Created

Embed URL

HTTPS clone URL

SSH clone URL

You can clone with HTTPS or SSH.

Download Gist

How to display like http://i.imgur.com/35Ikw.jpg

View LCD example code.ino
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
#include <LiquidCrystal.h>
 
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
 
String one = "Target Temp";
String two = "Current Temp";
 
byte degreesf[8] = {
0b11000,
0b11000,
0b00111,
0b00100,
0b00111,
0b00100,
0b00100,
0b00000
};
 
byte degreesc[8] = {
0b11000,
0b11000,
0b00011,
0b00100,
0b00100,
0b00100,
0b00011,
0b00000
};
 
void setup() {
one.toUpperCase();
two.toUpperCase();
 
lcd.createChar(0, degreesf);
lcd.createChar(1, degreesc);
 
lcd.begin(16, 2);
 
lcd.setCursor(0, 0);
lcd.print(one);
lcd.setCursor(15, 0);
lcd.write((uint8_t)0);
 
lcd.setCursor(0, 1);
lcd.print(two);
lcd.setCursor(15, 1);
lcd.write((uint8_t)0);
}
 
void loop() {
lcd.setCursor(13, 0);
lcd.print(72);
 
lcd.setCursor(13, 1);
lcd.print(68);
}
ac30rc commented

sorry to say but this doesn't work at all. i can't see anything in the lcd. no display.

ac30rc commented

i made the following connections:

lcd arduino uno r3
vss gnd(common gnd via breadboard)
vdd +5v(common via breadboard)
vo potentiometer(wiper pin) 10kOhms
rs 12
rw gnd(common via breadboard)
e 11
d0 no connection
d1 no connection
d2 no connection
d3 no connection
d4 5
d5 4
d6 3
d7 2
a +5v(common via breadboard)
k potentiometer(wiper pin) 10kOhms

I did these connections and then uploaded the sketch to arduino, but i get no display at all. I mean i see the lcd showing all the coloums and rows together, but no characters as it should. This is the problem, i can't get it to work. I tried thousands of other ways, then found yours, but even yours couldn't get it working.

What shall i do now ?

ac30rc commented

Hey thanks it worked, i added a resistor to the 15th pin of lcd, rather than direct +5v. now its getting 4.2v and i have a proper display for the 1st time. Thanks bro.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Something went wrong with that request. Please try again.