seeed-studio / grove_lcd_rgb_backlight Goto Github PK

Hello,
is it possible to make work this library with the esp8266.

and in general is it possible to make work the grove module with the esp8266.
(evoluate module not the analogique and numerique who already work)

thanks a lot

Hi,

I'm surprised not to see a noBacklight() function. It will be nice to have this feature.

regards,

Jim

Please help, whenever I try to compile my code, it says fatal error, rgb_lcd.h: no such file or directory

Writing to the display quickly, multiple times, causes the screen to render very lightly, as it continuously updates. Is there a best practices for writing to the display in a more stable manner? I am using the display to show the pitch, yaw, and roll of a IMU.

While testing the CustomCharacter.ino example, there is an extra pixel that appears above the left eye of the smiley, whatever the changes I have tried to make. (see attached picture just below)

I just cannot understand why, since the definition for that character is the following:

byte smiley[8] = {
    0b00000,
    0b00000,
    0b01010,
    0b00000,
    0b00000,
    0b10001,
    0b01110,
    0b00000
};

Could you explain why this happens and, hopefully, give some way to remove this extra pixel?

example scripts like 'hello world' run on my other devices but not when paired with the arduino uno r4 wifi. no power going to the lcd rgb backlight display by grove. i believe the pin connections are different see https://docs.arduino.cc/tutorials/uno-r4-minima/shield-guide see sda scl locations

When I connect the display to Grove Shield V2 and run any one of the examples the display briefly shows output from example then switches to fading between various RBG colors and text values of those RGB colors.

Is this a faulty unit?

I have already returned one Grove LDC RGB Backlight, because I thought it was faulty. Now I realised that if I use the library via the Arduino IDE's library manager and install it from there (1.0.0), then the backlight does not work on my v5.0 hardware.

If I download the main branch from here as a ZIP and install that, the light turns on properly.

The examples do not work properly. Color of the display can be set, but text does not appear.
When setting up the display as one row, the text is being displayed:
lcd.begin(16, 1);
But then only one row is usable and the contrast of the displayed text is very low.

Hey

i cannot make that simple hello world file to work,,

#include <Wire.h>
#include "rgb_lcd.h"

rgb_lcd lcd;

const int colorR = 255;
const int colorG = 0;
const int colorB = 0;

void setup() {
    // set up the LCD's number of columns and rows:
    lcd.begin(16, 2);

    lcd.setRGB(colorR, colorG, colorB);

    // Print a message to the LCD.
    lcd.print("hello, world!");

    delay(1000);
}

void loop() {
    // set the cursor to column 0, line 1
    // (note: line 1 is the second row, since counting begins with 0):
    lcd.setCursor(0, 1);
    // print the number of seconds since reset:
    lcd.print(millis() / 1000);

    delay(100);
}

I got a lot of bugs when compiling the example code "HelloWorld".

Actually it seems the original code is such a mess. Bugs says "Undefined reference to xxx", I couldn't deal with it even after looked at the header file code.

If it is my fault, I will cancel this issue.

While testing the SerialDisplay.ino example, after any string I would send to the display through the serial monitor, some extra character is added at the end (see picture attached right below).

By the way, if I upload the CustomCharacter.ino example beforehand, this extra character appears to be exactly the same one as the frownie character, if that can help. My guess is that this extra character comes from some memory space at a specific address of the Arduino card.
Can you help on how to remove this extra character from the LCD display?

Is it possible to add this API? Unfortunately setReg is private, but I think it would be something like:

void lcd_backlight_off() {
  lcd.setReg(0x07, 0x0);
  lcd.setReg(0x06, 0x0);
}

void lcd_backlight_on() {
  lcd.setReg(0x07, 0x0);
  lcd.setReg(0x06, 0xff); 
}