diff --git a/README.md b/README.md
index 2f50b26..9e76a46 100644
--- a/README.md
+++ b/README.md
@@ -4,15 +4,18 @@ Wifi Host for the Arduino-Laser-Spirograph
 #install
 - install arduino ide (1.8.5)
 
-- get and install driver for nodemcu
-  https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
+- follow this instruction
+  https://github.com/esp8266/Arduino#installing-with-boards-manager
 
--  clone/exctract repo to sketchbook
+- clone/exctract repo to sketchbook
+
+- install this libary 
+  https://github.com/plerup/espsoftwareserial
 
 - follow this instruction:
   http://esp8266.github.io/Arduino/versions/2.0.0/doc/filesystem.html#uploading-files-to-file-system
 
-
-
-
+You may also need to:
+- get and install driver for nodemcu
+  https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers