Datasheet

Here are some of the updates you can look forward to when using Gemma M0:

Same size, form-factor, and pinout as classic Gemma

Updating ATtiny85 8-bit AVR for ATSAMD21E18 32-bit Cortex M0+

256KB Flash - 8x as much as 8 KB on ATtiny85

32 KB RAM - 64x as much as 512 bytes on ATtiny85

48 MHz 32 bit processor - 6x as fast as ATtiny85 (not even taking into account 32-bit speedups)

Native USB supported by every OS - can be used in Arduino or CircuitPython as USB serial console,

Keyboard/Mouse HID, even a little disk drive for storing Python scripts. (ATtiny85 does not have native USB)

Can be used with Arduino IDE or CircuitPython

Built in RGB DotStar LED

Three big-hole sew-pads can be used for conductive thread or alligator-clips for fast prototyping

Each I/O pad can be used for 12-bit analog input, or digital input/output with internally connected pullups

or pulldowns

We gave the M0 pads the exact same names as the original Gemma so all your existing Arduino code will

work exactly the same as-is without changes

True analog output on one I/O pad - can be used to play 10-bit quality audio clips

Two high speed PWM outputs on other two I/O Pads - for servos, LEDs, etc

All three pads can also be used as hardware capacitive touch sensors with no additional components

required

Can drive NeoPixels or DotStars on any pins, with enough memory to drive 8000+ pixels. DMA-NeoPixel

support on one pin (https://adafru.it/xYD)so you can drive pixels without having to spend any processor

time on it.

Native hardware I2C or Serial available on two pads so you can connect to any I2C or Serial device with

true hardware support (no annoying bit-banging)

Same Reset switch for starting your project code over

On/Off switch built in

JST battery connector for plugging in AAA's or LiPoly battery (no built-in LiPoly charging so it is safe to use with

NiMH/Alkalines)