diff --git a/module00/ex00/Makefile b/module00/ex00/Makefile
index 36889ed..b7893fd 100644
--- a/module00/ex00/Makefile
+++ b/module00/ex00/Makefile
@@ -6,7 +6,6 @@ CC = avr-gcc
 
 all: hex flash
 
-# ls /dev/tty* : /dev/ttyUSB0
 hex: $(TARGET).hex
 
 # avr-gcc : compiler for AVR microcontrollers, https://gcc.gnu.org/wiki/avr-gcc#Using_avr-gcc, https://gcc.gnu.org/onlinedocs/gcc/AVR-Options.html
diff --git a/module00/ex01/Makefile b/module00/ex01/Makefile
new file mode 100644
index 0000000..2a483b1
--- /dev/null
+++ b/module00/ex01/Makefile
@@ -0,0 +1,40 @@
+# frequency of the CPU (in Hz)
+F_CPU = 16000000UL
+TARGET = main
+CC = avr-gcc
+
+AVRGCC_MCU_TYPE = atmega328p
+AVRDUDE_MCU_TYPE = m328p
+BAUD_RATE = 115200
+SERIAL_PORT = /dev/ttyUSB0
+PROGRAMMER_ID = arduino
+
+
+all: hex flash
+
+hex: $(TARGET).hex
+
+# https://gcc.gnu.org/onlinedocs/gcc/AVR-Options.html
+$(TARGET).bin: $(TARGET).c
+	$(CC) -mmcu=$(AVRGCC_MCU_TYPE) -D F_CPU=$(F_CPU) $(TARGET).c -o $(TARGET).bin
+
+
+# https://linux.die.net/man/1/avr-objcopy
+$(TARGET).hex: $(TARGET).bin
+	avr-objcopy -O ihex $(TARGET).bin $(TARGET).hex
+
+
+# AVR Downloader/UploaDEr https://avrdudes.github.io/avrdude (v6.3 https://download-mirror.savannah.gnu.org/releases/avrdude/avrdude-doc-6.3.pdf)
+flash:
+	avrdude -p $(AVRDUDE_MCU_TYPE) -c $(PROGRAMMER_ID) -b $(BAUD_RATE) -P $(SERIAL_PORT) -U flash:w:$(TARGET).hex
+
+
+dump:
+	avrdude -p m328p -c arduino -b 115200 -P /dev/ttyUSB0 -U flash:r:dump_atmega328p.hex
+
+
+clean:
+	rm -f main.hex main.bin
+
+
+.PHONY : all clean hex flash dump
\ No newline at end of file
diff --git a/module00/ex01/main.c b/module00/ex01/main.c
new file mode 100644
index 0000000..0eefc1c
--- /dev/null
+++ b/module00/ex01/main.c
@@ -0,0 +1,3 @@
+int main()
+{
+}
\ No newline at end of file