hey me again....
having an issue with the LCD not printing anything
I'm basically running the "hello world" sketch with a IF statement activated by PIR sensor.
I ran it on a bread board with my mega to test then I put the sketch onto a proMini both worked but the proMini printing and all the blocks were noticeable.
I unplugged the power source and plugged back in....now I have no print, I switched back to the mega and still no print. I tried another LCD screen and still no print.
Any Ideas????
/*
LiquidCrystal Library - Hello World
Demonstrates the use a 16x2 LCD display. The LiquidCrystal
library works with all LCD displays that are compatible with the
Hitachi HD44780 driver. There are many of them out there, and you
can usually tell them by the 16-pin interface.
This sketch prints "Hello World!" to the LCD
and shows the time.
The circuit:
* LCD RS pin to digital pin 12
* LCD Enable pin to digital pin 11
* LCD D4 pin to digital pin 5
* LCD D5 pin to digital pin 4
* LCD D6 pin to digital pin 3
* LCD D7 pin to digital pin 2
* LCD R/W pin to ground
* LCD VSS pin to ground
* LCD VCC pin to 5V
* 10K resistor:
* ends to +5V and ground
* wiper to LCD VO pin (pin 3)
Library originally added 18 Apr 2008
by David A. Mellis
library modified 5 Jul 2009
by Limor Fried (http://www.ladyada.net)
example added 9 Jul 2009
by Tom Igoe
modified 22 Nov 2010
by Tom Igoe
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/LiquidCrystal
*/
// include the library code:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup() {
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print("CaseyRaines Band");
}
void loop() {
lcd.setCursor(0, 1);
const int pirPin = (7);
pinMode(pirPin,INPUT);
if
(digitalRead(pirPin)==LOW) {
lcd.print(" ! THANK YOU ! ");
}
else
{
lcd.print(" Hi Take A Card");
}}
The code has no errors.
its for my tip bucket when I play a gig
I'm using a 9v batt
I don't see why the 9v wouldn't work. the mega and uno have a 9v in
it also wont run from USB power either.
I've checked the wiring backwards forward left and right several times.
the only thing different is I'm not using a pot on pin 3 on the LCD
its supposed to be a 10k pot but I was using two resistors as a voltage divider....
I did find the problem. the metal connector on that rail in the mini bread board was missing.
damn I feel dumb sometimes.
Thanks for the help though.
and also when I put the pinMode in the set up it gave me an error code but works fine in the loop so I left it
// include the library code:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
const int pirPin = (7);
void setup() {
pinMode(pirPin,INPUT);
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print("CaseyRaines Band");
}
void loop() {
lcd.setCursor(0, 1);
if
(digitalRead(pirPin)==LOW) {
lcd.print(" ! THANK YOU ! ");
}
else
{
lcd.print(" Hi Take A Card");
}}
ok, fixed it boss
yes. it was a rail in the mini breadboard. it was very loose