Merge branch 'master' of https://gitlab.com/I237-2016/skeleton

doc/arduino-mega-lcd1602-keypad-shield-wiring.markdown

@@ -10,9 +10,21 @@ This shield consists of three logical parts:
 
 <div class=pagebreak></div>
 
+## Connection to Arduino Mega
+
+Following illustration shows how shield is connected to Arduino mega board.
+
+![arduino-mega-lcd1602-keypad-shield-placement.png](arduino-mega-lcd1602-keypad-shield-placement.png)
+
+Image source: [sainsmart.com](http://www.sainsmart.com/media/catalog/product/2/_/2_16_6.jpg)
+
+Additional installation details and tutorials can be found with help of keywords [Arduino 1602 lcd keypad shield tutorial](https://www.google.ee/webhp?q=Arduino+1602+lcd+keypad+shield+tutorial).
+
+<div class=pagebreak></div>
+
 ## Wiring illustration
 
-![Arduino Mega LCD1602 Keypad shield wiring LCD part.png](Arduino-Mega-LCD1602-keypad-shield-wiring.png)
+![arduino-mega-lcd1602-keypad-shield-wiring.png](arduino-mega-lcd1602-keypad-shield-wiring.png)
 
 Author: [Lauri Võsandi](http://lauri.võsandi.com/arduino/lcd1602-key-shield.html#hd44780)
 

doc/arduino-mega-usb-uart-wiring.markdown

@@ -6,12 +6,12 @@ This wiring schema uses only Tx from Arduino and is suitable to be used as stand
 
 ## Wiring illustration
 
-![Arduino Mega USB UART wiring.png](Arduino-Mega-USB-UART-wiring.png)
+![arduino-mega-usb-uart-wiring.png](arduino-mega-usb-uart-wiring.png)
 
 ## Wiring table
 
 | Signal | ATMega2560 port and pin | Arduino Mega 2560 pin | USB UART converter pin |
 | --- | --- | --- | --- |
 | Ground (GND) | GND | GND | GND |
-| Transmit data  from Arduino (TxD) | PORTJ pin 1 (TXD3) | Digital pin 14 (TX3) | TxD |
+| Transmit data  from Arduino (TxD) | PORTJ pin 1 (TXD3) | Digital pin 14 (TX3) | RxD |