diff --git a/eink/Makefile b/eink/Makefile
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+# Makefile for AVR C++ projects
+# From: https://gist.github.com/rynr/72734da4b8c7b962aa65
+
+# ----- Update the settings of your project here -----
+
+# Hardware
+MCU     = atmega328p
+AVRDUDE_PARAMS = -c atmelice_isp
+FUSES = -U lfuse:w:0xff:m -U hfuse:w:0xd7:m -U efuse:w:0xfd:m
+
+# Parameters
+PROJECT = $(lastword $(subst /, ,$(CURDIR)))
+INCS =
+LIBS =
+DEFS = -DNDEBUG
+
+# ----- These configurations are quite likely not to be changed -----
+
+# Binaries
+GCC     = avr-gcc
+G++     = avr-g++
+RM      = rm -f
+AVRDUDE = avrdude
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+SIZE    = avr-size
+
+# Files
+EXT_C   = c
+EXT_C++ = cpp
+EXT_ASM = asm
+
+# ----- No changes should be necessary below this line -----
+
+OBJECTS = \
+	$(patsubst %.$(EXT_C),%.o,$(wildcard *.$(EXT_C)) $(wildcard **/*.$(EXT_C))) \
+	$(patsubst %.$(EXT_C++),%.o,$(wildcard *.$(EXT_C++)) $(wildcard **/*.$(EXT_C++))) \
+	$(patsubst %.$(EXT_ASM),%.o,$(wildcard *.$(EXT_ASM)) $(wildcard **/*.$(EXT_ASM)))
+
+# Linker and compiler flags
+LDFLAGS = $(LIBS)
+LDFLAGS += -Wl,-Map=$(PROJECT).map
+LDFLAGS += -Wl,--gc-sections -mrelax
+
+CFLAGS = $(INCS)
+CFLAGS += $(DEFS)
+CFLAGS += -Os
+CFLAGS += -std=c17
+CFLAGS += -funsigned-char -funsigned-bitfields -fshort-enums -ffunction-sections -fdata-sections -fno-threadsafe-statics -mrelax
+CFLAGS += -Wall -Wextra -pedantic -Wstrict-prototypes
+CFLAGS += -mmcu=$(MCU)
+
+C++FLAGS = $(INCS)
+C++FLAGS += $(DEFS)
+C++FLAGS += -Os
+C++FLAGS += -std=c++20
+C++FLAGS += -funsigned-char -funsigned-bitfields -fshort-enums -ffunction-sections -fdata-sections -fno-threadsafe-statics -mrelax
+C++FLAGS += -Wall -Wextra -pedantic -Wno-array-bounds
+C++FLAGS += -mmcu=$(MCU)
+
+ASMFLAGS = $(INCS)
+ASMFLAGS += $(DEFS)
+ASMFLAGS += -Os
+ASMFLAGS += -funsigned-char -funsigned-bitfields -fshort-enums -ffunction-sections -fdata-sections -fno-threadsafe-statics -mrelax
+ASMFLAGS += -Wall -Wextra -pedantic -Wstrict-prototypes
+ASMFLAGS += -x assembler-with-cpp
+ASMFLAGS += -mmcu=$(MCU)
+
+all: $(PROJECT).elf $(OBJECTS) $(PROJECT).hex $(PROJECT).srec $(PROJECT).eeprom $(PROJECT).lss
+	$(SIZE) -C --mcu=$(MCU) $(PROJECT).elf
+
+%.elf: $(OBJECTS)
+	$(GCC) $(CFLAGS) $(OBJECTS) -o $@ $(LDFLAGS)
+
+%.o: %.$(EXT_C)
+	$(GCC) $(CFLAGS) -c $< -o $@
+
+%.o: %.$(EXT_C++)
+	$(G++) $(C++FLAGS) -c $< -o $@
+
+%.o: %.$(EXT_ASM)
+	$(G++) $(ASMFLAGS) -c $< -o $@
+
+%.hex: %.elf
+	$(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.srec: %.elf
+	$(OBJCOPY) -j .text -j .data -O srec $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@
+
+%.lss: %.elf
+	$(OBJDUMP) -h -S $< > $@
+
+clean:
+	$(RM) $(PROJECT).elf $(OBJECTS) $(PROJECT).hex $(PROJECT).srec $(PROJECT).eeprom $(PROJECT).lss $(PROJECT).map
+
+flash: $(PROJECT).hex
+	sudo $(AVRDUDE) $(AVRDUDE_PARAMS) -p $(MCU) -U flash:w:$<:i
+
+flash-eeprom: $(PROJECT).eeprom
+	sudo $(AVRDUDE) $(AVRDUDE_PARAMS) -p $(MCU) -U eeprom:w:$<:i
+
+flash-fuses:
+	sudo $(AVRDUDE) $(AVRDUDE_PARAMS) -p $(MCU) $(FUSES)
+
+flash-erase:
+	sudo $(AVRDUDE) $(AVRDUDE_PARAMS) -p $(MCU) -e
+
+help:
+	@echo "usage:"
+	@echo "  make <target>"
+	@echo ""
+	@echo "targets:"
+	@echo "  all           Builds everything"
+	@echo "  clean         Remove any non-source files"
+	@echo "  flash         Flashes firmware"
+	@echo "  flash-eeprom  Flashes eeprom"
+	@echo "  flash-fuses   Flashes fuses"
+	@echo "  flash-erase   Erases entire chip including eeprom"
+	@echo "  help          Shows this help"
+	@echo "  config        Shows the current configuration"
+	@echo "  show-mcu      Show list of all possible MCUs"
+
+config:
+	@echo "configuration:"
+	@echo ""
+	@echo "Binaries for:"
+	@echo "  C compiler:   $(GCC)"
+	@echo "  C++ compiler: $(G++)"
+	@echo "  remove files  $(RM)"
+	@echo "  Programmer:   $(AVRDUDE)"
+	@echo "  Obj copier:   $(OBJCOPY)"
+	@echo "  Obj dumper:   $(OBJDUMP)"
+	@echo "  Size calc:    $(SIZE)"
+	@echo ""
+	@echo "Hardware settings:"
+	@echo "  MCU:            $(MCU)"
+	@echo "  Avrdude params: $(AVRDUDE_PARAMS)"
+	@echo "  Fuses:          $(FUSES)"
+	@echo ""
+	@echo "Project settings:"
+	@echo "  Project name:       $(PROJECT)"
+	@echo "  Include dirs:       $(INCS)"
+	@echo "  Library dirs:       $(LIBS)"
+	@echo "  Preprocessor defs:  $(DEFS)"
+	@echo "  C compiler flags:   $(CFLAGS)"
+	@echo "  C++ compiler flags: $(C++FLAGS)"
+	@echo "  ASM compiler flags: $(ASMFLAGS)"
+	@echo "  Linker flags:       $(LDFLAGS)"
+	@echo ""
+	@echo "Defaults:"
+	@echo "  C-files:   *.$(EXT_C)"
+	@echo "  C++-files: *.$(EXT_C++)"
+	@echo "  ASM-files: *.$(EXT_ASM)"
+
+show-mcu:
+	$(G++) --target-help