diff --git a/Makefile.base b/Makefile.base
new file mode 100644
index 0000000..c43e477
--- /dev/null
+++ b/Makefile.base
@@ -0,0 +1,452 @@
+### MARKHAM'S NOTES:
+
+# This Makefile includes the Arduino core sources. (Set ARDDIR here:)
+ARDDIR 				= /home/mrh/Downloads/arduino-1.8.8-linux64/arduino-1.8.8/
+#ARDDIR 				= /home/mrh/Downloads/arduino-1.8.8-linux64/arduino-1.8.8/hardware/arduino/avr 
+
+# You should build a tiny Makefile for each of your projects and just declare a few
+# things in it, then include this Makefile in it. Your Makefile should be in the same
+# directory as your TARGET file (see below).
+#
+# Exemplia gratia:
+#
+# TARGET = foo 												# the name of your main file, with no extension
+# SRC = foo.c bar.c  									# the C source files
+# PSRC = baz.cpp qux.cpp 							# the C++ source files
+# ARDLIBS = SoftwareSerial						# extra Arduino libraries
+# include /d/dev/avr/Makefile.base 		# this line includes the Makefile.base
+
+# A number of necessary variables are set to defaults below, but you can override them
+# in your own Makefile:
+# F_CPU (default is 16000000)
+# MCU (default is atmega328p)
+# AVRDUDE_PORT (default is com8)
+#
+# To include Arduino libraries, define
+# ARDLIBS = SoftwareSerial Servo...
+#
+# This Makefile requires that you have no spaces in your file paths, including
+# your Arduino directory (where you core, variants, and libs are stored). If
+# necessary, copy your Arduino source files to another directory and define that
+# directory in the variables for this file.
+
+# This Makefile is modified from
+# WinAVR Sample makefile written by Eric B. Weddington, Jörg Wunsch, et al.
+# Modified (bringing often-changed options to the top) by Elliot Williams
+
+# The following tasks are defined in this Makefile:
+# make all = Make software and program
+# make clean = Clean out built project files.
+# make program = Download the hex file to the device, using avrdude.
+
+# Supply the following variables:
+# SRC = source files ending with .c
+# PSRC = source files ending with .cpp
+
+### These macros pertain to compiler flags
+# Target file name (without extension).
+ifndef TARGET
+TARGET = main
+endif
+# List any extra directories to look for include files here.
+ifndef EXTRAINCDIRS
+EXTRAINCDIRS = 
+endif
+ifndef LDFLAGS
+LDFLAGS = 
+endif
+ifndef CFLAGS
+CFLAGS = 
+endif
+
+
+### These macros pertain to hardware settings
+ifndef MCU
+MCU = atmega328p
+endif
+ifndef AVRDUDE_PROGRAMMER
+AVRDUDE_PROGRAMMER = stk500v1
+endif
+ifndef AVRDUDE_PORT
+AVRDUDE_PORT = com8
+endif
+ifndef BAUDRATE
+BAUDRATE = 19200
+endif
+ifndef F_CPU
+F_CPU = 16000000
+endif
+CFLAGS += -D F_CPU=$(F_CPU) -D ARDUINO
+
+# hardware/arduino/avr/libraries/SPI/src/SPI.cpp:
+
+ARDLIBS2 = SPI
+### These macros pertain to supporting Arduino libs
+ifndef NO_ARDUINO
+	LDFLAGS += -lm # -lm = math library
+	ARDLIBDIR 		= $(ARDDIR)/libraries
+	ARDLIBDIR2 		= $(ARDDIR)/hardware/arduino/avr/libraries
+	ARDCOREDIR 		= $(ARDDIR)/hardware/arduino/avr/cores/arduino
+	ifeq ($(MCU),atmega328p)
+	EXTRAINCDIRS += $(ARDDIR)/hardware/arduino/variants/standard
+	endif
+	ifeq ($(MCU),atmega2560)
+	EXTRAINCDIRS += $(ARDDIR)/hardware/arduino/variants/mega
+	endif
+	ifeq ($(MCU),attiny85)
+	EXTRAINCDIRS += $(ARDDIR)/hardware/attiny/variants/tiny8
+	endif
+	# add Arduino sources and include directories to PSRC and EXTRAINCDIRS
+	PSRC += $(wildcard $(ARDCOREDIR)/*.cpp)
+	SRC += $(wildcard $(ARDCOREDIR)/*.c)
+	EXTRAINCDIRS += $(ARDCOREDIR)
+	PSRC += $(foreach lib,$(ARDLIBS),$(ARDLIBDIR)/$(lib)/$(lib).cpp)
+	PSRC += $(foreach lib,$(ARDLIBS2),$(ARDLIBDIR2)/$(lib)/src/$(lib).cpp)
+	EXTRAINCDIRS += $(foreach lib,$(ARDLIBS),$(ARDLIBDIR)/$(lib))
+endif
+
+
+############# Don't need to change below here for most purposes  (Elliot)
+
+# Optimization level, can be [0, 1, 2, 3, s]. 0 turns off optimization.
+# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
+OPT = s
+
+# Output format. (can be srec, ihex, binary)
+FORMAT = ihex
+
+
+# List Assembler source files here.
+# Make them always end in a capital .S.  Files ending in a lowercase .s
+# will not be considered source files but generated files (assembler
+# output from the compiler), and will be deleted upon "make clean"!
+# Even though the DOS/Win* filesystem matches both .s and .S the same,
+# it will preserve the spelling of the filenames, and gcc itself does
+# care about how the name is spelled on its command-line.
+ASRC = #$(ARDDIR)/hardware/arduino/avr/cores/arduino/wiring_pulse.S
+
+# Optional compiler flags.
+#  -g:        generate debugging information (for GDB, or for COFF conversion)
+#  -O*:       optimization level
+#  -f...:     tuning, see gcc manual and avr-libc documentation
+#  -Wall...:  warning level
+#  -Wa,...:   tell GCC to pass this to the assembler.
+#    -ahlms:  create assembler listing
+CFLAGS += -g -O$(OPT) \
+-funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums \
+-Wall -DBAUD=9600UL \
+$(patsubst %,-I%,$(EXTRAINCDIRS))
+
+
+# Optional assembler flags.
+#  -Wa,...:   tell GCC to pass this to the assembler.
+#  -ahlms:    create listing
+#  -gstabs:   have the assembler create line number information; note that
+#             for use in COFF files, additional information about filenames
+#             and function names needs to be present in the assembler source
+#             files -- see avr-libc docs [FIXME: not yet described there]
+ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs 
+
+
+
+# Optional linker flags.
+#  -Wl,...:   tell GCC to pass this to linker.
+#  -Map:      create map file
+#  --cref:    add cross reference to  map file
+LDFLAGS += -Wl,-Map=$(TARGET).map,--cref
+
+
+
+# Additional libraries
+
+# Minimalistic printf version
+#LDFLAGS += -Wl,-u,vfprintf -lprintf_min
+
+# Floating point printf version (requires -lm below)
+#LDFLAGS += -Wl,-u,vfprintf -lprintf_flt
+
+
+# Programming support using avrdude. Settings and variables.
+
+
+AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
+#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
+
+AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
+
+# Uncomment the following if you want avrdude's erase cycle counter.
+# Note that this counter needs to be initialized first using -Yn,
+# see avrdude manual.
+#AVRDUDE_ERASE += -y
+
+# Uncomment the following if you do /not/ wish a verification to be
+# performed after programming the device.
+#AVRDUDE_FLAGS += -V
+
+# Increase verbosity level.  Please use this when submitting bug
+# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude> 
+# to submit bug reports.
+#AVRDUDE_FLAGS += -v -v
+
+#Run while cable attached or don't
+# AVRDUDE_FLAGS += -E reset #keep chip disabled while cable attached
+#AVRDUDE_FLAGS += -E noreset
+
+#AVRDUDE_WRITE_FLASH = -U lfuse:w:0x04:m #run with 8 Mhz clock
+
+#AVRDUDE_WRITE_FLASH = -U lfuse:w:0x21:m #run with 1 Mhz clock #default clock mode
+
+#AVRDUDE_WRITE_FLASH = -U lfuse:w:0x01:m #run with 1 Mhz clock no start up time
+
+# ---------------------------------------------------------------------------
+
+# Define directories, if needed.
+DIRAVR = c:/winavr
+DIRAVRBIN = $(DIRAVR)/bin
+DIRAVRUTILS = $(DIRAVR)/utils/bin
+DIRINC = .
+DIRLIB = $(DIRAVR)/avr/lib
+
+
+# Define programs and commands.
+SHELL = sh
+
+CC = avr-gcc
+
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+SIZE = avr-size
+
+
+# Programming support using avrdude.
+AVRDUDE = avrdude
+
+
+REMOVE = rm -f
+COPY = cp
+
+HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
+ELFSIZE = $(SIZE) -A $(TARGET).elf
+
+
+
+# Define Messages
+# English
+MSG_ERRORS_NONE = Errors: none
+MSG_BEGIN = -------- begin --------
+MSG_END = --------  end  --------
+MSG_SIZE_BEFORE = Size before: 
+MSG_SIZE_AFTER = Size after:
+MSG_COFF = Converting to AVR COFF:
+MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
+MSG_FLASH = Creating load file for Flash:
+MSG_EEPROM = Creating load file for EEPROM:
+MSG_EXTENDED_LISTING = Creating Extended Listing:
+MSG_SYMBOL_TABLE = Creating Symbol Table:
+MSG_LINKING = Linking:
+MSG_COMPILING = Compiling:
+MSG_ASSEMBLING = Assembling:
+MSG_CLEANING = Cleaning project:
+
+
+
+
+# Define all object files.
+OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) $(PSRC:.cpp=.o)
+
+# Define all listing files.
+LST = $(ASRC:.S=.lst) $(SRC:.c=.lst) $(PSRC:.cpp=.lst)
+
+# Combine all necessary flags and optional flags.
+# Add target processor to flags.
+ALL_CFLAGS 		= -mmcu=$(MCU) -I. $(CFLAGS) -Wa,-adhlns=$(<:.c=.lst)
+ALL_CXXFLAGS 	= -mmcu=$(MCU) -I. $(CFLAGS) -Wa,-adhlns=$(<:.cpp=.lst)
+ALL_ASFLAGS 	= -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
+
+
+# Default target: make program!
+all: begin gccversion sizebefore \
+	$(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).lss $(TARGET).sym \
+	sizeafter finished end
+
+# Eye candy.
+# AVR Studio 3.x does not check make's exit code but relies on
+# the following magic strings to be generated by the compile job.
+begin:
+	@echo
+	@echo $(MSG_BEGIN)
+
+finished:
+	@echo $(MSG_ERRORS_NONE)
+
+end:
+	@echo $(MSG_END)
+	@echo
+
+
+# Display size of file.
+sizebefore:
+	@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi
+
+sizeafter:
+	@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi
+
+
+
+# Display compiler version information.
+gccversion : 
+	@$(CC) --version
+	@echo 
+	@echo $(OBJ)
+
+
+
+
+# Convert ELF to COFF for use in debugging / simulating in
+# AVR Studio or VMLAB.
+COFFCONVERT=$(OBJCOPY) --debugging \
+	--change-section-address .data-0x800000 \
+	--change-section-address .bss-0x800000 \
+	--change-section-address .noinit-0x800000 \
+	--change-section-address .eeprom-0x810000 
+
+
+coff: $(TARGET).elf
+	@echo
+	@echo $(MSG_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-avr $< $(TARGET).cof
+
+
+extcoff: $(TARGET).elf
+	@echo
+	@echo $(MSG_EXTENDED_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof
+
+
+
+
+# Program the device.  
+program: $(TARGET).hex $(TARGET).eep
+	$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) -b $(BAUDRATE) $(AVRDUDE_WRITE_EEPROM) -vvvv
+
+
+
+
+# Create final output files (.hex, .eep) from ELF output file.
+%.hex: %.elf
+	@echo
+	@echo $(MSG_FLASH) $@
+	$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
+
+%.eep: %.elf
+	@echo
+	@echo $(MSG_EEPROM) $@
+	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+	--change-section-lma .eeprom=0 -O $(FORMAT) $< $@
+
+# Create extended listing file from ELF output file.
+%.lss: %.elf
+	@echo
+	@echo $(MSG_EXTENDED_LISTING) $@
+	$(OBJDUMP) -h -S $< > $@
+
+# Create a symbol table from ELF output file.
+%.sym: %.elf
+	@echo
+	@echo $(MSG_SYMBOL_TABLE) $@
+	avr-nm -n $< > $@
+
+
+
+# Link: create ELF output file from object files.
+.SECONDARY: $(TARGET).elf
+.PRECIOUS: $(OBJ)
+%.elf: $(OBJ)
+	@echo
+	@echo $(MSG_LINKING) $@
+	$(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS)
+
+
+# Compile: create object files from C source files.
+%.o: %.c
+	@echo
+	@echo $(MSG_COMPILING) $<
+	$(CC) -c $(ALL_CFLAGS) $< -o $@
+
+
+# Compile: create assembler files from C source files.
+%.s: %.c
+	$(CC) -S $(ALL_CFLAGS) $< -o $@
+
+
+# Compile: create object files from C++ source files
+%.o: %.cpp
+	@echo
+	@echo $(MSG_COMPILING) $<
+	$(CC) -c $(ALL_CXXFLAGS) $< -o $@
+
+# Compile: create assembler files from C source files.
+%.s: %.cpp
+	$(CC) -S $(ALL_CXXFLAGS) $< -o $@
+
+
+# Assemble: create object files from assembler source files.
+%.o: %.S
+	@echo
+	@echo $(MSG_ASSEMBLING) $<
+	$(CC) -c $(ALL_ASFLAGS) $< -o $@
+
+
+# Target: clean project.
+clean: begin clean_list finished end
+
+clean_list :
+	@echo
+	@echo $(MSG_CLEANING)
+	$(REMOVE) $(TARGET).hex
+	$(REMOVE) $(TARGET).eep
+	$(REMOVE) $(TARGET).obj
+	$(REMOVE) $(TARGET).cof
+	$(REMOVE) $(TARGET).elf
+	$(REMOVE) $(TARGET).map
+	$(REMOVE) $(TARGET).obj
+	$(REMOVE) $(TARGET).a90
+	$(REMOVE) $(TARGET).sym
+	$(REMOVE) $(TARGET).lnk
+	$(REMOVE) $(TARGET).lss
+	$(REMOVE) $(TARGET).lst
+	$(REMOVE) $(OBJ)
+	$(REMOVE) $(LST)
+	$(REMOVE) $(SRC:.c=.s)
+	$(REMOVE) $(SRC:.c=.d)
+	$(REMOVE) $(PSRC:.cpp=.s)
+	$(REMOVE) $(PSRC:.cpp=.d)
+	$(REMOVE) *~
+
+
+# Automatically generate C source code dependencies. 
+# (Code originally taken from the GNU make user manual and modified 
+# (See README.txt Credits).)
+#
+# Note that this will work with sh (bash) and sed that is shipped with WinAVR
+# (see the SHELL variable defined above).
+# This may not work with other shells or other seds.
+
+%.d: %.c
+	set -e; $(CC) -MM $(ALL_CFLAGS) $< \
+	| sed 's,\(.*\)\.o[ :]*,\1.o \1.d : ,g' > $@; \
+	[ -s $@ ] || rm -f $@
+
+%.d: %.cpp
+	set -e; $(CC) -MM $(ALL_CFLAGS) $< \
+	| sed 's,\(.*\)\.o[ :]*,\1.o \1.d : ,g' > $@; \
+	[ -s $@ ] || rm -f $@
+
+# Remove the '-' if you want to see the dependency files generated.
+-include $(SRC:.c=.d)
+
+-include $(PSRC:.cpp=.d)
+
+# Listing of phony targets.
+.PHONY : all begin finish end sizebefore sizeafter gccversion coff extcoff \
+	clean clean_list program
diff --git a/Makefile.mk b/Makefile.mk
new file mode 100644
index 0000000..d6aaac3
--- /dev/null
+++ b/Makefile.mk
@@ -0,0 +1,26 @@
+# This is the name of the file that shall be created. (It is also the name of my primary source file, without the file extension.)
+TARGET = main
+
+# create a variable that only pertains to this project
+#MY_OWN_LIBRARY_DIR = /usr/home/MJ/Arduino/libraries/mj_midi
+
+base = /home/mrh/Downloads/arduino-1.8.8-linux64/arduino-1.8.8
+
+# "EXTRAINCDIRS" is a variable used by the base makefile. The base makefile creates a -I compiler flag for every item in the "EXTRAINCDIRS" list.
+EXTRAINCDIRS = \
+	${base}/hardware/arduino/avr/libraries/SPI/src \
+	${base}/hardware/arduino/avr/cores/arduino    \
+	${base}/hardware/arduino/avr/variants/standard \
+	${base}/libraries/RF24                         \
+
+# specify *.c source files pertaining to my project
+SRC = 
+
+# specify *.cpp source files pertaining to my project
+PSRC = main.cpp 
+
+# specify additional (non-core) Arduino libraries to include
+ARDLIBS = RF24 
+
+# include my base makefile
+include ./Makefile.base
diff --git a/main.c b/main.cpp
similarity index 85%
rename from main.c
rename to main.cpp
index 1a9c2da..717200e 100644
--- a/main.c
+++ b/main.cpp
@@ -3,6 +3,13 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <util/setbaud.h>
+#include <Arduino.h>
+
+#include <SPI.h>
+#include <nRF24L01.h>
+#include <RF24.h>
+#define CE_PIN 7
+#define CSN_PIN 8
 
 #define LED PORTD2
 #define PULL PORTD3
@@ -38,9 +45,12 @@ void uart_putstr(char *data) {
 }
 
 
+const char thisSlaveAddress[5] = {'R','x','A','A','A'};
 
 int main(void) {
-    
+    digitalWrite(10, 10);
+
+    RF24 value(CE_PIN, CSN_PIN);
     uart_init();
 
 	DDRC &= ~(1<<0); // Input
diff --git a/main2.c b/main2.c
deleted file mode 100644
index 1479080..0000000
--- a/main2.c
+++ /dev/null
@@ -1,118 +0,0 @@
-#include <avr/io.h>
-#include <stdint.h>
-#include <util/delay.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-#include <util/setbaud.h>
-
-#define LED             PORTB5
-#define RELAY           PORTB0 
-
-uint16_t adc_read(uint8_t adcx);
-void uart_init();
-void uart_putchar(char c);
-void uart_putstr(char *data);
-
-int main(void) {
-
-    uart_init();
-	
-    /* Enable the ADC */
-	ADCSRA |= _BV(ADEN);
-
-	/* Set the LED pin as an output. */
-    DDRB |= _BV(LED);
-    DDRB |= _BV(RELAY);
-
-    const int ring_buf_size = 20;
-    uint16_t ring_buf[ring_buf_size];
-    int index = 0;
-
-    float average = 10;
-    const int threshold = 50;
-
-    for (;;_delay_ms(200)) {
-
-        uint16_t pin_value = adc_read(0);
-
-        if (index > ring_buf_size)
-            index = 0;
-        ring_buf[index] = pin_value;
-        index++;
-
-        average = 0;
-        for (int i = 0; i < ring_buf_size; i++){
-            average += ring_buf[i];
-        }
-        average /= ring_buf_size;
-
-        // Print the value to serial
-        char buff[10];
-        itoa(pin_value, buff, 10);
-        uart_putstr(buff);
-        uart_putstr("\n");
-
-        itoa(average, buff, 10);
-        uart_putstr(buff);
-        uart_putstr("\n");
-
-//        PORTD |= (1 << WIRE);
-//        PORTD &= (0 << WIRE);
-
-        if (abs(pin_value - average) > threshold)
-			PORTB |= _BV(LED);
-		else
-			PORTB &= ~_BV(LED);
-        
-    }
-}
-
-uint16_t adc_read(uint8_t adcx) {
-	/* adcx is the analog pin we want to use.  ADMUX's first few bits are
-	 * the binary representations of the numbers of the pins so we can
-	 * just 'OR' the pin's number with ADMUX to select that pin.
-	 * We first zero the four bits by setting ADMUX equal to its higher
-	 * four bits. */
-    ADMUX = _BV(REFS0) | adcx;
-	/* This starts the conversion. */
-	ADCSRA |= _BV(ADSC);
-
-	/* This is an idle loop that just wait around until the conversion
-	 * is finished.  It constantly checks ADCSRA's ADSC bit, which we just
-	 * set above, to see if it is still set.  This bit is automatically
-	 * reset (zeroed) when the conversion is ready so if we do this in
-	 * a loop the loop will just go until the conversion is ready. */
-	while ( (ADCSRA & _BV(ADSC)) );
-
-	/* Finally, we return the converted value to the calling function. */
-	return ADC;
-}
-
-void uart_init() {
-    // Upper and lower bytes of the calculated prescaler value for baud.
-    UBRR0H = UBRRH_VALUE;
-    UBRR0L = UBRRL_VALUE;
-
-    // Configure data frame size to 8-bits.
-    UCSR0C = _BV(UCSZ01) | _BV(UCSZ00);
-
-    // Configure to enable transmitter.
-    UCSR0B = _BV(TXEN0);
-}
-
-void uart_putchar(char c) {
-    // Wait until the register to write to is free.
-    loop_until_bit_is_set(UCSR0A, UDRE0);
-
-    // Write the byte to the register.
-    UDR0 = c;
-}
-
-void uart_putstr(char *data) {
-    // Loop until end of string writing char by char.
-    while(*data){
-      uart_putchar(*data++);
-    }
-}