Update README.md

README.md

@@ -4,6 +4,12 @@ Simple custom firmware for KTNNKG wifi 30A module.
 
 Connects as client to the provided wifi hotspot (must be IEEE802.11 b/g/n (2.4MHz)) with a hardcoded ip address.
 
+Simple - does not need extra servers or smartphone app.
+
+Not secure.
+
+Code pieces are taken from here and there while looking through ESP8266 programming guides and tutorias.
+
 ## hardware setup
 
 * WIFI module is marked as PSF-B01
@@ -12,7 +18,7 @@ Connects as client to the provided wifi hotspot (must be IEEE802.11 b/g/n (2.4MH
 * Programming cable - [this one](https://www.amazon.com/gp/product/B07784SHF7/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1) with 3.3V used for VCC
 
 ## build and upload
-Arduino 1.8.9:
+Arduino 1.8.9 (download libs for ESP32):
 * Board: **Generic ESP8285 Module**
 * Upload speed: **921600**
 * CPU frequency: **80 MHz**