updated readme

README.md

@@ -2,4 +2,13 @@
 It is custom FW, so you need to erase the STM32 chip first [Erase Factory AT Firmware](https://wiki.seeedstudio.com/LoRa_E5_mini/#21-erase-factory-at-firmware), you may need to retrieve and save the Device EUI before erasing of the Factory AT Firmware before we program with SDK
 
 ## Sensors for this custom build
+1. SHT40 for humidity and temperature over I2C2 
+2. ZE27-O3 Ozone sensor over USART2
+3. SN-GCJA5 PM sensr over I2C2 
 
+# Whole PRJ is ready to compile in CubeIDE
+*LoRa-E5_weather_and_pollution.ioc* is configuration file for CubeMX
+*decoder.js* - is decoder for payload for datacake - just copy this JS code into decoder section
+
+# It is sending the payload over LoRaWAN appx. every 2.5 mins
+Usually it takes up to 10 min. to react on downlink command (depend of communication stability)