Cannot modify programming
I am trying to calibrate the steps/mm on my printer. I printed out a ruler and found sizes to be off by about 15% across all 3 axes. When I try to upload modified Marlin file, I get:
Binary sketch size: 96,098 bytes (of a 258,048 byte maximum)
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
I have tried:
different USB cord.
unplugging LCD.
newest version of arduino and 1.06
Any ideas?
From searching online, I have seen mention of adding a bootloader to the ATMEGA 2560, but it seems like everyone else is able to modify the Prusa firmware, so it seems like that is the wrong fix.
Re: Cannot modify programming
Hi Andrew, I have never modified the firmware from standard, and my printer seems to manage OK...
CERTAINLY NOT 15% OUT OF TOLERANCE...
Before you change the firmware, could you create another test piece and try measuring that? say a 20mm cube?
it's possible that the original file is wrongly sized!
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: Cannot modify programming
The bootloader is already installed on the RAMBo; you don't need to install it again.
You don't need to recompile firmware to change the steps. See http://reprap.org/wiki/G-code#M92:_Set_axis_steps_per_unit M92 can be added to start GCode.
And finally, as Joan said, it is exceedingly unlikely that your printer is out be more than 1% (actually less than that), so you either have a model or build issue.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Cannot modify programming
You may need to use the avrdude build provided by Prusa3D.
Re: Cannot modify programming
I am trying to calibrate the steps/mm on my printer.
If steps/mm is the only thing you want to change in the firmware, it might be better (easier) to use M92 gcode command.
Re: Cannot modify programming
Our new firmware guru Pavel is now finalizing a firmware feature to calibrate the extruder steps.
Re: Cannot modify programming
Thank you for all the responses. All my prints were failing. Maybe something clogged. I bought a new bowden tube. I will try to get it together and try these options this week.
Re: Cannot modify programming
Andrew
Which printer do you have?
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…