diff --git a/examples/ds18b20.lua b/examples/ds18b20.lua
deleted file mode 100644
index ed728bbc..00000000
--- a/examples/ds18b20.lua
+++ /dev/null
@@ -1,56 +0,0 @@
---'
--- 18b20 one wire example for NODEMCU
--- NODEMCU TEAM
--- LICENCE: http://opensource.org/licenses/MIT
--- Vowstar <vowstar@nodemcu.com>
---' 
-
-pin = 9
-ow.setup(pin)
-count = 0
-repeat
-  count = count + 1
-  addr = ow.reset_search(pin)
-  addr = ow.search(pin)
-  tmr.wdclr()
-until((addr ~= nil) or (count > 100))
-if (addr == nil) then
-  print("No more addresses.")
-else
-  print(addr:byte(1,8))
-  crc = ow.crc8(string.sub(addr,1,7))
-  if (crc == addr:byte(8)) then
-    if ((addr:byte(1) == 0x10) or (addr:byte(1) == 0x28)) then
-      print("Device is a DS18S20 family device.")
-        repeat
-          ow.reset(pin)
-          ow.select(pin, addr)
-          ow.write(pin, 0x44, 1)
-          tmr.delay(1000000)
-          present = ow.reset(pin)
-          ow.select(pin, addr)
-          ow.write(pin,0xBE,1)
-          print("P="..present)  
-          data = nil
-          data = string.char(ow.read(pin))
-          for i = 1, 8 do
-            data = data .. string.char(ow.read(pin))
-          end
-          print(data:byte(1,9))
-          crc = ow.crc8(string.sub(data,1,8))
-          print("CRC="..crc)
-          if (crc == data:byte(9)) then
-             t = (data:byte(1) + data:byte(2) * 256) * 625
-             t1 = t / 10000
-             t2 = t % 10000
-             print("Temperature= "..t1.."."..t2.." Centigrade")
-          end                   
-          tmr.wdclr()
-        until false
-    else
-      print("Device family is not recognized.")
-    end
-  else
-    print("CRC is not valid!")
-  end
-end