kievari
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Hi,
I've got this very famous LCD:
SparkFun Electronics - Color LCD 128x128 Nokia Knock-Off
As one could see, the pinout on that page and all other documentation is prescribed:
The mystery came from China! This LCD I've got is a copy, and has signs of being different with pinout.
On Chinese LCD, pinout is backward numbered, i.e. pin 1 is 10, 2 is 9, etc. but this is only numbering!
Connecting the 10th pin to VCC for BL and 9th go GND gives no result, which must give, as according to documentations all around about this LCD online, they are VCC and GND of BL. At the same time, connecting 1st pin (the VCC of logic on documentations) and 2nd (must be RESET), turns the back light on, that is behaves as if "only the numbering is backward written but the functions are based on original documentations".
To prove this idea, I connected pins as written in documentations and run codes of all existing tutorials. Nothing works!
1. if this pinout is nonstandard, well, then how Chinese are claiming that this LCD is to repair Nokia 6100, 6610, etc. LCDs? Could we beleive that "all" Chinese sellers on Ebay are giving wrong info? No, in my opinion. Then why the LCD didn't work with any tutorial I've tried in some 3 days?
2. if the LCD is to work as the original Nokia, why then 3.3v turns back light on, and going to 5v make it more pale instead of making it lighter? This tells us about the voltage booster? Who knows please?
3. could anybody help me advance out of this problem point please?
I've got this very famous LCD:
SparkFun Electronics - Color LCD 128x128 Nokia Knock-Off
As one could see, the pinout on that page and all other documentation is prescribed:
Code:
1. VCC-Digital (3.3V)
2. RESET
3. SDATA
4. SCK
5. CS
6. VCC-Display (3.3V)
7. N/C
8. GND
9. LED GND
10. LED V+ (6-7V)The mystery came from China! This LCD I've got is a copy, and has signs of being different with pinout.
On Chinese LCD, pinout is backward numbered, i.e. pin 1 is 10, 2 is 9, etc. but this is only numbering!
Connecting the 10th pin to VCC for BL and 9th go GND gives no result, which must give, as according to documentations all around about this LCD online, they are VCC and GND of BL. At the same time, connecting 1st pin (the VCC of logic on documentations) and 2nd (must be RESET), turns the back light on, that is behaves as if "only the numbering is backward written but the functions are based on original documentations".
To prove this idea, I connected pins as written in documentations and run codes of all existing tutorials. Nothing works!
1. if this pinout is nonstandard, well, then how Chinese are claiming that this LCD is to repair Nokia 6100, 6610, etc. LCDs? Could we beleive that "all" Chinese sellers on Ebay are giving wrong info? No, in my opinion. Then why the LCD didn't work with any tutorial I've tried in some 3 days?
2. if the LCD is to work as the original Nokia, why then 3.3v turns back light on, and going to 5v make it more pale instead of making it lighter? This tells us about the voltage booster? Who knows please?
3. could anybody help me advance out of this problem point please?
Last edited: