diff --git a/app/include/user_modules.h b/app/include/user_modules.h
index 009accd9..2818ed7f 100644
--- a/app/include/user_modules.h
+++ b/app/include/user_modules.h
@@ -22,7 +22,6 @@
 //#define LUA_USE_MODULES_CRON
 //#define LUA_USE_MODULES_CRYPTO
 #define LUA_USE_MODULES_DHT
-//#define LUA_USE_MODULES_DS18B20
 //#define LUA_USE_MODULES_ENCODER
 //#define LUA_USE_MODULES_ENDUSER_SETUP // USE_DNS in dhcpserver.h needs to be enabled for this module to work.
 #define LUA_USE_MODULES_FILE
diff --git a/app/modules/ds18b20.c b/app/modules/ds18b20.c
deleted file mode 100644
index 4e58da11..00000000
--- a/app/modules/ds18b20.c
+++ /dev/null
@@ -1,305 +0,0 @@
-//***************************************************************************
-// DS18B20 module for ESP8266 with nodeMCU
-// fetchbot @github
-// MIT license, http://opensource.org/licenses/MIT
-//***************************************************************************
-
-#include "module.h"
-#include "lauxlib.h"
-#include "platform.h"
-#include "osapi.h"
-#include "driver/onewire.h"
-#include "c_stdio.h"
-#include "c_stdlib.h"
-
-//***************************************************************************
-// OW ROM COMMANDS
-//***************************************************************************
-
-#define DS18B20_ROM_SEARCH				(0xF0)
-#define DS18B20_ROM_READ				(0x33)
-#define DS18B20_ROM_MATCH				(0x55)
-#define DS18B20_ROM_SKIP				(0xCC)
-#define DS18B20_ROM_SEARCH_ALARM		(0xEC)
-
-//***************************************************************************
-// OW FUNCTION COMMANDS
-//***************************************************************************
-
-#define DS18B20_FUNC_CONVERT			(0x44)
-#define DS18B20_FUNC_SCRATCH_WRITE		(0x4E)
-#define DS18B20_FUNC_SCRATCH_READ		(0xBE)
-#define DS18B20_FUNC_SCRATCH_COPY		(0x48)
-#define DS18B20_FUNC_E2_RECALL			(0xB8)
-#define DS18B20_FUNC_POWER_READ			(0xB4)
-
-//***************************************************************************
-// Initial EEPROM values
-//***************************************************************************
-
-#define DS18B20_EEPROM_TH				(0x4B)		// 75 degree
-#define DS18B20_EEPROM_TL				(0x46)		// 70 degree
-#define DS18B20_EEPROM_RES				(0x7F)		// 12 bit resolution
-
-//***************************************************************************
-
-static uint8_t ds18b20_bus_pin;
-static uint8_t ds18b20_device_family;
-static uint8_t ds18b20_device_search = 0;
-static uint8_t ds18b20_device_index;
-static uint8_t ds18b20_device_par;
-static uint8_t ds18b20_device_conf[3];
-static uint8_t ds18b20_device_rom[8];
-static uint8_t ds18b20_device_scratchpad[9];
-static double ds18b20_device_scratchpad_temp;
-static int ds18b20_device_scratchpad_temp_dec;
-static uint8_t ds18b20_device_scratchpad_conf;
-static uint8_t ds18b20_device_res = 12;			// 12 bit resolution (750ms conversion time)
-
-os_timer_t ds18b20_timer;						// timer for conversion delay
-int ds18b20_timer_ref;							// callback when readout is ready
-
-int ds18b20_table_ref;
-static int ds18b20_table_offset;
-
-static int ds18b20_lua_readoutdone(void);
-
-// Setup onewire bus for DS18B20 temperature sensors
-// Lua: ds18b20.setup(OW_BUS_PIN)
-static int ds18b20_lua_setup(lua_State *L) {
-
-	platform_print_deprecation_note("ds18b20 C module superseded by Lua implementation", "soon");
-
-	// check ow bus pin value
-	if (!lua_isnumber(L, 1) || lua_isnumber(L, 1) == 0) {
-		return luaL_error(L, "wrong 1-wire pin");
-	}
-
-	ds18b20_bus_pin = luaL_checkinteger(L, 1);
-	MOD_CHECK_ID(ow, ds18b20_bus_pin);
-	onewire_init(ds18b20_bus_pin);
-}
-
-static int ds18b20_set_device(uint8_t *ds18b20_device_rom) {
-	onewire_reset(ds18b20_bus_pin);
-	onewire_select(ds18b20_bus_pin, ds18b20_device_rom);
-	onewire_write(ds18b20_bus_pin, DS18B20_FUNC_SCRATCH_WRITE, 0);
-	onewire_write_bytes(ds18b20_bus_pin, ds18b20_device_conf, 3, 0);
-}
-
-// Change sensor settings
-// Lua: ds18b20.setting(ROM, RES)
-static int ds18b20_lua_setting(lua_State *L) {
-	// check rom table and resolution setting
-	if (!lua_istable(L, 1) || !lua_isnumber(L, 2)) {
-		return luaL_error(L, "wrong arg range");
-	}
-
-	ds18b20_device_res = luaL_checkinteger(L, 2);
-
-	if (!((ds18b20_device_res == 9) || (ds18b20_device_res == 10) || (ds18b20_device_res == 11) || (ds18b20_device_res == 12))) {
-		return luaL_error(L, "Invalid argument: resolution");
-	}
-
-	// no change to th and tl setting
-	ds18b20_device_conf[0] = DS18B20_EEPROM_TH;
-	ds18b20_device_conf[1] = DS18B20_EEPROM_TL;
-	ds18b20_device_conf[2] = ((ds18b20_device_res - 9) << 5) + 0x1F;
-
-	uint8_t table_len = lua_objlen(L, 1);
-
-	const char *str[table_len];
-	const char *sep = ":";
-
-	uint8_t string_index = 0;
-
-	lua_pushnil(L);
-	while (lua_next(L, -3)) {
-		str[string_index] = lua_tostring(L, -1);
-		lua_pop(L, 1);
-		string_index++;
-	}
-	lua_pop(L, 1);
-
-	for (uint8_t i = 0; i < string_index; i++) {
-		for (uint8_t j = 0; j < 8; j++) {
-			ds18b20_device_rom[j] = strtoul(str[i], NULL, 16);
-			str[i] = strchr(str[i], *sep);
-			if (str[i] == NULL || *str[i] == '\0') break;
-			str[i]++;
-		}
-		ds18b20_set_device(ds18b20_device_rom);
-	}
-
-	// set conversion delay once to max if sensors with higher resolution still on the bus
-	ds18b20_device_res = 12;
-
-	return 0;
-}
-
-#include "pm/swtimer.h"
-
-// Reads sensor values from all devices
-// Lua: 	ds18b20.read(function(INDEX, ROM, RES, TEMP, TEMP_DEC, PAR) print(INDEX, ROM, RES, TEMP, TEMP_DEC, PAR) end, ROM[, FAMILY])
-static int ds18b20_lua_read(lua_State *L) {
-
-	luaL_argcheck(L, (lua_type(L, 1) == LUA_TFUNCTION || lua_type(L, 1) == LUA_TLIGHTFUNCTION), 1, "Must be function");
-
-	lua_pushvalue(L, 1);
-	ds18b20_timer_ref = luaL_ref(L, LUA_REGISTRYINDEX);
-
-	if (!lua_istable(L, 2)) {
-		return luaL_error(L, "wrong arg range");
-	}
-
-	if (lua_isnumber(L, 3)) {
-		ds18b20_device_family = luaL_checkinteger(L, 3);
-		onewire_target_search(ds18b20_bus_pin, ds18b20_device_family);
-		ds18b20_table_offset = -3;
-	} else {
-		ds18b20_table_offset = -2;
-	}
-
-	lua_pushvalue(L, 2);
-	ds18b20_table_ref = luaL_ref(L, LUA_REGISTRYINDEX);
-
-	lua_pushnil(L);
-	if (lua_next(L, ds18b20_table_offset)) {
-		lua_pop(L, 2);
-		ds18b20_device_search = 0;
-	} else {
-		ds18b20_device_search = 1;
-	}
-
-	os_timer_disarm(&ds18b20_timer);
-
-	// perform a temperature conversion for all sensors and set timer
-	onewire_reset(ds18b20_bus_pin);
-	onewire_write(ds18b20_bus_pin, DS18B20_ROM_SKIP, 0);
-	onewire_write(ds18b20_bus_pin, DS18B20_FUNC_CONVERT, 1);
-	os_timer_setfn(&ds18b20_timer, (os_timer_func_t *)ds18b20_lua_readoutdone, NULL);
-	SWTIMER_REG_CB(ds18b20_lua_readoutdone, SWTIMER_DROP);
-		//The function ds18b20_lua_readoutdone reads the temperature from the sensor(s) after a set amount of time depending on temperature resolution
-	  //MY guess: If this timer manages to get suspended before it fires and the temperature data is time sensitive then resulting data would be invalid and should be discarded
-
-	switch (ds18b20_device_res) {
-		case (9):
-			os_timer_arm(&ds18b20_timer, 95, 0);
-			break;
-		case (10):
-			os_timer_arm(&ds18b20_timer, 190, 0);
-			break;
-		case (11):
-			os_timer_arm(&ds18b20_timer, 380, 0);
-			break;
-		case (12):
-			os_timer_arm(&ds18b20_timer, 760, 0);
-			break;
-	}
-}
-
-static int ds18b20_read_device(uint8_t *ds18b20_device_rom) {
-	lua_State *L = lua_getstate();
-	int16_t ds18b20_raw_temp;
-
-	if (onewire_crc8(ds18b20_device_rom,7) == ds18b20_device_rom[7]) {
-
-		onewire_reset(ds18b20_bus_pin);
-		onewire_select(ds18b20_bus_pin, ds18b20_device_rom);
-		onewire_write(ds18b20_bus_pin, DS18B20_FUNC_POWER_READ, 0);
-
-		if (onewire_read(ds18b20_bus_pin)) ds18b20_device_par = 0;
-		else ds18b20_device_par = 1;
-
-		onewire_reset(ds18b20_bus_pin);
-		onewire_select(ds18b20_bus_pin, ds18b20_device_rom);
-		onewire_write(ds18b20_bus_pin, DS18B20_FUNC_SCRATCH_READ, 0);
-		onewire_read_bytes(ds18b20_bus_pin, ds18b20_device_scratchpad, 9);
-
-		if (onewire_crc8(ds18b20_device_scratchpad,8) == ds18b20_device_scratchpad[8]) {
-
-			lua_rawgeti(L, LUA_REGISTRYINDEX, ds18b20_timer_ref);
-
-			lua_pushinteger(L, ds18b20_device_index);
-
-			lua_pushfstring(L, "%d:%d:%d:%d:%d:%d:%d:%d", ds18b20_device_rom[0], ds18b20_device_rom[1], ds18b20_device_rom[2], ds18b20_device_rom[3], ds18b20_device_rom[4], ds18b20_device_rom[5], ds18b20_device_rom[6], ds18b20_device_rom[7]);
-
-			ds18b20_device_scratchpad_conf = (ds18b20_device_scratchpad[4] >> 5) + 9;
-			ds18b20_raw_temp = ((ds18b20_device_scratchpad[1] << 8) | ds18b20_device_scratchpad[0]);
-			ds18b20_device_scratchpad_temp = (double)ds18b20_raw_temp / 16;
-			ds18b20_device_scratchpad_temp_dec = (ds18b20_raw_temp - (ds18b20_raw_temp / 16 * 16)) * 1000 / 16;
-
-			if (ds18b20_device_scratchpad_conf >= ds18b20_device_res) {
-				ds18b20_device_res = ds18b20_device_scratchpad_conf;
-			}
-
-			lua_pushinteger(L, ds18b20_device_scratchpad_conf);
-			lua_pushnumber(L, ds18b20_device_scratchpad_temp);
-			lua_pushinteger(L, ds18b20_device_scratchpad_temp_dec);
-
-			lua_pushinteger(L, ds18b20_device_par);
-
-			lua_pcall(L, 6, 0, 0);
-
-			ds18b20_device_index++;
-		}
-	}
-}
-
-static int ds18b20_lua_readoutdone(void) {
-
-	lua_State *L = lua_getstate();
-	os_timer_disarm(&ds18b20_timer);
-
-	ds18b20_device_index = 1;
-	// set conversion delay to min and change it after finding the sensor with the highest resolution setting
-	ds18b20_device_res = 9;
-
-	if (ds18b20_device_search) {
-		// iterate through all sensors on the bus and read temperature, resolution and parasitc settings
-		while (onewire_search(ds18b20_bus_pin, ds18b20_device_rom)) {
-			ds18b20_read_device(ds18b20_device_rom);
-		}
-	} else {
-		lua_rawgeti(L, LUA_REGISTRYINDEX, ds18b20_table_ref);
-		uint8_t table_len = lua_objlen(L, -1);
-
-		const char *str[table_len];
-		const char *sep = ":";
-
-		uint8_t string_index = 0;
-
-		lua_pushnil(L);
-		while (lua_next(L, -2)) {
-			str[string_index] = lua_tostring(L, -1);
-			lua_pop(L, 1);
-			string_index++;
-		}
-		lua_pop(L, 1);
-
-		for (uint8_t i = 0; i < string_index; i++) {
-			for (uint8_t j = 0; j < 8; j++) {
-				ds18b20_device_rom[j] = strtoul(str[i], NULL, 16);
-				str[i] = strchr(str[i], *sep);
-				if (str[i] == NULL || *str[i] == '\0') break;
-				str[i]++;
-			}
-			ds18b20_read_device(ds18b20_device_rom);
-		}
-	}
-
-	luaL_unref(L, LUA_REGISTRYINDEX, ds18b20_table_ref);
-	ds18b20_table_ref = LUA_NOREF;
-
-	luaL_unref(L, LUA_REGISTRYINDEX, ds18b20_timer_ref);
-	ds18b20_timer_ref = LUA_NOREF;
-}
-
-static const LUA_REG_TYPE ds18b20_map[] = {
-	{	LSTRKEY( "read" ),				LFUNCVAL(ds18b20_lua_read)		},
-	{	LSTRKEY( "setting" ),			LFUNCVAL(ds18b20_lua_setting)	},
-	{	LSTRKEY( "setup" ),				LFUNCVAL(ds18b20_lua_setup)		},
-	{	LNILKEY, LNILVAL												}
-};
-
-NODEMCU_MODULE(DS18B20, "ds18b20", ds18b20_map, NULL);
diff --git a/docs/modules/ds18b20.md b/docs/modules/ds18b20.md
deleted file mode 100644
index 33effd21..00000000
--- a/docs/modules/ds18b20.md
+++ /dev/null
@@ -1,137 +0,0 @@
-# DS18B20 Module
-| Since  | Origin / Contributor  | Maintainer  | Source  |
-| :----- | :-------------------- | :---------- | :------ |
-| 2017-06-11 | [fetchbot](https://github.com/fetchbot) | [fetchbot](https://github.com/fetchbot) | [ds18b20.c](../../app/modules/ds18b20.c)|
-
-This module provides access to the DS18B20 1-Wire digital thermometer.
-
-## Deprecation Notice
-
-Note that NodeMCU offers both a C module (this one) and [a Lua module for this
-sensor](https://github.com/nodemcu/nodemcu-firmware/tree/dev/lua_modules/ds18b20).
-The C implementation is deprecated and will be removed soon; please transition
-to Lua code.
-
-## ds18b20.read()
-Issues a temperature conversion of all connected sensors on the onewire bus and returns the measurment results after a conversion delay in a callback function.
-The returned measurements can be filtered through the ROM addresses passed as a table or by the family type.
-The callback function gets invoked for every specified sensor.
-
-#### Syntax
-`ds18b20.read(CALLBACK, ROM[, FAMILY_ADDRESS])`
-
-#### Parameters
-- `CALLBACK` callback function executed for each sensor
-	* e.g. `function(INDEX, ROM, RES, TEMP, TEMP_DEC, PAR) print(INDEX, ROM, RES, TEMP, TEMP_DEC, PAR) end`
-- `ROM` table which contains the addresses for the specified sensors, or left empty to perform a onewire bus search for all sensors
-	* e.g. `{"28:FF:FF:FF:FF:FF:FF:FF","28:FF:FF:FF:FF:FF:FF:FF"}`, `{}`
-- `FAMILY_ADDRESS` optional to limit the search for devices to a specific family type
-	* e.g `0x28`
-
-#### Returns
-`nil`
-
-#### Callback function parameters
-- `INDEX` index of the sensor on the bus
-- `ROM` sensors 64-bit lasered rom code
-	* `28:FF:FF:FF:FF:FF:FF:FF` LSB, 8-bit family code, 48-bit serial number, MSB 8-bit crc
-- `RES` temperature resolution
-- `TEMP` temperature
-- `TEMP_DEC` temperature decimals for integer firmware
-- `PAR` sensor parasitic flag
-
-!!! note
-
-	If using float firmware then `temp` is a floating point number. On an integer firmware, the final value has to be concatenated from `temp` and `temp_dec`.
-
-#### Example
-```lua
-local ow_pin = 3
-ds18b20.setup(ow_pin)
-
--- read all sensors and print all measurement results
-ds18b20.read(
-	function(ind,rom,res,temp,tdec,par)
-		print(ind,string.format("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X",string.match(rom,"(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+)")),res,temp,tdec,par)
-	end,{});
-
--- read only sensors with family type 0x28 and print all measurement results
-ds18b20.read(
-	function(ind,rom,res,temp,tdec,par)
-		print(ind,string.format("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X",string.match(rom,"(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+)")),res,temp,tdec,par)
-	end,{},0x28);
-
--- save device roms in a variable
-local addr = {}
-ds18b20.read(
-	function(ind,rom,res,temp,tdec,par)
-		addr[ind] = {string.format("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X",string.match(rom,"(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+)"))}
-	end,{});
-
--- read only sensors listed in the variable addr
-ds18b20.read(
-	function(ind,rom,res,temp,tdec,par)
-		print(ind,string.format("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X",string.match(rom,"(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+)")),res,temp,tdec,par)
-	end,addr);
-
--- print only parasitic sensors
-ds18b20.read(
-	function(ind,rom,res,temp,tdec,par)
-		if (par == 1) then
-			print(ind,string.format("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X",string.match(rom,"(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+)")),res,temp,tdec,par)
-		end
-	end,{});
-
--- print if temperature is greater or less than a defined value
-ds18b20.read(
-	function(ind,rom,res,temp,tdec,par)
-		if (t > 25) then
-			print(ind,string.format("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X",string.match(rom,"(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+)")),res,temp,tdec,par)
-		end
-		if (t < 20) then
-			print(ind,string.format("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X",string.match(rom,"(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+):(%d+)")),res,temp,tdec,par)
-		end
-	end,{});
-```
-
-## ds18b20.setting()
-Configuration of the temperature resolution settings.
-
-#### Syntax
-`ds18b20.setting(ROM, RES)`
-
-#### Parameters
-- `ROM` table which contains the addresses for the specified sensors, or empty for all sensors
-	* e.g. `{"28:FF:FF:FF:FF:FF:FF:FF","28:FF:FF:FF:FF:FF:FF:FF"}`, `{}`
-- `RES` temperature bit resolution
-	* `9` - `12`
-
-#### Returns
-`nil`
-
-#### Example
-```lua
-local ow_pin = 3
-ds18b20.setup(ow_pin)
-
-ds18b20.setting({"28:FF:FF:FF:FF:FF:FF:FF","28:FF:FF:FF:FF:FF:FF:FF"}, 9)
-```
-
-## ds18b20.setup()
-Initializes the onewire bus on the selected pin.
-
-#### Syntax
-`ds18b20.setup(OW_BUS_PIN)`
-
-#### Parameters
-- `OW_BUS_PIN`
-	* `1` - `12`
-
-#### Returns
-`nil`
-
-#### Example
-```lua
-local ow_pin = 3
-ds18b20.setup(ow_pin)
-```
diff --git a/mkdocs.yml b/mkdocs.yml
index 4b2b1f2c..746c8929 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -68,7 +68,6 @@ pages:
     - 'cron': 'modules/cron.md'
     - 'crypto': 'modules/crypto.md'
     - 'dht': 'modules/dht.md'
-    - 'ds18b20': 'modules/ds18b20.md'
     - 'encoder': 'modules/encoder.md'
     - 'enduser setup': 'modules/enduser-setup.md'
     - 'file': 'modules/file.md'