Hey guys,
i bought a 16x2 LCD but i cant get it to work. (link to product page)
i have no datasheet/model name, and no potmeter (instead i hooked VO to ground). i am using the LiquidCrystal libary in 4bit mode.
at the back of my lcd i can read some model numbers: [1602A] , [JGD1602A] , [QCPASS] (dont know if anyone else can find his datasheet, but i cant)
problem: (using the LiquidCrystal libary)
1 - lcd.setCursor causes a blank screen (whereever i place this command and with whatever arguments filled in -> lcd.setCursor(0,0) always result in blank screen even if i use any prints)
2 - with hello world example of arduino LCD example (these i mean) ..with the lcd.setCursor(0, 1) line excluded (removed),
my display shows the 1st row all black (LCD = 5x8 dots x16chars x 2 rows) and second row is all blank (removing the lcd.print() line in the loop dit not solve this..)
These are my connections from LCD:
1 vss - gnd
2 vcc - 5v+
3 vo - gnd
4 rs - D12 (arduino)
5 R/W - gnd
6 E - D11 (arduino)
7 data 0 -
8 data 1 -
9 data 2 -
10 data 3 -
11 data 4 - D5 (arduino)
12 data 5 - D4 (arduino)
13 data 6 - D3 (arduino)
14 data 7 - D2 (arduino)
15 A - 5v+ Through 220 Ohms
16 K - gnd
PS: furthere more i have nothing else connected to my lcd nor my arduino & Picture at product page is incorrect!
if sombody have any great ideas i appriciate it alot! (i am working on this now for more than a week!)
Nick