Pressing Z home button errors

Mctheodoren

hi there, i'm new here, tried t find the answers i needed before posting it but wasn't successfull, so sorry if i'm reposting it!

i bought the parts for a graber i3, built it, used marlin firmware (the latest) but i'm having 2 problems:

when i upload the marlin firmware it keeps getting me some errors but it uploads anyways:

for example: avrdude: verification error, first mismatch at byte 0x276f

even with the error it uploads and then when i use manual movement the axis work fine, but when i press the home button the z axis either freeze or only one of them move and it gets desyncronized!

can anyone help plz!

thanks verry much

Repetier

More a Marlin question/problem then host. Maybe your homing speed is too high causing a stall on one motor.

avrdude is after uploading it compares what got stored and that seems to be wrong. So at least one byte is wrong. No problem until it is a byte in code that gets used. If it is in text are you get just a misspelled output where the error is.