LCD 2004 Panel Only Showing Blocks

[cpt1nsano]

Thanks, did that already though. Problem is that instead of the display working, the hot bed heater and it's LED start turning on and off in a 0.1 second cycle.

[Mark]

"the hot bed heater and it's LED start turning on and off in a 0.1 second cycle"
Did the hotbed and LED work well when printed with SD card?

[cpt1nsano]

Got it fixed. Compiled my Marlin1.1 code with Arduino 1.6.5 and then uploaded with AVRDUDE from 1.0.1. Everything works fine now. Just wish I could upload direct from 1.6.5 some problem with bootloader mismatches I think. Not going to worry though. Going to upgrade to a Ramps 1.4 anyway. Thanks for the help.

[skysurfer]

Hi together,

i am a guy from Germany and first i must say sorry for my bead englisch.

I bought a Acrylic Geeetech I3 Prusa Pro B with GT2560 Board and have now also the issue with the black showing blocks in the LCD.
At first the display, after assembling the printer, works fine, i could move the axes and so on.
After connection with PC over USB (drivers are installed) and likes to work with the Repetier Host V1.5.6 i got this issue with the blocks after i powered the printer off and on without connected USB Cable.

Can i have the firmware to reburning ?
What is happen after reburning with the configurations values ?
Will this values deleted ?
Have you this values also in a file for uploading to the printer ?

What is Ramps 1.4 ?

Sorry for this many questions.

[Mark]

download the firmware here.
you can refer to the link here to reburn the firmware:
http://www.geeetech.com/forum/viewtopic ... 20&t=16433

[skysurfer]

Hi Mark,

download the firmware here.
you can refer to the link here to reburn the firmware:
http://www.geeetech.com/forum/viewtopic ... 20&t=16433

many thanks for your help.

now i have try it so much to burn the firmware.
By burning with Arduino 1.0.1 i get allways the follow error message:
"avrdude: stk500v2_ReceiveMessage(): timeout"

i have try it wit and without power on from the printer.

I have trie it with 2 PC's and by bouth the same.

I work with Windows 7, one have 32-bit and the other 61-bit Windows 7.

Can it be, that the bootloader from the GT2560 is broken ?
or the USB interface ?

Have you a idea what can be happen, so i can slove this issue ?

[Mark]

How about unplugging all other parts in the board and just with the USB?
I find an article here and maybe it can help you.
http://stackoverflow.com/questions/1964 ... ge-timeout

[ettiennem]

I loaded the firmware attached to this thread to my i3 X with GT2560, now the extruders doesn't work any more. It worked fin until I updated the firmware!

[Abelipokwen]

Hi. skysurfer.. Sorry i bad in english.. your problem look like same with me before.. i buy 3d printed in ebay but it work 2 hour only and show black cell, Can't load firmware arduino.. my board problem is Cristal 16Mhz Stuck not start, i put multimeter set mode Diod or Beep, cable Black GND and Red Cristal Pin in second. now it work..

[skysurfer]

Hi Mark,

How about unplugging all other parts in the board and just with the USB?
I find an article here and maybe it can help you.
http://stackoverflow.com/questions/1964 ... ge-timeout

Many thanks for your help, but the USB was not defect.
The issue was the baudrate
1. from Arduino environment.
I have changed the baudrate by the serial monitor to 9.600 Baud.
After that i could upload your sendet Firmware and it runs perfectly.

But i could not work with Cura or Reptierhost. i got allways a error message about the serial interface.

2. the baudrate from the Firmware.
i changed in the configuration sketch the baudrate from 250.000 to 115.000 and load this firmware up to the printer.

Now, it works perfect.