7" TFT w/ RA8875

Other Hardware Displays
23

Hi guys

I'm struggling with similar kind of problem with similar but only 5" I2C-display I bought from same place you bought yours.

http://www.ebay.com/itm/301021183074?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Have you tried it via I2C ? I've found'em (lcd and touch panel) from the bus, addresses are 0x6 and 0x7 but I haven't had any other response yet.

So far I've tried with this kind of code to wake it up:

#include <Wire.h>

#define REG_01 0x01
#define LCD_ADDRESS 0x06 (or 0x07)
#define value1 0x80

void setup()
{
 Wire.begin();
 
 delay(100);
 
 Wire.beginTransmission(LCD_ADDRESS);
 Wire.write(REG_01);
 Wire.endTransmission();
 
 Wire.beginTransmission(LCD_ADDRESS);
 Wire.write(value1);
 Wire.endTransmission();
 
 delay(100);
 
}

void loop()
{    

}

Best Regards

  • TommiP

PS. I removed R1 and changed jumpers like it says it the datasheet "I2C interface: J9, J12, J13, J15 leaves open and J10, J11, J14, J16 leaves short; R1 = 0R, R2 = 10K, R3 = 10K" except R1 is open 'cos another pad was destroyed by too warm soldering iron tip :-[ and I left J15 untouched 'cos I wanted to control backlight by external connection instead of PWM.