Modifications

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== Feather M0 Express in details ==

== Feather M0 Express ==

The Feather M0 use the ATSAMD21G18 ARM Cortex M0+ processor with 3.3V logic and 48 MHz. This chip embed 256K of FLASH (8x more than the Atmega328/Uno) and has 32K RAM (16x more than UNO)!  

The Feather M0 use the ATSAMD21G18 ARM Cortex M0+ processor with 3.3V logic and 48 MHz. This chip embed 256K of FLASH (8x more than the Atmega328/Uno) and has 32K RAM (16x more than UNO)!  

* '''#13''' - GPIO #13, also connected to the '''red LED''' near if the microUSB située près du connecteur micro USB.

* '''#13''' - GPIO #13, also connected to the '''red LED''' near if the microUSB située près du connecteur micro USB.

* '''A0''' - '''Analog input A0''' and also a real '''Analog output''' since the DAC is wired on this pin (DAC = Digital to Analog Converter). The output voltage can be set with a value between 0 and 3.3V. Unlike the PWM output, this pin is {{underline|a real analog output}}. So you can experiment with signal generator.

* '''A0''' - '''Analog input A0''' and also a real '''Analog output''' since the DAC is wired on this pin (DAC = Digital to Analog Converter). The output voltage can be set with a value between 0 and 3.3V. Unlike the PWM output, this pin is {{underline|a real analog output}}. So you can experiment with signal generator.

* '''A1 to A5''' - each pin is an Analog input and also a Digital Input/Output.

* '''A1 to A5''' - each pin is an Analog input and also a Digital Input/Output.<br />It is a 12-bit analog inputs (so with values from 0 to 4095)

* '''SCK/MOSI/MISO''' - those are the pins for the hardware SPI bus. The pin can also been used to as Digital Input/Output.  

* '''SCK/MOSI/MISO''' - those are the pins for the hardware SPI bus. The pin can also been used to as Digital Input/Output.