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