooth - NINA-B306
Sensors
IMU - LSM9DS1
Communication
Power
UART
I2C
SPI
I/O Voltage - 3.3V
Input voltage (nominal) - 5-18V
DC Current per I/O Pin - 10 mA
Clock speed
Processor - nRF52840 64MHz
Memory
Weight
Width
Length
256 KB SRAM, 1MB flash
5g
18 mm
45 mm
3. The Arduino MKR Zero is a development board for music makers! With an SD card
holder and dedicated SPI interfaces (SPI1), you are able to play music files without extra
hardware. Featuring the Arm Cortex-M0 32-bit SAMD21 processor and a microSD card
holder with dedicated SPI interfaces, is an
excellent choice for music projects. As part of
the MKR family, it offers compatibility with a
wide range of shields for effortless project
development.
Arduino MKR Zero
Microcontroller
USB connector
Pins
Communication
Power
Clock speed
SAMD21 Cortex-M0+ 32bit low power ARM
MCU
Micro USB (USB-B)
Built-in LED Pin – 32
Digital I/O Pins – 8
Analog input pins – 7
Analog Output Pins – 1
PWM pins – 13
External interrupts – 10
UART
I2C
SPI
I/O Voltage - 3.3V
Input voltage (nominal) - 5-5.5V
DC Current per I/O Pin - 7 mA
Supported battery - Li-Po single cell, 3.7V,
700mAh minimum
Battery connector - JST PH
Processor - 48 MHz
RTC - 32.768 kHz
Memory
Weight
Width
Length
SAMD21G18A - 256KB Flash, 32KB SRAM
32g
25 mm
61.5 mm
4. Arduino UNO Wi-Fi Rev 2
The Arduino UNO Wi-Fi Rev2 is a versatile IoT solution with the standard UNO family
form factor. It is suitable for creating sensor networks for office or home routers, as well
as Bluetooth Low Energy devices. Powered by the
ATmega4809 8-bit microcontroller, it features the
secure ATECC608 crypto chip accelerator and includes
the LSM6DS3TR IMU and NINA-W102 Wi-Fi & Bluetooth
module from u-Blox.
Arduino UNO Wi-Fi Rev 2
Microcontroller
USB connector
Pins
Connectivity
Sensors
Communication
Power
Clock speed
ATmega4809
USB-B
Built-in LED Pin – 25
Digital I/O Pins – 14
Analog input pins – 6
PWM pins – 5
Bluetooth
Wi-Fi
IMU
UART
I2C
SPI
I/O Voltage - 5V
Input voltage (nominal) – 6-20V
DC Current per I/O Pin - 20 mA
Power Supply Connector - Barrel Plug
Processor - ATmega4809 16
Memory
Weight
Width
Length
ATmega4809 - 6KB SRAM, 48KB flash, 256
bytes EEPROM
Nina W102 uBlox module - 448 KB ROM,
520KB SRAM, 2MB Flash
25g
53.4 mm
68.6 mm
5. The Arduino Due is a microcontroller board based on the Atmel SAM3X8E ARM CortexM3 CPU, making it the first Arduino board with a 32-bit ARM core microcontroller. It
boasts 54 digital input/output pins, 12 analog
inputs, and 4 UARTs, making it ideal for larger
scale Arduino projects. Additionally, it features a
84 MHz clock, USB OTG capability, digital to
analog conversion, and various other useful
components.
Arduino Due
Microcontroller
USB connector
Pins
Communication
Power
AT91SAM3X8E
Micro USB
Built-in LED Pin – 13
Digital I/O Pins – 54
Analog input pins – 12
Analog output pins – 2
PWM pins – 12
CAN (ext. transceiver needed)
UART
I2C
SPI
I/O Voltage – 3.3V
Input voltage (nominal) – 7-12V
DC Current per I/O Pin (group 1) - 9 mA
DC Current per I/O pin (group 2) - 3 mA
Power Supply Connector - Barrel Plug
Total DC Output Current on all I/O lines - 130 mA
Clock speed
Processor - AT91SAM3X8E 84 MHz
Memory
Weight
AT91SAM3X8E - 96KB SRAM, 512KB flash
36g
Width
Length
53.3 mm
101.5 mm
6. Arduino Nano 33 IoT
The Arduino Nano 33 IoT is designed for basic IoT and pico-network applications,
featuring the Arm Cortex-M0 32-bit SAMD21 processor, u-blox NINA-W102 Wi-Fi
module, and ECC608A crypto-chip for
security. It is suitable for building sensor
networks connected to routers or creating
Bluetooth Low Energy devices. This board
is Arduino's smallest for IoT projects.
Arduino Nano 33 IoT
Microcontroller
USB connector
Pins
Connectivity
Sensors
Communication
SAMD21 Cortex®-M0+ 32bit low power ARM
MCU
Micro USB
Built-in LED Pin – 13
Digital I/O Pins – 22
Analog input pins – 8
PWM pins – 5
External interrupts – All digital pins
Bluetooth
Wi-Fi
IMU
UART
I2C
SPI
Power
I/O Voltage – 3.3V
Input voltage (nominal) – 5-18V
DC Current per I/O Pin - 7 mA
Clock speed
Processor - SAMD21G18A 48MHz
Memory
SAMD21G18A - 256 KB SRAM, 1MB flash
Nina W102 uBlox module - 448 KB ROM,
520KB SRAM, 2MB Flash
Weight
Width
Length
5gr
18 mm
45 mm
7. Arduino MKR 1000 WiFi
The Arduino MKR 1000 WiFi is an ideal choice for beginners, makers, and
professionals who want to explore Internet of Things (IoT) applications. It is designed
with the popular Arm Cortex-M0 32-bit
SAMD21 processor and the ECC508 cryptochip for enhanced security. Part of the MKR
family, this board offers compatibility with a
wide range of shields for effortless project
development. Whether setting up a sensor
network or building a smart home, the MKR
1000 WiFi simplifies the journey into IoT and
pico-network application design.
Arduino MKR 1000 WiFi
Microcontroller
USB connector
Pins
Connectivity
Communication
Power
Clock speed
SAMD21 Cortex-M0+ 32bit low power ARM MCU
Micro USB(USB-B)
Built-in LED Pin – 6
Digital I/O Pins – 8
Analog input pins – 7 (ADC 8/10/12 bit)
Analog output pins – 1 (DAC 10 bit)
PWM pins – 12
External interrupts - 10
Wi-Fi
Secure element - ATECC508A
UART
I2C
SPI
I/O Voltage – 3.3V
Input voltage (nominal) – 5-5.5V
DC Current per I/O Pin - 7 mA
Supported battery - Li-Po Single Cell, 3.7V,
1024mAh Minimum
Battery connector - JST PH
Processor - 48 MHz
RTC - 32.768 kHz
Memory
Weight
Width
Length
SAMD21G18A - 256KB Flash, 32KB SRAM
32g
25 mm
61.5 mm
8. Arduino Micro
The Micro is a microcontroller board based on the ATmega32U4, developed in
conjunction with Adafruit. It runs on an ATmega32u4 processor and features native
USB communication. The board can be configured
via software to be recognized as a standard
Arduino, a mouse, or a keyboard. It has 20 digital
input/output pins, a 16 MHz crystal oscillator, a
microUSB connection, an ICSP header, and a
reset button. The ATmega32U4 has built-in USB
communication, eliminating the need for a
secondary processor. This allows the Micro to appear to a connected computer as a
mouse and keyboard, in addition to a virtual (CDC) serial / COM port. The form factor
of the board enables it to be easily placed on a breadboard, and it contains everything
needed to support the microcontroller; simply connect it to a computer with a micro
USB cable to get started.
Arduino Micro
Microcontroller
USB connector
Pins
Communication
ATmega32u4
Micro USB
Built-in LED Pin – 13
Digital I/O Pins – 20
Analog input pins – 12
PWM pins – 7
UART
I2C
SPI
Power
I/O Voltage – 5V
Input voltage (nominal) – 7-12V
DC Current per I/O Pin - 10 mA
Clock speed
Processor - ATmega32U4 16 MHz
Memory
ATmega328P - 2.5KB SRAM, 32KB FLASH, 1KB
EEPROM
13g
Weight
Width
Length
18 mm
48 mm
9. Arduino Leonardo
The Arduino Leonardo is a unique microcontroller board with a built-in USB
communication feature, eliminating the need for a secondary processor. It can function as a
mouse, keyboard, and virtual serial/COM port
when connected to a computer. The board is
based on the ATmega32u4 and includes 20
digital input/output pins, a 16 MHz crystal
oscillator, micro USB connection, power jack,
ICSP header, and a reset button. It can be
powered by a USB cable, AC-to-DC adapter, or
battery.
Arduino Leonardo
Microcontroller
USB connector
Pins
Communication
Power
ATmega32u4
Micro USB (USB-B)
Built-in LED Pin – 13
Digital I/O Pins – 20
Analog input pins – 12
PWM pins – 7
UART
I2C
SPI
I/O Voltage – 5V
Input voltage (nominal) – 7-12V
DC Current per I/O Pin - 10 mA
Power Supply Connector - Barrel Plug
Clock speed
Processor - ATmega32U4 16 MHz
Memory
ATmega328P - 2.5KB SRAM, 32KB FLASH, 1KB
EEPROM
20g
Weight
Width
Length
53.3 mm
68.6 mm
10. Arduino Nano Every
The Nano Every is Arduino's smallest board, measuring only 45x18mm and weighing
under 5 g. Its small size and affordable price make it ideal for wearable inventions, low -cost
robotics, and interactive projects. The board
features the ATMega4809 processor, providing
48KB of CPU Flash memory and a clock speed of
20 MHz, making it more powerful than the classic
Arduino Nano while sharing the same pinout.
Arduino Nano Every
Microcontroller
USB connector
Pins
Communication
ATMega4809
Micro USB
Built-in LED Pin – 13
Digital I/O Pins – 22
Analog input pins – 8
PWM pins – 5
UART
I2C
SPI
Power
I/O Voltage – 5V
Input voltage (nominal) – 7-21V
DC Current per I/O Pin - 15 mA
Clock speed
Processor - ATMega4809 16 MHz
Memory
ATmega328P - 6KB SRAM, 48KB flash 256 byte
EEPROM
5gr
18 mm
45 mm
Weight
Width
Length
Arduino Shield
1. GIGA Display Shield
The GIGA Display Shield is a touch screen solution designed for easy deployment of
UI and visual solutions to GIGA R1 WiFi projects. It features an 800x480 RGB touch display
and supports various UI building frameworks. Equipped with a 3.97” 480x800 RGB touch
screen, digital microphone, 6-axis IMU, and RGB LED, the shield can be seamlessly mounted
on the GIGA R1 WiFi board. Leveraging the GIGA R1 WiFi's 480 MHz microcontroller, users
can create powerful UIs, interactive 3D animations, display camera feed, and more.
Additionally, the shield is compatible with a wide range of graphics libraries, including LVGL,
GFX, and Arduino Graphics.
GIGA Display Shield
Connector
Display (KD040WVFID02601-C025A)
Sensors
Pins
Power
Camera
Display Video
Display Touch
Size - 3.97”
Resolution - 480x800 RGB
Color - 16.7 million
Touch Mode - Five points and Gestures
Interface - I2C
IMU
Microphone
LED - 1 RGB LED (I2C)
Circuit operating voltage - 3.3 V
Width
Length
80 mm
106 mm
2. MKR ENV Shield
The MKR ENV Shield is an ideal addition to the MKR family series, offering
temperature, humidity, light, and pressure sensing capabilities. It features an easy-touse library for data acquisition and an SD card slot for offline data logging. Equipped
with three sensors, including LPS22HB, HTS221, and TEMT6000, this shield is perfect
for real-time data capturing projects and is well-suited for beginners. Its components
are designed to operate in temperatures ranging from -40 °C to +120 °C.
MKR ENV Shield
Compatibility
Communication)
Chip Select Pin (SPI)
Device Ready Pin (I2C)
Storage
Sensors
Weight
Width
Length
MKR
SPI and I2C
D4
LPS22HB on D7, HTS221 on D6
Micro SD card slot
Temperature - 15-40 (celsius)
Humidity - 20-80% rH (relative humidity)
Barometric pressure - 260-1260 hPa (hectopascal)
Ambient light - Max 650 LUX
32 g
27 mm
68.6 mm
3. MKR GPS Shield
The MKR GPS Shield is based on the u-blox SAM-M8Q GNSS (Global Navigation
Satellite System) module. It can be used to add GPS to any of your MKR boards.
MKR GPS Shield
Communication
GPS Module
Power
Weight
Width
Length
Serial / I2C (over ESLOV only) / DCC
Eslov
Input voltage – 3.3V
Operating Voltage- 3.3V
Maximum Current - 2.5A
Backup battery - CR1216
14g
25 mm
45 mm
4. MKR RGB Shield
The MKR RGB Shield is a great for creating simple light installations out of the box!
With 84 programmable RGBs in a 12x7 matrix, you can use it to create scrolling texts,
create simple animations or even use it to create retro games.
MKR RGB Shield
Communication
LEDs
Power
Weight
Width
Length
SDI (Serial Data Input)
Type - APA102
Count - 84
Color - RGB
Input voltage – 5 V
Operating Voltage- 3.3V
Maximum Current - 2.5A
External power source - Solderable
32g
27 mm
61.5 mm
5. MKR CAN Shield
The MKR CAN Shield is a valuable addition to MKR family boards, providing a
connection to the widely used CAN (Controller Area Network) bus in the automotive
industry. It is based on the MCP2515 CAN controller and the TJA1049 CAN
transceiver, enabling connectivity to existing CAN systems when mounted on a MKR
family board. Additionally, it incorporates the TPS54232 buck converter from Texas
Instruments.
MKR CAN Shield
Communication
Chip Select Pin (SPI)
Integrated circuits
Power
Weight
Width
Length
SPI
D3
Controller
Transceiver
Buck converter
Operating Voltage- 3.3V
Vin (screw connector) – 7 – 24 V
Vin (header) - 5 V
25 g
27 mm
68.6 mm
6. Ethernet Shield Rev2
The Arduino Ethernet Shield 2 allows for quick internet connection with an Arduino
board. Its open-source nature enables full understanding and customization of the
platform. Additionally, it is TinkerKit compatible, allowing for easy project creation with
TinkerKit modules.
Ethernet Shield Rev2
Compatibility
Ethernet
Storage
UNO, MEGA
Connector - RJ45
Controller - W5500
Speed - 10/100 Mbps
Communication - SPI
Internal memory - 32KB
Maximum sockets - 8 individual
Supported protocols - IPv4, ICMP, TCP, UDP, ARP,
IGMP, PPPoE, MQTT
Micro SD card slot
Power
Operating Voltage- 5 V
Connectors
TinkerKit – 6x
7. Motor Shield Rev3
The Arduino Motor Shield, based on the L298, is a dual full-bridge driver
designed to control inductive loads like relays, solenoids, DC, and stepping motors. It
allows independent control of the speed and direction of two DC motors with an
Arduino board. Additionally, it enables the measurement of motor current absorption
and is TinkerKit compatible, facilitating quick project creation by plugging TinkerKit
modules to the board.
Motor Shield Rev3
Compatibility
Status LEDs
Storage
UNO
2x per channel
Micro SD card slot
Power
Operating Voltage- 5 – 12 V
Max current – 2A per channel or 4A max (with
external power supply)
Max voltage (VIN) – 18V
Connectors
TinkerKit – 6x
Screw terminals
8. MKR MEM Shield
The MKR MEM Shield enables the addition of 2 MB of flash memory and the storage of
larger files on a Micro SD card. Additionally, it features a prototyping area for
integrating smaller displays, sensors, actuators, and more. It is compatible with all MKR
family boards.
MKR MEM Shield
Communication
Chip Select Pin (SPI)
Features
SPI
MicroSD on D4, Flash on D%
Storage - Micro SD card slot
Flash memory - 2MB (W25Q16)
Prototyping area
Power
Operating Voltage- 3.3V
Width
Length
27 mm
61 mm
9. MKR 485 Shield
The MKR 485 Shield allows seamless communication with legacy industrial systems
using the RS-485 protocol. It can be easily mounted on a MKR family board,
transforming old local systems into modern IoT systems. Based on the MAXIM
MAX3157 transceiver, the shield ensures data rates of up to 250kbps. It offers the
flexibility to switch between half-duplex and full-duplex communication and features
the TPS54232 buck converter from Texas Instruments.
MKR 485 Shield
Protocol
Interface
Operating mode
Integrated circuits
RS485
Serial (TXP on D7, RXP on D6)
Isolated half / full duplex (switchable)
Transceiver
Buck converter
Power
Operating Voltage- 3.3V
Vin (screw connector) - 7-24V
Vin (header) - 5V
Weight
Width
Length
25 g
27 mm
68.6 mm
10. MKR Therm Shield
The MKR Therm Shield is a great addon for MKR family boards, and allows you to
connect high quality thermocouplers, and can calculate temperatures from -200 °C to
+700 °C. An ideal solution to use for ovens, freezers, smokers and similar
environments.
MKR Therm Shield
Communication
Chip Select Pin (SPI)
1-Wire Pin
Digital converter
Connectors
Operating Temperature
Power
Weight
Width
Length
SPI and 1-Wire
A3
D0
MAX31855
K-type
Screw terminals
DS18X - Solderable
-200°C to +700°C (for thermocoupler)
Operating Voltage- 3.3V
Vin (screw connector) – 7 – 24 V
Vin (header) - 5 V
25 g
27 mm
68.6 mm
REFERENCES: (pls indicate it below using APA format)
Arduino hardware. (n.d.). Arduino. https://www.arduino.cc/en/hardware
Blog, M. (2023, April 28). Best Arduino Boards 2023 : History, Selection, comparison. The
Mechatronics Blog » Exploring Electro-Mechanics.
https://www.themechatronicsblog.com/2023/04/best-arduino-boards-2023-history-usecopmarision-all-boards-explianed.html?m=1