Grove Starter Kit for Arduino V3 lcd module won't print

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stevenjamesnewdick
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Grove Starter Kit for Arduino V3 lcd module won't print

Post by stevenjamesnewdick » Wed Dec 09, 2015 3:54 pm

Hi I'm brand new to Arduino and I just Brought a Arduino Uno and the Grove Starter Kit downloaded the library and examples successfully tried a few BUT when I tried the Grove Backlight LCD Module I can't get it to "Print" any text the background changes color but no text :?:

I'm brand new so Have no idea whats going on anyone got an idea please ...
Thanks In advance

RetroBuilder

kavi
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Re: Grove Starter Kit for Arduino V3 lcd module won't print

Post by kavi » Wed Dec 09, 2015 7:16 pm

Hi,

In order to isolate your issue can you please use the following code and send a photograph of the LCD screen output.

Code: Select all

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

rgb_lcd lcd;

void setup() 
{
  lcd.begin(16, 2);

  static uint8_t block[8]= { -1, -1, -1, -1, -1, -1, -1, -1 };
  lcd.createChar(0, block);

  lcd.setCursor(0, 0);
  for (uint8_t i= 0;  i < 16;  ++i)
    lcd.write((uint8_t)0);

  lcd.setCursor(0, 1);
  for (uint8_t i= 0;  i < 16;  ++i)
    lcd.write((uint8_t)0);
}

void loop() {}

Thanks and Regards

stevenjamesnewdick
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Re: Grove Starter Kit for Arduino V3 lcd module won't print

Post by stevenjamesnewdick » Wed Dec 09, 2015 8:23 pm

Thanks for answering Kavi

I ran the code and pretty much nothing happens just the back ground is lit up

kavi
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Re: Grove Starter Kit for Arduino V3 lcd module won't print

Post by kavi » Thu Dec 10, 2015 12:47 pm

Ok,Could you please raise a ticket in the following link http://support.seeedstudio.com/ with the same photo.

Thanks and Regards

kavi
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Re: Grove Starter Kit for Arduino V3 lcd module won't print

Post by kavi » Thu Dec 10, 2015 6:39 pm

Hello,

We can see the base shield switch is not correct. It should be set to 5V when using Grove RGB LCD.

Thanks and Regards

frederic.richez
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Re: Grove Starter Kit for Arduino V3 lcd module won't print

Post by frederic.richez » Sun Dec 27, 2015 7:46 pm

I have exactly the same problem.
I use the grove starter kit for Arduino V3 connected to a UDOO NEO board.
The UDOO NEO require shield powered with 3.3V so I set the grove board power switch to 3.3V.
Backlight is ok but nothing print on the lcd (other modules from the kit are running well).
Should I try to set the switch to 5V without any risk to damage the UDOO board ? If not other idea to solve the problem ?
Many thanks.

kavi
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Re: Grove Starter Kit for Arduino V3 lcd module won't print

Post by kavi » Wed Dec 30, 2015 12:30 pm

We have not tested with UDOO neo board so cant say if it would get damaged.

The grove RGB LCD requires 5V.

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