Gravity: 1602 LCD Keypad Shield

FAQ

• Why my LCD keypad cannot display anything on the Intel Edison while all right on Romeo?

  It works well if uploaded by Arduino 1.5.3 version, however, the latest 1.6.* have discard pin Definition for Edison. So you have to add pinMode(); into the setup() like this:

  void setup() {

  for(int i=4;i<10;i++){

  pinMode(i,OUTPUT);

  } lcd.begin(16, 2); // set up the LCD's number of columns and rows

  }

  

• I do not understand your schematic. There are too many connectors illustrated than are actually on the shield. Could you show me a mapping?

  The J1-J8 include the both the user interface, i.e. Analog pins, APC220(Serial) pins, Digital pins, and the pins connected with the lower Arduino card, e.g. Uno/ Leonardo. Here is a simple mapping picture.

• I do not understand your schematic. There are too many connectors illustrated than are actually on the shield. Could you show me a mapping?
  The J1-J8 include the both the user interface, i.e. Analog pins, APC220(Serial) pins, Digital pins, and the pins connected with the lower Arduino card, e.g. Uno/ Leonardo.

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