update docs

docs/LoRA.md

@@ -3,8 +3,12 @@
 ## Characteristic
 * Low Power (Battery Power)
 * Low Bandwidth, Low Speed, Long Range (km)
-* Network
+* Wide Area Network (km range)
+* Bidirectional
+* Open Alliance
+* Security Layer with AES encryption
 
 ## Application
-* Low Frequency data acquicition
-* 
+* Low Frequency data acquisition
+* Leak Detecton
+

docs/MCU.md

@@ -1,10 +1,18 @@
 # Comparison
 
+* Matrix
 
 | MCU        | CPU           | GPIO  | Wireless| Cost |
 | ------------- |:-------------:| -----:|------|------| 
-| Raspberry Pi W      | Quad Core | 36 | WiFi / Bluetooth | S$15 |
-| ESP32_CAM           | Single Core | 36 | WiFi / Bluetooth | S$10 |
-
+| Raspberry Pi W      | 1GHz Single Core | 40 | WiFi / Bluetooth | S$15 |
+| ESP32_CAM           | 160MHz Single Core | 36 | WiFi / Bluetooth | S$10 |
 
+* ESP32-CAM suitability
+  + Low frequency data throughput
+  + Low Power usage
+  
+* Raspberry Pi Zero W
+  + Great for full fledge web server service. Eg. : MQQT broker, File Server
+  + Advanced vision application using OpenCV package
+  + Graphical Terminal display using HDMI