diff --git a/ATC_Thermometer/app.c b/ATC_Thermometer/app.c
index 7e7a8436..7070e6bd 100644
--- a/ATC_Thermometer/app.c
+++ b/ATC_Thermometer/app.c
@@ -68,6 +68,7 @@ void user_init_normal(void){//this will get executed one time after power up
 }
 
 _attribute_ram_code_ void user_init_deepRetn(void){//after sleep this will get executed
+	init_lcd_deepsleep();
 	blc_ll_initBasicMCU();
 	rf_set_power_level_index (RF_POWER_P3p01dBm);
 	blc_ll_recoverDeepRetention();
diff --git a/ATC_Thermometer/i2c.c b/ATC_Thermometer/i2c.c
index 94c10bf5..2beb5b1e 100644
--- a/ATC_Thermometer/i2c.c
+++ b/ATC_Thermometer/i2c.c
@@ -10,7 +10,6 @@ RAM bool i2c_sending;
 void init_i2c(){
 	i2c_gpio_set(I2C_GPIO_GROUP_C2C3); 
 	i2c_master_init(0x78, (uint8_t)(CLOCK_SYS_CLOCK_HZ/(4*400000)) );
-	reg_i2c_mode |= FLD_I2C_HOLD_MASTER;// Enable clock stretching for Sensor
 }
 
 void send_i2c(uint8_t device_id, uint8_t *buffer, int dataLen){
@@ -19,4 +18,14 @@ void send_i2c(uint8_t device_id, uint8_t *buffer, int dataLen){
 	i2c_set_id(device_id);
 	i2c_write_series(0, 0, (uint8_t*)buffer,dataLen);
 	i2c_sending=false;
+}
+
+uint8_t test_i2c_device(uint8_t address){	
+	reg_i2c_id = address<<1;
+	reg_i2c_ctrl = FLD_I2C_CMD_START | FLD_I2C_CMD_ID;
+	while(reg_i2c_status & FLD_I2C_CMD_BUSY);
+	reg_i2c_ctrl = FLD_I2C_CMD_STOP;
+	while(reg_i2c_status & FLD_I2C_CMD_BUSY	);
+	
+return (reg_i2c_status & FLD_I2C_NAK)?0:1;
 }
\ No newline at end of file
diff --git a/ATC_Thermometer/i2c.h b/ATC_Thermometer/i2c.h
index 96554197..ede688c2 100644
--- a/ATC_Thermometer/i2c.h
+++ b/ATC_Thermometer/i2c.h
@@ -4,4 +4,5 @@
 
 void init_i2c();
 void send_i2c(uint8_t device_id, uint8_t *buffer, int dataLen);
+uint8_t test_i2c_device(uint8_t address);
 
diff --git a/ATC_Thermometer/lcd.c b/ATC_Thermometer/lcd.c
index 4bdc80d8..3ed5afc5 100644
--- a/ATC_Thermometer/lcd.c
+++ b/ATC_Thermometer/lcd.c
@@ -12,27 +12,81 @@ const uint8_t lcd_init_cmd[] = {0x80,0x3B,0x80,0x02,0x80,0x0F,0x80,0x95,0x80,0x8
 RAM uint8_t display_buff[6];
 const uint8_t display_numbers[16] = {0xF5,0x05,0xD3,0x97,0x27,0xb6,0xf6,0x15,0xf7,0xb7,0x77,0xe6,0xf0,0xc7,0xf2,0x72};
 
-void init_lcd(){	
+RAM uint8_t lcd_version;
+RAM uint8_t i2c_address_lcd = 0x78; // B1.4 uses Address 0x78 and B1.9 uses 0x7c
 
-	gpio_set_func(GPIO_PB6, AS_GPIO);//LCD on low temp needs this, its an unknown pin going to the LCD controller chip
-	gpio_set_output_en(GPIO_PB6, 0);
-	gpio_set_input_en(GPIO_PB6, 1); 
-	gpio_setup_up_down_resistor(GPIO_PB6, PM_PIN_PULLUP_10K);
 	
-	sleep_us(50000);
+void init_lcd(){
 	
-	send_i2c(0x78,lcd_init_cmd, sizeof(lcd_init_cmd));
+	if(test_i2c_device(0x3C)){// B1.4
+		lcd_version = 0;
+		i2c_address_lcd = 0x78;
+	}else if(test_i2c_device(0x3E)){// B1.9
+		lcd_version = 2;
+		i2c_address_lcd = 0x7C;
+	}else{// B1.6 uses UART and is not testable this way
+		lcd_version = 1;
+	}
+	
+	if(lcd_version == 0){// B1.4 Hardware
+		gpio_set_func(GPIO_PB6, AS_GPIO);//LCD on low temp needs this, its an unknown pin going to the LCD controller chip
+		gpio_set_output_en(GPIO_PB6, 0);
+		gpio_set_input_en(GPIO_PB6, 1); 
+		gpio_setup_up_down_resistor(GPIO_PB6, PM_PIN_PULLUP_10K);	
+		sleep_us(50000);
+		send_i2c(i2c_address_lcd,lcd_init_cmd, sizeof(lcd_init_cmd));
+	
+	}else if(lcd_version == 1){// B1.6 Hardware
+
+		init_lcd_deepsleep();
+	
+	}else if(lcd_version == 2){// B1.9 Hardware
+		//UNKNOWN LCD VERSION
+	}		
 	send_to_lcd_long(0x00,0x00,0x00,0x00,0x00,0x00);	
 }
+
+void init_lcd_deepsleep(){
+	if(lcd_version != 1)
+		return;
+	
+	uart_gpio_set(UART_TX_PD7, UART_RX_PB0);
+	uart_reset();
+	uart_init(61,  9, PARITY_NONE, STOP_BIT_ONE);	
+	uart_dma_enable(0, 0);
+	dma_chn_irq_enable(0, 0);
+	uart_irq_enable(0,0);
+	uart_ndma_irq_triglevel(0,0);
+}
+
+void uart_send_lcd(uint8_t byte1, uint8_t byte2, uint8_t byte3, uint8_t byte4, uint8_t byte5, uint8_t byte6){
+	uint8_t trans_buff[13] = {0x00,0x00,0x00,0x00,0xAA,byte6,byte5,byte4,byte3,byte2,byte1,(byte1 ^byte2 ^byte3 ^byte4 ^byte5 ^byte6),0x55};	
+	for(unsigned char i=0;i<13;i++){
+		uart_ndma_send_byte(trans_buff[i]);
+	}
+}
 	
 void send_to_lcd_long(uint8_t byte1, uint8_t byte2, uint8_t byte3, uint8_t byte4, uint8_t byte5, uint8_t byte6){
+	
+if(lcd_version == 0){// B1.4 Hardware
     uint8_t lcd_set_segments[] =    {0x80,0x40,0xC0,byte1,0xC0,byte2,0xC0,byte3,0xC0,byte4,0xC0,byte5,0xC0,byte6,0xC0,0x00,0xC0,0x00};
-	send_i2c(0x78,lcd_set_segments, sizeof(lcd_set_segments));
+	send_i2c(i2c_address_lcd,lcd_set_segments, sizeof(lcd_set_segments));
+}else if(lcd_version == 1){// B1.6 Hardware
+	uart_send_lcd(byte1,byte2,byte3,byte4,byte5,byte6);
+}else if(lcd_version == 2){// B1.9 Hardware
+//UNKNOWN LCD VERSION
+}	
 }
 	
 void send_to_lcd(uint8_t byte1, uint8_t byte2, uint8_t byte3, uint8_t byte4, uint8_t byte5, uint8_t byte6){
+if(lcd_version == 0){// B1.4 Hardware
     uint8_t lcd_set_segments[] =    {0x80,0x40,0xC0,byte1,0xC0,byte2,0xC0,byte3,0xC0,byte4,0xC0,byte5,0xC0,byte6};
-	send_i2c(0x78,lcd_set_segments, sizeof(lcd_set_segments));
+	send_i2c(i2c_address_lcd,lcd_set_segments, sizeof(lcd_set_segments));
+}else if(lcd_version == 1){// B1.6 Hardware
+	uart_send_lcd(byte1,byte2,byte3,byte4,byte5,byte6);
+}else if(lcd_version == 2){// B1.9 Hardware
+//UNKNOWN LCD VERSION
+}	
 }
 
 void update_lcd(){
diff --git a/ATC_Thermometer/lcd.h b/ATC_Thermometer/lcd.h
index f3b3e623..c37d69bc 100644
--- a/ATC_Thermometer/lcd.h
+++ b/ATC_Thermometer/lcd.h
@@ -4,6 +4,7 @@
 #include <stdint.h>
 
 void init_lcd();
+void init_lcd_deepsleep();
 void update_lcd();
 void show_temp_symbol(uint8_t symbol);
 void show_battery_symbol(bool state);
@@ -13,3 +14,4 @@ void show_smiley(uint8_t state);
 void show_atc_mac();
 void show_ble_symbol(bool state);
 void send_to_lcd_long(uint8_t byte1, uint8_t byte2, uint8_t byte3, uint8_t byte4, uint8_t byte5, uint8_t byte6);
+void uart_send_lcd(uint8_t byte1, uint8_t byte2, uint8_t byte3, uint8_t byte4, uint8_t byte5, uint8_t byte6);
diff --git a/ATC_Thermometer/sensor.c b/ATC_Thermometer/sensor.c
index 98d55b90..df92b566 100644
--- a/ATC_Thermometer/sensor.c
+++ b/ATC_Thermometer/sensor.c
@@ -12,22 +12,69 @@ const uint8_t sens_wakeup[] = {0x35,0x17};
 const uint8_t sens_sleep[] = {0xB0,0x98};
 const uint8_t sens_reset[] = {0x80,0x5D};
 
+const uint8_t measure_cmd[] = {0xfd};
+	
+//Since we now got version B1.4 B1.6 and B1.9 of the Thermometer we need to detect the correct sensor it is using
+// B1.4 = SHTC3 = 0 = address 0x70/0xE0
+// B1.6 and B1.9 = SHV4 = 1 = address 0x44/0x88
+RAM uint8_t sensor_version;
+RAM uint8_t i2c_address_sensor = 0xE0;
+
 void init_sensor(){	
-	send_i2c(0xE0,sens_wakeup, sizeof(sens_wakeup));
-	sleep_us(240);
-	send_i2c(0xE0,sens_reset, sizeof(sens_reset));
-	sleep_us(240);
-	send_i2c(0xE0,sens_sleep, sizeof(sens_sleep));
+
+	if(test_i2c_device(0x70)){
+		sensor_version = 0;
+		i2c_address_sensor = 0xE0;
+	}else if(test_i2c_device(0x44)){
+		sensor_version = 1;
+		i2c_address_sensor = 0x88;
+	}
+
+
+	if(sensor_version == 0){
+		send_i2c(i2c_address_sensor,sens_wakeup, sizeof(sens_wakeup));
+		sleep_us(240);
+		send_i2c(i2c_address_sensor,sens_reset, sizeof(sens_reset));
+		sleep_us(240);
+		send_i2c(i2c_address_sensor,sens_sleep, sizeof(sens_sleep));
+	}else if(sensor_version == 1){
+		send_i2c(i2c_address_sensor,0x94, 1);	
+		sleep_us(1000);
+	}else if(sensor_version == 2){
+		
+	}else{
+		//UNKNOWN SENSOR, how did we got here ???
+	}
 }
 
 void read_sensor(int16_t *temp, uint16_t *humi){
-	send_i2c(0xE0,sens_wakeup, sizeof(sens_wakeup));	
+if(sensor_version == 0){
+	
+	send_i2c(i2c_address_sensor,sens_wakeup, sizeof(sens_wakeup));	
 	sleep_us(240);
 	uint8_t read_buff[5];
-	i2c_set_id(0xE0);
+	reg_i2c_mode |= FLD_I2C_HOLD_MASTER;// Enable clock stretching for Sensor
+	i2c_set_id(i2c_address_sensor);
 	i2c_read_series(0x7CA2, 2, (uint8_t*)read_buff,  5);
-	send_i2c(0xE0,sens_sleep, sizeof(sens_sleep));
+	reg_i2c_mode &= ~FLD_I2C_HOLD_MASTER;// Disable clock stretching for Sensor
+	send_i2c(i2c_address_sensor,sens_sleep, sizeof(sens_sleep));
 	
     *temp = ((1750*(read_buff[0]<<8 | read_buff[1]))>>16)-450;
     *humi =  (100 *(read_buff[3] << 8 | read_buff[4]))>>16;
+	
+}else if(sensor_version == 1){
+	send_i2c(i2c_address_sensor,measure_cmd, sizeof(measure_cmd));	
+	sleep_us(1000*10);
+	uint8_t read_buff[5];
+	i2c_set_id(i2c_address_sensor);
+	i2c_read_series(0, 0, (uint8_t*)read_buff,  5);
+
+    *temp = ((1750*(read_buff[0]<<8 | read_buff[1]))>>16)-450;
+    *humi =  (((1250 *(read_buff[3] << 8 | read_buff[4]))>>16)-60)/10;
+	
+}else if(sensor_version == 2){
+	
+}else{
+	//UNKNOWN SENSOR, how did we got here ???
+}
 }