diff --git a/cad/adapter/adapter.scad b/cad/adapter/adapter.scad
index 835a081..52425a6 100644
--- a/cad/adapter/adapter.scad
+++ b/cad/adapter/adapter.scad
@@ -1,37 +1,41 @@
 $fn = 100;
 
 // element dimensions
-w = 59;
-d = 28;
+w = 60;
+d = 30;
 h = 4;
 
 // aditionnal parameters
-e = 3;
+e = 5;
+
+// internal values
+we = w + e;
+de = d + e;
 
 translate([0,0,e/2]);
-cube([w,d,e/2], true);
+cube([we,de,e/3], true);
 module tab() {
-    translate([-e/4,0,(e/2+h)/2]) {
+    translate([-e/4,0,(e/3+h)/2]) {
         cube([e/2,2*e,h], true);
         translate([-1.75*e,-e,h/2])
         rotate([0,-90,-90])
         linear_extrude(height = 2*e)
-        polygon([[0,e],[e/4,e],[0,2*e],[e/2,2*e]],
+        polygon([[0,1.2*e],[e/4,1.2*e],[0,2*e],[e/2,2*e]],
                 [[0,1,3,2]]);
     }
 }
 
-translate([w/2,-0.35*d,0])
+translate([we/2,-de/2+e,0])
 tab();
 
-translate([-w/2,0,0])
+translate([-we/2,0,0])
 rotate([0,0,180])
 tab();
 
-translate([8,d/2,0])
+translate([8,de/2,0])
 rotate([0,0,90])
 tab();
 
-translate([0,-d/2,0])
+translate([0,-de/2,0])
 rotate([0,0,-90])
 tab();
diff --git a/docs/Graphs.ods b/docs/Graphs.ods
index ab7beed..656048a 100644
Binary files a/docs/Graphs.ods and b/docs/Graphs.ods differ
diff --git a/src/drivers/timer.c b/src/drivers/timer.c
index acda55f..58d8900 100644
--- a/src/drivers/timer.c
+++ b/src/drivers/timer.c
@@ -300,9 +300,9 @@ int timer_enc_init(TIM_TypeDef* tmr) {
 	tmr->CCMR1 |= 0x9;
 	tmr->CCMR1 |= 0x9 << 8;
 	
-	// enable input channels
-	tmr->CCER |= 0x1;
-	tmr->CCER |= 0x1 << 4;
+	// enable input channels and invert them //TODO add an otpion for that
+	tmr->CCER |= 0x3;
+	tmr->CCER |= 0x3 << 4;
 
 	tmr->CR1 |= 0x1; //enable timer
 
diff --git a/src/main.c b/src/main.c
index eecf62a..ddcd172 100644
--- a/src/main.c
+++ b/src/main.c
@@ -32,7 +32,7 @@ uint8_t channels[3][2] = {
 
 vars_t vars = {
 	{},
-	2,
+	5,
 	2,
 	{},
 	1,
@@ -42,7 +42,7 @@ vars_t vars = {
 //------------------------------------------------------------------------------
 /* Timer IRQ */
 static void timeout_cb(void) {
-	//io_write(GPIOC, val, PIN_13);
+	io_write(GPIOC, val, PIN_13);
 	val = !val;
 
 	// set temp read flag
@@ -64,16 +64,22 @@ int16_t read_temp(uint8_t id) {
 /* main function */
 int main(void) {
 
+	//initialize variables
+	val = 0; //debug led
+	read_flag = 0; 
+	sensor_id = 0;
+
 	// configure clocks (necessary before using timers)
 	rcc_config_clock(CLOCK_CONFIG_PERFORMANCE, &sysclks);
 
 	// configure GPIO for LED
 	if(io_configure(GPIOC, PIN_13, IO_MODE_OUTPUT | IO_OUT_PUSH_PULL, 0)) 
 		return -1;
+	io_write(GPIOC, 1, PIN_13);
+
+	// configure GPIO for relay
 	if(io_configure(GPIOB, PIN_12, IO_MODE_OUTPUT | IO_OUT_PUSH_PULL, 0)) 
 		return -1;
-
-	io_write(GPIOC, 1, PIN_13);
 	io_write(GPIOB, 1, PIN_12);
 
 	// configure GPIOS for temperature sensors
@@ -98,14 +104,16 @@ int main(void) {
 
 	// main loop
 	while(1){
+
 		// process sensor values
 		if(read_flag) {
+
 			// clear flag
 			read_flag = 0;
 
 			// shift filter queue
 			int32_t sum = 0;
-			for(int i=0; i<(FILTER_LENGTH-1); ++i) {
+			for(int i=0; i<(FILTER_LENGTH-2); i++) {
 				temp_filter[sensor_id][i] = temp_filter[sensor_id][i+1];
 				sum += temp_filter[sensor_id][i];
 			}
@@ -129,12 +137,10 @@ int main(void) {
 					vars.start_treshold) {
 				vars.fan = 1;
 				io_set(GPIOB, PIN_12);
-				io_clear(GPIOC, PIN_13);
-			} else if((vars.temps[T_EXT] - vars.temps[vars.silo]) >= 
+			} else if((vars.temps[vars.silo] - vars.temps[T_EXT]) <= 
 					vars.stop_treshold) {
 				vars.fan = 0;
 				io_clear(GPIOB, PIN_12);
-				io_set(GPIOC, PIN_13);
 			}
 		}
 
diff --git a/src/ui.c b/src/ui.c
index 2cc0a8c..5e14f37 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -14,18 +14,24 @@ static const char* ui_default[] = {
 	"SILO:   Te:   ""\xDF""C",
 	"1:   ""\xDF""C  2:   ""\xDF""C"
 };
+
 static const char* ui_menu[] = {
 	" 1-Retour",
 	" 2-Silo:",
 	" 3-Start:",
 	" 4-Stop:",
-	" 5-Calibrer Te",
-	" 6-Calibrer T1",
-	" 7-Calibrer T2",
-	" 8-Test ventil",
+//	" 5-Calibrer Te",
+//	" 6-Calibrer T1",
+//	" 7-Calibrer T2",
+//	" 8-Test ventil",
 	" 1-Retour"
 };
 
+static const char* ui_interact[] = {
+	" lue:        ""\xDF""C",
+	" reelle:     ""\xDF""C"
+};
+
 //------------------------------------------------------------------------------
 /* internal functions */
 void show_bg(const char** bg) {
@@ -36,6 +42,42 @@ void show_bg(const char** bg) {
 	lcd_print(bg[1]);
 }
 
+void update_entry(uint8_t prev_entry, uint8_t value) {
+	// get vlaue in str form
+	char str[8]; //too long to be sure
+	num2str(str, value, 10);
+
+	// print value in the correct position
+	if(sel == prev_entry) lcd_set_cursor(14, 1);
+	else lcd_set_cursor(14, 0);
+	lcd_print(str);
+}
+
+void change_value(uint8_t entry, uint8_t* entry_val, int max) {
+	int local_val = *entry_val;
+	lcd_set_cursor(14,0);
+	while(!button_update) {
+		local_val = ((enc->CNT/2)%max) + 1;
+		char str[8];
+		num2str(str, local_val, 10);
+		lcd_print(str);
+		lcd_set_cursor(14,0);
+		timer_wait_ms(TIM1, 200, 0);
+	}
+	*entry_val = local_val;
+}
+
+void interact(uint8_t entry, uint8_t* entry_val) {
+	while(!button_update) {
+		lcd_set_cursor(10,0);
+		lcd_print("   ");
+		lcd_set_cursor(10,0);
+
+		lcd_set_cursor(10,0);
+		lcd_print("   ");
+	}
+}
+
 //------------------------------------------------------------------------------
 /* timeout timer cb */
 static void ui_sleep(void) {
@@ -44,7 +86,7 @@ static void ui_sleep(void) {
 
 /* encoder button gpio cb */
 static void ui_button_cb(void) {
-	for(int i=0; i<10000; ++i); //avoid double trigger
+	for(int i=0; i<1000000; ++i); //avoid double trigger
 	timer_start(tim);
 	button_update = 1;
 }
@@ -81,34 +123,6 @@ int ui_init(TIM_TypeDef* encoder, TIM_TypeDef* timeout, vars_t* vars_p) {
 	return 0;
 }
 
-void ui_update_entry(uint8_t prev_entry, uint8_t value) {
-	// get vlaue in str form
-	char str[8]; //too long to be sure
-	num2str(str, value, 10);
-
-	// print value in the correct position
-	if(sel == prev_entry) lcd_set_cursor(14, 1);
-	else lcd_set_cursor(14, 0);
-	lcd_print(str);
-
-}
-
-void ui_change_value(uint8_t entry, uint8_t* entry_val, int max) {
-	int local_val = *entry_val;
-	lcd_set_cursor(14,0);
-	while(!button_update) {
-		local_val = ((enc->CNT/2)%max) + 1;
-		char str[8];
-		num2str(str, local_val, 10);
-		lcd_print(str);
-		lcd_set_cursor(14,0);
-		timer_wait_ms(TIM1, 200, 0);
-	}
-	*entry_val = local_val;
-}
-	
-
-
 void ui_update(void) {
 	// manage button press
 	if(button_update) {
@@ -141,6 +155,10 @@ void ui_update(void) {
 				}
 
 				// otherwise interact with option
+				if(sel == UI_CAL_T_EXT || sel == UI_CAL_T1 
+									   || sel == UI_CAL_T2) {
+					show_bg(ui_interact);
+				}
 				lcd_send_cmd(LCD_DISP_CTRL | LCD_CTRL_DISP_ON | 
 							LCD_CTRL_CUR_ON | LCD_CTRL_BLINK_OFF);
 				timer_start(enc);
@@ -192,15 +210,15 @@ void ui_update(void) {
 
 				// show silo value if needed
 				if(sel == UI_RETURN || sel == UI_SILO) {
-					ui_update_entry(UI_RETURN, vars->silo);
+					update_entry(UI_RETURN, vars->silo);
 				}
 				// show start value if needed
 				if(sel == UI_SILO || sel == UI_START) {
-					ui_update_entry(UI_SILO, vars->start_treshold);
+					update_entry(UI_SILO, vars->start_treshold);
 				}
 				// show start value if needed
 				if(sel == UI_START || sel == UI_STOP) {
-					ui_update_entry(UI_START, vars->stop_treshold);
+					update_entry(UI_START, vars->stop_treshold);
 				}
 			}
 			break;
@@ -208,16 +226,14 @@ void ui_update(void) {
 		case UI_INTERACT:
 			switch(sel) {
 				case UI_SILO:
-					ui_change_value(UI_SILO, &vars->silo, 2);
+					change_value(UI_SILO, &vars->silo, 2);
 					break;
 				case UI_START:
-					ui_change_value(UI_START, &vars->start_treshold, 9);
+					change_value(UI_START, &vars->start_treshold, 9);
 					break;
 				case UI_STOP:
-					ui_change_value(UI_STOP, &vars->stop_treshold, 9);
+					change_value(UI_STOP, &vars->stop_treshold, 9);
 					break;
-
-
 			}
 		//---------------------
 		case UI_DEFAULT:
diff --git a/src/ui.h b/src/ui.h
index 4bcc2a0..cdce527 100644
--- a/src/ui.h
+++ b/src/ui.h
@@ -53,7 +53,7 @@ enum ui_menu {
 	UI_TEST			= 7
 };
 
-#define MENU_LENGHT 7
+#define MENU_LENGHT 3
 
 //------------------------------------------------------------------------------
 /** ui_init
diff --git a/src/utils.h b/src/utils.h
index 7097aa0..50189a2 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -6,5 +6,7 @@
 
 uint32_t num2str(char *s, int number, uint8_t base);
 
+//void print_num(int number, 
+
 #endif