diff --git a/firmware/atmega/Makefile b/firmware/atmega/Makefile
index 7f396a5..c35ed6f 100644
--- a/firmware/atmega/Makefile
+++ b/firmware/atmega/Makefile
@@ -13,7 +13,7 @@ O_FLAG = -Os
 BUILD_DIR = build
 OBJ_DIR = $(BUILD_DIR)/obj
 
-SRCS_C = source/adc.c source/moisture.c source/main.c source/pump.c
+SRCS_C = source/adc.c source/moisture.c source/main.c source/pump.c source/eeprom.c
 OBJS = $(addprefix $(OBJ_DIR)/, $(notdir $(SRCS_C:.c=.o)))
 
 CFLAGS = -Wall $(O_FLAG) -DF_CPU=$(F_CPU) -mmcu=$(MCU) -Iinclude
diff --git a/firmware/atmega/include/config.h b/firmware/atmega/include/config.h
index 2e11bcc..5d399de 100644
--- a/firmware/atmega/include/config.h
+++ b/firmware/atmega/include/config.h
@@ -1,23 +1,59 @@
 #ifndef CONFIG_H
 #define CONFIG_H
 
+#include <sys/types.h>
+#include <stdint.h>
+#include "eeprom.h"
+
 #define MOISTURE_SENSOR_A0 PC0
-#define MOISTURE_SENSOR_A1 PC1
-#define MOISTURE_SENSOR_A2 PC2
-#define MOISTURE_SENSOR_A3 PC3
-#define MOISTURE_SENSOR_A4 PC4
-#define MOISTURE_SENSOR_A5 PC5
+//#define MOISTURE_SENSOR_A1 PC1
+//#define MOISTURE_SENSOR_A2 PC2
+//#define MOISTURE_SENSOR_A3 PC3
+//#define MOISTURE_SENSOR_A4 PC4
+//#define MOISTURE_SENSOR_A5 PC5
 //#define MOISTURE_SENSOR_A6 PC6
 //#define MOISTURE_SENSOR_A7 PC7
 
-#define PUMP_D3 PD3
-#define PUMP_D4 PD4
-#define PUMP_D5 PD5
+//#define PUMP_D3 PD3
+//#define PUMP_D4 PD4
+//#define PUMP_D5 PD5
 //#define PUMP_D6 PD6
-//#define PUMP_D7 PD7
+#define PUMP_D7 PD7
 
-// TODO: write these to eeprom
-#define SENSOR_READINGS 5
-//#define VASE_NUM 0
+inline void init() {
+    #define DICT_SIZE 7
+
+    #define TWI_SDA         0x20
+    #define TWI_SCL         0x21
+    #define TWI_ADDR        0x22
+    #define SENSOR_READINGS 0x23
+    #define VASE_NUM        0x24
+    #define MOISTURE_MIN    0x25
+    #define MOISTURE_MAX    0x26
+
+    uint8_t keys[DICT_SIZE] = {
+        TWI_SDA,
+        TWI_SCL,
+        TWI_ADDR,
+        SENSOR_READINGS,
+        VASE_NUM,
+        MOISTURE_MIN,
+        MOISTURE_MAX
+    };
+
+    uint16_t values[DICT_SIZE] = {
+        2,
+        3,
+        0x20,
+        5,
+        0,
+        400,
+        200
+    };
+
+    for (int i = 0; i < DICT_SIZE; i++) {
+        if (eepromRead(keys[i]) != 0xFF) eepromWrite(keys[i], values[i]);
+    }
+}
 
 #endif