diff --git a/src/driver/drv_ds1820_simple.c b/src/driver/drv_ds1820_simple.c
new file mode 100644
index 000000000..fa4daeda1
--- /dev/null
+++ b/src/driver/drv_ds1820_simple.c
@@ -0,0 +1,409 @@
+#include "drv_ds1820_simple.h"
+
+static uint8_t   dsread=0;
+static int Pin;
+static int t=-127;
+
+
+// usleep adopted from DHT driver
+
+void usleepds(int r) //delay function do 10*r nops, because rtos_delay_milliseconds is too much
+{
+#ifdef WIN32
+	// not possible on Windows port
+#elif PLATFORM_BL602 
+	for (volatile int i = 0; i < r; i++) {
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	// 5
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	//10
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+	}
+#elif PLATFORM_W600
+	for (volatile int i = 0; i < r; i++) {
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	// 5
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+	}
+#elif PLATFORM_W800
+	for (volatile int i = 0; i < r; i++) {
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	// 5
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	//10
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	//15
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	//20
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+	}
+#elif PLATFORM_BEKEN
+	for (volatile int i = 0; i < r; i++) {
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	// 5
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+	}
+#elif PLATFORM_LN882H
+	for (volatile int i = 0; i < r; i++) {
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	// 5
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	//10
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");	//15
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+	}
+#else
+	for (volatile int i = 0; i < r; i++) {
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+	}
+#endif
+}
+
+
+/*
+//static int usleepfact=3;
+
+#ifdef WIN32
+	// not possible on Windows port
+#elif PLATFORM_BL602 
+static int usleepfact = 13;
+#elif PLATFORM_W600
+static int usleepfact = 7;
+#elif PLATFORM_W800
+//static int usleepfact = 33;
+static int usleepfact = 25;
+#elif PLATFORM_BEKEN
+//static int usleepfact = 6;
+static int usleepfact = 3;
+#elif PLATFORM_LN882H
+//static int usleepfact = 16;
+static int usleepfact = 10;
+#else
+static int usleepfact = 3;
+#endif
+
+
+void usleepds(int r) //delay function do 10*r nops, because rtos_delay_milliseconds is too much
+{
+	for (volatile int i = 0; i < r*usleepfact; i++) {
+//		__asm__("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\nnop");
+		__asm__("nop\nnop\nnop\nnop\nnop");
+	}
+
+
+}
+
+*/
+
+
+
+
+/*
+
+timing numbers and general code idea from
+
+https://www.analog.com/en/resources/technical-articles/1wire-communication-through-software.html
+
+Parameter 	Speed 		Recommended (µs)
+A 		Standard 	6
+B 		Standard 	64
+C 		Standard 	60
+D 		Standard 	10
+E 		Standard 	9
+F 		Standard 	55
+G 		Standard 	0
+H 		Standard 	480
+I 		Standard 	70
+J 		Standard 	410
+
+*/
+
+#define OWtimeA	6
+#define OWtimeB	64
+#define OWtimeC	60
+#define OWtimeD	10
+#define OWtimeE	9
+#define OWtimeF	55
+#define OWtimeG	0
+#define OWtimeH	480
+#define OWtimeI	70
+#define OWtimeJ	410
+
+
+int OWReset(int Pin)
+{
+        int result;
+
+        usleepds(OWtimeG);
+        HAL_PIN_Setup_Output(Pin);
+        HAL_PIN_SetOutputValue(Pin,0); // Drives DQ low
+        usleepds(OWtimeH);
+        HAL_PIN_SetOutputValue(Pin,1); // Releases the bus
+        usleepds(OWtimeI);
+        HAL_PIN_Setup_Input(Pin);
+        result = HAL_PIN_ReadDigitalInput(Pin) ^ 0x01; // Sample for presence pulse from slave
+        usleepds(OWtimeJ); // Complete the reset sequence recovery
+        return result; // Return sample presence pulse result
+}
+
+//-----------------------------------------------------------------------------
+// Send a 1-Wire write bit. Provide 10us recovery time.
+//
+void OWWriteBit(int Pin, int bit)
+{
+        if (bit)
+        {
+                // Write '1' bit
+                HAL_PIN_Setup_Output(Pin);
+                HAL_PIN_SetOutputValue(Pin,0); // Drives DQ low
+                usleepds(OWtimeA);
+                HAL_PIN_SetOutputValue(Pin,1); // Releases the bus
+                usleepds(OWtimeB); // Complete the time slot and 10us recovery
+        }
+        else
+        {
+                // Write '0' bit
+                HAL_PIN_Setup_Output(Pin);
+                HAL_PIN_SetOutputValue(Pin,0); // Drives DQ low
+                usleepds(OWtimeC);
+                HAL_PIN_SetOutputValue(Pin,1); // Releases the bus
+                usleepds(OWtimeD);
+        }
+}
+
+//-----------------------------------------------------------------------------
+// Read a bit from the 1-Wire bus and return it. Provide 10us recovery time.
+//
+int OWReadBit(int Pin)
+{
+        int result;
+
+        HAL_PIN_Setup_Output(Pin);
+        HAL_PIN_SetOutputValue(Pin,0); // Drives DQ low
+        usleepds(OWtimeA);
+        HAL_PIN_SetOutputValue(Pin,1); // Releases the bus
+        usleepds(OWtimeE);
+        HAL_PIN_Setup_Input(Pin);
+//        result = HAL_PIN_ReadDigitalInput(Pin) ^ 0x01; // Sample for presence pulse from slave
+        result = HAL_PIN_ReadDigitalInput(Pin); // Sample for presence pulse from slave
+        usleepds(OWtimeF); // Complete the time slot and 10us recovery
+        return result;
+}
+
+//-----------------------------------------------------------------------------
+// Poll if DS1820 temperature conversion is complete
+//
+int DS1820TConversionDone(int Pin)
+{
+        int result;
+
+        // Write '1' bit
+        OWWriteBit(Pin, 1);
+	// check for '1' - conversion complete (will be '0' else)
+        return OWReadBit(Pin);
+}
+
+
+//-----------------------------------------------------------------------------
+// Write 1-Wire data byte
+//
+void OWWriteByte(int Pin, int data)
+{
+        int loop;
+
+        // Loop to write each bit in the byte, LS-bit first
+        for (loop = 0; loop < 8; loop++)
+        {
+                OWWriteBit(Pin, data & 0x01);
+
+                // shift the data byte for the next bit
+                data >>= 1;
+        }
+}
+
+//-----------------------------------------------------------------------------
+// Read 1-Wire data byte and return it
+//
+int OWReadByte(int Pin)
+{
+        int loop, result=0;
+
+        for (loop = 0; loop < 8; loop++)
+        {
+                // shift the result to get it ready for the next bit
+                result >>= 1;
+
+                // if result is one, then set MS bit
+                if (OWReadBit(Pin))
+                        result |= 0x80;
+        }
+        return result;
+}
+
+//-----------------------------------------------------------------------------
+// Write a 1-Wire data byte and return the sampled result.
+//
+int OWTouchByte(int Pin, int data)
+{
+        int loop, result=0;
+
+        for (loop = 0; loop < 8; loop++)
+        {
+                // shift the result to get it ready for the next bit
+                result >>= 1;
+
+                // If sending a '1' then read a bit else write a '0'
+                if (data & 0x01)
+                {
+                        if (OWReadBit(Pin))
+                                result |= 0x80;
+                }
+                else
+                        OWWriteBit(Pin,0);
+
+                // shift the data byte for the next bit
+                data >>= 1;
+        }
+        return result;
+}
+
+
+int DS1820_getTemp() {
+	return t;
+}
+
+
+void DS1820_driver_Init(){};
+
+
+void DS1820_AppendInformationToHTTPIndexPage(http_request_t *request)
+{
+
+        hprintf255(request, "<h5>DS1820 Temperature: %.2f C </h5>",(float)t/100);
+}
+
+
+void DS1820_OnEverySecond() {
+
+	// for now just find the pin used
+	//
+	Pin=PIN_FindPinIndexForRole(IOR_DS1820_IO, 99);
+
+	if (Pin != 99) {	// only if pin is set
+		// request temp if conversion was requested two seconds after request
+		// if (dsread == 1 && g_secondsElapsed % 5 == 2) {
+		// better if we don't use parasitic power, we can check if conversion is ready		
+		if (dsread == 1 && DS1820TConversionDone(Pin) == 1) {
+		
+			uint8_t Low=0,High=0,negative=0;
+			int Val,Tc;
+
+			if (OWReset(Pin) == 0) addLogAdv(LOG_ERROR, LOG_FEATURE_CFG, "DS1820 - Pin=%i  -- Reset failed",Pin); 
+			OWWriteByte(Pin,0xCC);
+			OWWriteByte(Pin,0xBE);
+
+			Low = OWReadByte(Pin);
+			High = OWReadByte(Pin);
+
+
+			Val = (High << 8) + Low; // combine bytes to integer
+			negative = (High >= 8); // negative temperature
+			if (negative)
+			{
+			  Val = (Val ^ 0xffff) + 1;
+			}
+			// Temperature is returned in multiples of 1/16 °C
+			//  we want a simple way to display e.g. xx.yy °C, so just multiply with 100 and we get xxyy 
+			//  --> the last two digits will be the fractional part  (Val%100)
+			// -->  the whole part of temperature is (int)Val/100
+			// so we want 100/16 = 6.25 times the value (the sign to be able to show negative temperatures is in "factor") 
+			Tc = (6 * Val) + Val / 4 ;
+			t = negative ? -1 : 1 * Tc ;
+			dsread=0;
+			addLogAdv(LOG_INFO, LOG_FEATURE_CFG, "DS1820 - Pin=%i temp=%s%i.%i \r\n",Pin, negative ? "-" : "+", (int)Tc/100 , (int)Tc%100);
+			addLogAdv(LOG_INFO, LOG_FEATURE_CFG, "DS1820 - High=%i Low=%i Val=%i Tc=%i \r\n",High, Low, Val,Tc);
+		}
+		else if (g_secondsElapsed % 5 == 0) {	// every 5 seconds
+				// ask for "conversion" 
+
+			if (OWReset(Pin) == 0){
+				addLogAdv(LOG_ERROR, LOG_FEATURE_CFG, "DS1820 - Pin=%i  -- Reset failed",Pin);
+
+				// if device is not found, maybe "usleep" is not working as expected
+				// lets do usleepds() with numbers 50.000 and 100.00
+				// if all is well, it should take 50ms and 100ms
+				// if not, we need to "calibrate" the loop
+				int tempsleep=50000;
+				TickType_t actTick=portTICK_RATE_MS*xTaskGetTickCount();
+				usleepds(tempsleep);
+				int duration = (int)(portTICK_RATE_MS*xTaskGetTickCount()-actTick);
+
+				addLogAdv(LOG_ERROR, LOG_FEATURE_CFG, "DS1820 - usleepds(%i) took %i ms ",tempsleep,duration);
+
+
+
+				tempsleep=100000;
+				actTick=portTICK_RATE_MS*xTaskGetTickCount();
+				usleepds(tempsleep);
+				duration = (int)(portTICK_RATE_MS*xTaskGetTickCount()-actTick);
+
+				addLogAdv(LOG_ERROR, LOG_FEATURE_CFG, "DS1820 - usleepds(%i) took %i ms ",tempsleep,duration);
+	
+				if (duration < 95 || duration > 105){
+					// calc a new factor for usleepds
+					addLogAdv(LOG_ERROR, LOG_FEATURE_CFG, "usleepds duration divergates - proposed factor to adjust usleepds %f ",(float)100/duration);
+				}
+				
+			} 
+			else {
+				OWWriteByte(Pin,0xCC);
+				OWWriteByte(Pin,0x44);
+				addLogAdv(LOG_INFO, LOG_FEATURE_CFG, "DS1820 - asked for conversion - Pin %i",Pin);
+				dsread=1;
+			}
+		}
+
+	
+	}
+}
diff --git a/src/driver/drv_ds1820_simple.h b/src/driver/drv_ds1820_simple.h
new file mode 100644
index 000000000..29ab18fb4
--- /dev/null
+++ b/src/driver/drv_ds1820_simple.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include "../new_common.h"
+#include "../new_pins.h"
+#include "../new_cfg.h"
+// Commands register, execution API and cmd tokenizer
+#include "../cmnds/cmd_public.h"
+#include "../mqtt/new_mqtt.h"
+#include "../logging/logging.h"
+#include "drv_local.h"
+#include "drv_uart.h"
+#include "../httpserver/new_http.h"
+#include "../hal/hal_pins.h"
+
+//int OWReset(int Pin);
+//void OWWriteByte(int Pin, int data);
+//int OWReadByte(int Pin);
+// int OWConversionDone(int Pin);
+int DS1820_getTemp();
+void DS1820_driver_Init();
+void DS1820_OnEverySecond();
+void DS1820_AppendInformationToHTTPIndexPage(http_request_t *request);
+
diff --git a/src/driver/drv_main.c b/src/driver/drv_main.c
index 13fac3e62..8f4a4463d 100644
--- a/src/driver/drv_main.c
+++ b/src/driver/drv_main.c
@@ -12,6 +12,7 @@
 #include "drv_test_drivers.h"
 #include "drv_tuyaMCU.h"
 #include "drv_uart.h"
+#include "drv_ds1820_simple.h"
 
 
 typedef struct driver_s {
@@ -341,6 +342,13 @@ static driver_t g_drivers[] = {
 	//drvdetail:"requires":""}
 	{ "AHT2X",	AHT2X_Init,	AHT2X_OnEverySecond,	AHT2X_AppendInformationToHTTPIndexPage,	NULL,	AHT2X_StopDriver,	NULL,	false },
 #endif
+#if ENABLE_DRIVER_DS1820
+	//drvdetail:{"name":"DS1820",
+	//drvdetail:"title":"TODO",
+	//drvdetail:"descr":"Very simple driver for oneWire temperature sensor DS1820.",
+	//drvdetail:"requires":""}
+	{ "DS1820",     DS1820_driver_Init, DS1820_OnEverySecond,                       DS1820_AppendInformationToHTTPIndexPage, NULL, NULL, NULL,  false }
+#endif
 #if ENABLE_DRIVER_HT16K33
 	//drvdetail:{"name":"HT16K33",
 	//drvdetail:"title":"TODO",
diff --git a/src/httpserver/new_http.c b/src/httpserver/new_http.c
index 057e6b61b..a7e38f4e4 100644
--- a/src/httpserver/new_http.c
+++ b/src/httpserver/new_http.c
@@ -473,7 +473,7 @@ const char* htmlPinRoleNames[] = {
 	"BAT_Relay_n",
 	"KP18058_CLK",
 	"KP18058_DAT",
-	"error",
+	"DS1820_IO",
 	"error",
 	"error",
 	"error",
diff --git a/src/new_pins.h b/src/new_pins.h
index 6c8900a76..e601857fc 100644
--- a/src/new_pins.h
+++ b/src/new_pins.h
@@ -551,6 +551,13 @@ typedef enum ioRole_e {
 	//iodetail:"file":"new_pins.h",
 	//iodetail:"driver":""}
 	IOR_KP18058_DAT,
+	//iodetail:{"name":"DS1820",
+	//iodetail:"title":"TODO",
+	//iodetail:"descr":"vers simple OneWire Temp sensor DS1820",
+	//iodetail:"enum":"DS1820_IO",
+	//iodetail:"file":"new_pins.h",
+	//iodetail:"driver":""}
+	IOR_DS1820_IO,
 	//iodetail:{"name":"Total_Options",
 	//iodetail:"title":"TODO",
 	//iodetail:"descr":"Current total number of available IOR roles",