LiquidCrystal yields no output

Firmware Libraries
1

I’m struggling to send text to my 1602 16x2 LCD screen from the photon dev board. I’ve been all over this forum checking the old posts and giving each suggestion a try.

I’ve got: (Left is LCD, right is photon)
RS = D0
Enable = D1
Pin D4 = D2
Pin D5 = D3
Pin D6 = D4
Pin D7 = D5

20151109_005357.jpg2048×1152 602 KB 

#include "application.h"
#include "LiquidCrystal/LiquidCrystal.h"

// Make sure to update these to match how you've wired your pins.
// pinout on LCD [RS, EN, D4, D5, D6, D7];
// pin nums LCD  [ 4,  6, 11, 12, 13, 14];
// Shield Shield [RS, EN, D4, D5, D6, D7];
// Spark Core    [D3, D5, D2, D4, D7, D8];
LiquidCrystal lcd(D0, D1, D2, D3, D4, D5);

void setup() {
  // set up the LCD's number of columns and rows: 
  lcd.begin(16,2);
  // Print a message to the LCD.
  lcd.print("Hello, Sparky!");
}

void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  // print the number of seconds since reset:
  lcd.print(millis()/1000);

/* Comment begin lcd.setCursor(0, 1);
  lcd.print("Step 1");
  lcd.setCursor(0, 1);
  lcd.print("Initialize");
  
  delayMicroseconds(3000);
  
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Step 2");
  lcd.setCursor(0, 1);
  lcd.print("Print text");
  
  delayMicroseconds(3000);
  
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Step 3");
  lcd.setCursor(0, 1);
  lcd.print("Setup Complete");*/ Commented out for the moment

}
2

Hi @Mulambev,

Did you found a workaround ?

I have exactly the same problem.
Actually i’m using this LCD Keypad shield : http://www.dx.com/p/lcd-keypad-shield-for-arduino-duemilanove-lcd-1602-118059#.VrabHBjfDAo

Thanks in advance for your reply.

Antaris

3

I have a library “port” Arduino_KeyPadLCD_Shield for this shield on the Web IDE. It uses the pin mapping as it would be used by the Particle Shield shield.
Give it a try.