this is a picture with the repetier firmware
Double check that you have the correct baud rate set.
baud rate for what? to enable the lcd you uncomment the brand reprapdiscount smart controller and it should work or use the reptier firmware configuration tool to build a firmware with it enabled.
Now i see why i don’t use Repeiter firmware. I do not understand that language.
revisaron con si el sistema del datos es de 8 bits o mas
Check that the baud rate in Repetier host matches the baud rate in the Repetier firmware, otherwise you will get garbled out put from the serial monitor.
both baud rates are identical. I can see that being an issue when using a pc to communicate with the electronics but not the electronics to lcd.
You could always try a quick flash with marlin firmware to see if it works, I have the same lcd controller running well with marlin, https://github.com/ErikZalm/Marlin
nope my first post talked about marlin https://plus.google.com/102862083035944525354/posts/TvEAFoMKLU2
Looking more closely, I have the reprapdiscount full graphic controller, as a long shot you could try uncommenting that model, its two more lines down in the firmware. Did you get any errors about the lcd library when compiling?
No errors compiling. I alreadytried that and same result
Did you fix it?
Yes I did I changed my ramps expansion board
@Jim_Squirrel let me tell you what my solution: try isolate GND from printer fram !