improve brightness curve

controllerHomie/controllerHomie.ino

@@ -66,6 +66,7 @@ float enable_fadevalue_change_per_loop=0.01; //fixed value. For manual calculato
 float set_brightness=2; //0 to 1
 #define BRIGHTNESS_MIN 0.0
 #define BRIGHTNESS_MAX 2.0 //if temperature is in between both strips brightness of 2 means both are at full power. otherwise brightness will be clipped
+#define BRIGHTNESSCURVE 1.4
 float brightness=set_brightness;
 float brightness_change_per_loop=0; //will be calculated by Handler
 
@@ -324,8 +325,8 @@ void loopHandler() {
       uint16_t pwmCW;
       uint16_t pwmWW;
       float temp=mapFloat(temperature, TEMPERATURE_MIN, TEMPERATURE_MAX, 0.0,1.0); //0=warmwhite, 1=coldwhite
-      pwmCW=pow((brightness*enable_fadevalue)*temp/2.0, 2)  *2.0 *PWM_MAX;  //calculate brightness for led stripe, scale to 0-1, ^2, rescale to 0-2, scale for pwm
-      pwmWW=pow((brightness*enable_fadevalue)*(1-temp)/2.0, 2)  *2.0 *PWM_MAX;
+      pwmCW=pow((brightness*enable_fadevalue)/2.0, BRIGHTNESSCURVE)  *2.0 *temp *PWM_MAX;  //calculate brightness for led stripe, scale to 0-1, ^2, rescale to 0-2, scale for pwm
+      pwmWW=pow((brightness*enable_fadevalue)/2.0, BRIGHTNESSCURVE)  *2.0 *(1-temp) *PWM_MAX;
 
       if (pwmCW>PWM_MAX) { pwmCW=PWM_MAX; } //limit
       if (pwmWW>PWM_MAX) { pwmWW=PWM_MAX; } //limit