diff --git a/config.yaml b/config.yaml
index a128aa0..137ce25 100644
--- a/config.yaml
+++ b/config.yaml
@@ -3,7 +3,8 @@ ledd:
   host: "127.0.0.1"
   port: 5640
 pca9685:
-  device: "dev/i2c-2"
-  address: 0x40
+  device: "/dev/i2c-1"
+  address: 0x44
   minpulse: 0
   maxpulse: 4095
+  gamma: 2.2
diff --git a/main.go b/main.go
index bc4aec3..a61a996 100644
--- a/main.go
+++ b/main.go
@@ -13,6 +13,7 @@ import (
 	"gen/ledd"
 	"github.com/golang/protobuf/proto"
 	"fmt"
+	"math"
 )
 
 // CONSTANTS
@@ -34,6 +35,7 @@ type config struct {
 		Address  int
 		MinPulse uint16
 		MaxPulse uint16
+		Gamma float64
 	}
 }
 
@@ -44,9 +46,10 @@ type LedDaemon struct {
 }
 
 var log = logging.MustGetLogger("LedD")
-var ledDaemon = &LedDaemon{}
-var pca9685 = &PCA9685{}
-var pwmMap = map[int32]*Pwm{}
+var ledDaemon* LedDaemon
+var pca9685* PCA9685
+var pwmMap map[int32]*Pwm
+var readConfig config
 
 func check(e error) {
 	if e != nil {
@@ -94,6 +97,8 @@ func (daemon *LedDaemon) receive() {
 							continue
 						}
 
+						v = int32(math.Min(math.Round(math.Pow(float64(v), readConfig.Pca9685.Gamma)), RESOLUTION))
+
 						if pwm, ok := pwmMap[c]; ok {
 							pwm.setPercentage(float32(v) / RESOLUTION * 100)
 						} else {
@@ -131,24 +136,23 @@ func main() {
 	signal.Notify(killSignals, syscall.SIGINT, syscall.SIGTERM)
 
 	log.Info("LedD PCA9685 backend", VERSION)
-	config := config{}
 
 	content, err := ioutil.ReadFile("config.yaml")
 	check(err)
 
-	err = yaml.Unmarshal(content, &config)
+	err = yaml.Unmarshal(content, &readConfig)
 	check(err)
 
-	i2cDevice, err := i2c.Open(&i2c.Devfs{Dev: config.Pca9685.Device}, config.Pca9685.Address)
+	i2cDevice, err := i2c.Open(&i2c.Devfs{Dev: readConfig.Pca9685.Device}, readConfig.Pca9685.Address)
 	check(err)
 	defer i2cDevice.Close()
 
-	pca9685 = createPCA9685(i2cDevice, config.Name, config.Pca9685.MinPulse, config.Pca9685.MaxPulse, logging.MustGetLogger("PCA9685"))
+	pca9685 = createPCA9685(i2cDevice, readConfig.Name, readConfig.Pca9685.MinPulse, readConfig.Pca9685.MaxPulse, logging.MustGetLogger("PCA9685"))
 	pca9685.Init()
 
 	pwmMap = make(map[int32]*Pwm, 0)
 
-	conn, err := net.Dial("tcp4", fmt.Sprintf("%s:%d", config.Ledd.Host, config.Ledd.Port))
+	conn, err := net.Dial("tcp4", fmt.Sprintf("%s:%d", readConfig.Ledd.Host, readConfig.Ledd.Port))
 	check(err)
 
 	ledDaemon = &LedDaemon{
@@ -163,7 +167,7 @@ func main() {
 	wrapperMsg := &ledd.BackendWrapperMessage{
 		Msg: &ledd.BackendWrapperMessage_MBackend{
 			MBackend: &ledd.Backend{
-				Name:       config.Name,
+				Name:       readConfig.Name,
 				Channel:    CHANNEL,
 				Type:       "PCA9685",
 				Resolution: RESOLUTION,