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Arduino Microcontroller Main Boards

Microcontrollers that support the Arduino framework come in an incredibly diverse range of form factors and abilities.

Most Arduino Projects will start with an Arduino Uno – due to its low cost and ease of use. It has built in header strips which allow easy connection  to the pins of the processor.

Typically, once you become more proficient or once you have a particular enclosure or project in mind, then its normal to move onto one of the more specialised boards. That could be a lilypad Arduino, which has been designed from the ground up to be used with e-textiles (or cosplay), or perhaps the Arduino Pro Mini, which houses a power house microcontroller in a form factor that would fit into a matchbox!

Because there are now just so many different boards, we have put together this table, which lists all the Arduino based boards we have in stock and the key features of each.

Processor Processor Voltage Supply Voltage Flash SRAM Digital I/O Pins PWM Pins Analogue Inputs Hardware Serial Ports Connectivity Notes and Special Features
Arduino Uno R3 (PPA000066) 16 MHz ATmega328P 5V 7-12V 32KB 2KB 14 6 6 1 USB 2.0
Uno R3 Clone (PPAC0022) 16 MHz ATmega328P 5V 7-12V 32KB 2KB 14 6 6 1 USB 2.0
Arduino Pro 328 (PPDEV-10915) 16MHz ATmega328 5V 5-12V 32KB 2KB 14 6 6 1
Arduino Pro Mini 328 (PPDEV-11114) 8MHz ATmega328P 3.3V 3.3-12V 32KB 2KB 14 6 8 1
Arduino compatible Pro Mini 5V Atmega328 (PPPAC0001) 16 MHz ATmega328 5V 5-12V 32KB 2KB 14 6 8
Arduino compatible Pro Micro (PPDEV-12640) 16MHz ATmega32U4 5V 6-16V 32KB 2.5KB 12 5 4 1 Micro-USB
Arduino Nano 3.0 (PPA000005) 16MHz ATmega328 5V 7-12V 32KB 2KB 14 6 8 1 USB Mini-B
Seeeduino XIAO (PP210032) 48MHz ARM Cortex-M0+ (SAMD21G18) 3.3V 256KB 32KB 14 10 11 USB Type-C
RedBoard (PPDEV-13975) 16 MHz ATmega328 5V 7-15V 32KB 2KB 14 6 6 USB Mini-B
RedBoard Qwiic (PPDEV-15123) 16MHz ATmega328P 3.3V/5V 7-15V 32KB 2KB 20 6 6 Micro-USB, Qwiic Connector
RedBoard Turbo (PPDEV-14812) 48MHz ARM Cortex-M0+ (SAMD21G18) 3.3V 3.5-6V 4MB 32KB 26 14 Micro-USB, Qwiic Connector
PJRC Teensy 3.2 (PPDEV-13736) 72MHz ARM Cortex-M4 3.3V 256KB 64KB 34 12 21 3 Micro-USB
PJRC Teensy 4.1 (PPDEV-16771) 600 MHz ARM Cortex-M7 3.3V 8MB 1MB 55 35 18 8 Micro-USB, USB Host
Arduino Mega 2560 Rev3 (PPA000067) 16MHz ATmega2560 5V 6-20V 256KB 8KB 54 15 16 4 USB 2.0
Adafruit 2000 Pro Trinket (PPADA2000) 16MHz ATmega328P 3.3V 7-15V 28KB 2KB 18 2 0 Micro-USB
Adafruit 3333 – Circuit Playground Express (PPADA3333) 48MHz ARM Cortex-M0+ (SAMD21G18) 3.3V 2MB 256KB 8 5 8 1 Micro-USB Able to run CircuitPython, Microsoft Make-Code and Javascript

Inbuilt sensors
LilyPad Arduino USB (PPDEV-12049) 8MHz ATmega32U4 3.3V 3.8-5V 32KB 2.5KB 9 4 4 Micro-USB Designed for wearable e-textiles technology
LilyPad Arduino 328 Main Board (PPDEV-13342) 16MHz ATmega328 2.7-5.5V 2.7-5.5V 16KB 1KB 14 6 6 Designed for wearable e-textiles technology
LilyPad Arduino Simple Board (PPDEV-10274) 16MHz ATmega328 2.7-5.5V 2.7-5.5V Designed for wearable e-textiles technology
Arduino MKR Zero (PPABX00012) 48MHz ARM Cortex-M0+ (SAMD21) 3.3V 5V 256KB 32KB 22 12 7 1 Micro-USB
ESP8266 Thing (PPWRL-13231) 3.3V Wi-Fi IoT
Qduino Mini (PPDEV-13614) 8MHz ATmega32U4 3.3V 32KB 2.5KB 26 7 12 1
Pro RF (PPWRL-15836) 48MHz ARM Cortex-M0+ (SAMD21) 3.3V 3.5-6V 265KB 32KB 4 4 5 Micro-USB, Qwiic Connector Wireless IoT
Pro Mini 168 (PPAC0023) 16MHz ATmega168 5V 5-12V 16KB 1KB 14 6 6
Pro Mini 328 (PPDEV-11113) 16MHz ATmega328P 5V 5-16V 32KB 2KB 22 6 8 1
RedBoard Edge (PPDEV-14525) 16MHz ATmega328 5V 7-15V 32KB 2KB 14 6 6 1 Micro-USB, Qwiic Connector
Arduino Fio (PPDEV-10116) 8MHz ATmega328P 3.3V 3.35-12V 32KB 2KB 22 6 8 1 USB Mini-B, Xbee Socket USB Mini for charging only
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