diff --git a/klippy/pins.py b/klippy/pins.py
index 0b6bc5ff..abca279e 100644
--- a/klippy/pins.py
+++ b/klippy/pins.py
@@ -44,7 +44,7 @@ MCU_PINS = {
     "at90usb1286": port_pins(6), "at90usb646": port_pins(6),
     "atmega32u4": port_pins(6),
     "atmega1280": port_pins(12), "atmega2560": port_pins(12),
-    "sam3x8e": port_pins(4, 32),
+    "sam3x8e": port_pins(4, 32), "sam3x8c": port_pins(2, 32),
     "sam4s8c": port_pins(3, 32), "sam4e8e" : port_pins(5, 32),
     "samd21g": port_pins(2, 32),
     "stm32f103": port_pins(5, 16),
diff --git a/src/atsam/Kconfig b/src/atsam/Kconfig
index 9aec3821..03a86858 100644
--- a/src/atsam/Kconfig
+++ b/src/atsam/Kconfig
@@ -20,6 +20,9 @@ choice
     config MACH_SAM3X8E
         bool "SAM3x8e (Arduino Due)"
         select MACH_SAM3X
+    config MACH_SAM3X8C
+        bool "SAM3x8c (Printrboard G2)"
+        select MACH_SAM3X
     config MACH_SAM4S8C
         bool "SAM4s8c (Duet Maestro)"
         select MACH_SAM4S
@@ -42,6 +45,7 @@ config MACH_SAM4E
 config MCU
     string
     default "sam3x8e" if MACH_SAM3X8E
+    default "sam3x8c" if MACH_SAM3X8C
     default "sam4s8c" if MACH_SAM4S8C
     default "sam4e8e" if MACH_SAM4E8E
 
diff --git a/src/atsam/Makefile b/src/atsam/Makefile
index 76f7d86f..894b8198 100644
--- a/src/atsam/Makefile
+++ b/src/atsam/Makefile
@@ -15,6 +15,7 @@ CFLAGS-$(CONFIG_MACH_SAM3X) += -Ilib/sam3x/include
 CFLAGS-$(CONFIG_MACH_SAM4S) += -Ilib/sam4s/include
 CFLAGS-$(CONFIG_MACH_SAM4E) += -Ilib/sam4e/include
 CFLAGS-$(CONFIG_MACH_SAM3X8E) += -D__SAM3X8E__
+CFLAGS-$(CONFIG_MACH_SAM3X8C) += -D__SAM3X8C__
 CFLAGS-$(CONFIG_MACH_SAM4S8C) += -D__SAM4S8C__
 CFLAGS-$(CONFIG_MACH_SAM4E8E) += -D__SAM4E8E__
 CFLAGS += -mthumb $(CFLAGS-y) -Ilib/cmsis-core
diff --git a/src/atsam/gpio.c b/src/atsam/gpio.c
index 7de11ab6..5308e546 100644
--- a/src/atsam/gpio.c
+++ b/src/atsam/gpio.c
@@ -14,6 +14,8 @@
 static Pio * const digital_regs[] = {
 #if CONFIG_MACH_SAM3X8E
     PIOA, PIOB, PIOC, PIOD
+#elif CONFIG_MACH_SAM3X8C
+    PIOA, PIOB
 #elif CONFIG_MACH_SAM4S8C
     PIOA, PIOB, PIOC
 #elif CONFIG_MACH_SAM4E8E