Main Arduino Boards

ArduinouCVoltageIOFlashRam
UnoATmega328P5V1432kB2kB
NanoATmega3285V2232kB2kB
Leonardo ATmega32u45V2032kB2.5kB
MicroATmega32U45V2032kB2.5kB
EsploraATmega32u45V32kB2.5kB
Mega 2560ATmega25605V54256kB8kB
101 Intel Curie 3.3V14196kB24kB

Zero
ATSAMD21G18
32-Bit ARM

3.3V

20

256kB

32kB
DueAT91SAM3X8E
32-Bit ARM
3.3V54512kB96kB
MKR ZEROSAMD21 Cortex-M0+
32-Bit ARM
3.3V22256kB32kB
MKR GSM 1400SAMD21 Cortex-M0+
32-Bit ARM
3.3V21256kB32kB
USEFUL?
We benefit hugely from resources on the web so we decided we should try and give back some of our knowledge and resources to the community by opening up many of our company’s internal notes and libraries through mini sites like this. We hope you find the site helpful.
Please feel free to comment if you can add help to this page or point out issues and solutions you have found, but please note that we do not provide support on this site. If you need help with a problem please use one of the many online forums.