diff --git a/src/board/arduino/mega2560/board.mk b/src/board/arduino/mega2560/board.mk
index b846db3..75a2091 100644
--- a/src/board/arduino/mega2560/board.mk
+++ b/src/board/arduino/mega2560/board.mk
@@ -1,9 +1,11 @@
 EC=atmega2560
 
 PORT=$(wildcard /dev/ttyACM*)
+CONSOLE_BAUD=1000000
+CFLAGS+=-D__CONSOLE_BAUD__=$(CONSOLE_BAUD)
 
 console:
-	sudo tio -b 9600 $(PORT)
+	sudo tio -b $(CONSOLE_BAUD) $(PORT)
 
 flash: $(BUILD)/ec.ihx
 	sudo avrdude -v -v -p $(EC) -c wiring -P $(PORT) -b 115200 -D -U flash:w:$<:i
diff --git a/src/board/arduino/mega2560/main.c b/src/board/arduino/mega2560/main.c
index fa6f7c4..feb52f2 100644
--- a/src/board/arduino/mega2560/main.c
+++ b/src/board/arduino/mega2560/main.c
@@ -4,7 +4,7 @@
 #include <arch/uart.h>
 
 void init(void) {
-    uart_stdio_init(0, 9600);
+    uart_stdio_init(0, __CONSOLE_BAUD__);
 }
 
 struct Gpio LED = GPIO(B, 7);
diff --git a/src/board/arduino/micro/board.mk b/src/board/arduino/micro/board.mk
index bf8c208..1add97b 100644
--- a/src/board/arduino/micro/board.mk
+++ b/src/board/arduino/micro/board.mk
@@ -1,9 +1,11 @@
 EC=atmega32u4
 
 PORT=$(wildcard /dev/ttyACM*)
+CONSOLE_BAUD=1000000
+CFLAGS+=-D__CONSOLE_BAUD__=$(CONSOLE_BAUD)
 
 console:
-	sudo tio -b 9600 $(PORT)
+	sudo tio -b $(CONSOLE_BAUD) $(PORT)
 
 flash: $(BUILD)/ec.ihx
 	sudo avrdude -v -v -p $(EC) -c avr109 -P $(PORT) -b 115200 -D -U flash:w:$<:i
diff --git a/src/board/arduino/micro/main.c b/src/board/arduino/micro/main.c
index 8b47ffa..4cb9490 100644
--- a/src/board/arduino/micro/main.c
+++ b/src/board/arduino/micro/main.c
@@ -4,7 +4,7 @@
 #include <arch/uart.h>
 
 void init(void) {
-    uart_stdio_init(0, 9600);
+    uart_stdio_init(0, __CONSOLE_BAUD__);
 }
 
 struct Gpio LED = GPIO(C, 7);
diff --git a/src/board/arduino/uno/board.mk b/src/board/arduino/uno/board.mk
index 2916066..95c04e3 100644
--- a/src/board/arduino/uno/board.mk
+++ b/src/board/arduino/uno/board.mk
@@ -1,9 +1,11 @@
 EC=atmega328p
 
 PORT=$(wildcard /dev/ttyACM*)
+CONSOLE_BAUD=1000000
+CFLAGS+=-D__CONSOLE_BAUD__=$(CONSOLE_BAUD)
 
 console:
-	sudo tio -b 9600 $(PORT)
+	sudo tio -b $(CONSOLE_BAUD) $(PORT)
 
 flash: $(BUILD)/ec.ihx
 	sudo avrdude -v -v -p $(EC) -c arduino -P $(PORT) -b 115200 -D -U flash:w:$<:i
diff --git a/src/board/arduino/uno/main.c b/src/board/arduino/uno/main.c
index 434b81d..c5c2533 100644
--- a/src/board/arduino/uno/main.c
+++ b/src/board/arduino/uno/main.c
@@ -4,7 +4,7 @@
 #include <arch/uart.h>
 
 void init(void) {
-    uart_stdio_init(0, 9600);
+    uart_stdio_init(0, __CONSOLE_BAUD__);
 }
 
 struct Gpio LED = GPIO(B, 5);
diff --git a/src/common/common.mk b/src/common/common.mk
new file mode 100644
index 0000000..e69de29
diff --git a/src/common/include/common/macro.h b/src/common/include/common/macro.h
new file mode 100644
index 0000000..99f2f84
--- /dev/null
+++ b/src/common/include/common/macro.h
@@ -0,0 +1,7 @@
+#ifndef _COMMON_MACRO_H
+#define _COMMON_MACRO_H
+
+#define xstr(s) str(s)
+#define str(s) #s
+
+#endif // _COMMON_MACRO_H