Answered All drivers are off by the exact same amount

Have you calibrated the stepper drivers? That is the correct approach normally. The step sizes in the firmware are mathematical and don't vary If you need 100 steps/mm then you need 100 steps. It may not be taking 100 steps (but that is the stepper driver or stepper motor misbehaving, maybe even the RAMPS board itself).

 

The steps are mechanically based and it is not going to vary. Gear ratios and all that ...

 

No.
Those numbers are calculated from the hardware. Except for the extruder steps (which are sort-of bogus) there should be no reason to alter them. You are accounting for an electronic problem in software... not a great idea. But if that is the way you want to go, then you are correct. Problem is that if you alter the firmware for this it is not likely going to stick. Whatever is driving your numbers off (bad stepper driver for example) will likely only get worse.

The eSteps is generally crap because on the R1 series robo seems to have pulled that number out of their pants, but the X, Y and Z steps are correctly calculated for the hardware in the machine.

 

So you need to look at the electrical side and see what is misbehaving. Are all axis out of kilter?

My suspicion is that you are not getting the signal to the stepper correctly. When the firmware calls for (as an example) 100 steps ... it (the stepper) is getting a signal for 90. It really needs 100, but .... only gets told 90. This is not a firmware problem because it asked for 100 steps.

You get what I mean? If you try to fix that in the firmware by having it ask for more steps then if the electronics degrades further you are still not going to be working correctly.

Of all those numbers you posted the only one that is total garbage out of the box is the extruder steps/mm that number is not correct and extruder calibration is a good idea.

 

You can approach it however you want. Tweak the firmware or adjust the stepper drivers (or just replace them outright -- I don't calibrate them either since they are so cheap).

I just want you to understand that those numbers are mechanical and if you change them today you will likely be changing them again at some point because the mechanical bits are not off

 

https://www.amazon.com/Elegoo-Stepstick-Stepper-Printer-Robotics/dp/B01GJJGRF2

Your call.
If you rather calculate and tweak the firmware -- have at it. Just bear in mind that those are not numbers that should change. They are what they are from an engineering stand-point.

If anything is misbehaving it is the electrical side.

However, I always start troubleshooting that from the cheapest parts first

 

The fact you feel all of the axis are off lends me to suspect that the RAMPS board itself might be at fault, but I would start with the drivers. They are so cheap and easy to swap out... if that doesn't solve it then move on to the next most expensive part.

Or play with the firmware Just realize that if you go that route things will likely drift again. Once electronics start to degrade they usually keep going. You are the one who has to fix it so you need to pick which way you would rather go.

 

No.

Yes, exactly

That is the reason I said I suspect something a bit more -- like the RAMPS board itself since it is very unusual for all of the drivers to be exactly the same amount off. You can try jotting down the original firmware settings (or copy and then comment out the original line and just leave your changed one) so that you have a way to roll back if you ever need to. And see what effect you get my tweaking the firmware.

 

I just can't imagine that changing the firmware is a permanent fix for this.
But it might be worth doing until the problem gets worse.

The only way this could be mechanical was if your pulleys or belt were the wrong size (wrong mumber of teeth, etc.) but those are standard GT2 belts and pulleys...same for the steppers, they are all standard ones (likely 200 steps/rev if memory serves)

 

just turn the silver pot (has Philips head slots cut in it) up 1/4 turn on those chips. With the power off. Turn back on and test...does that fix your issue ?

If yes order stepper drivers

If no order stepper drivers and ramps

 

If it changes things at all I'd consider new ones

 

Indeed should be no change at all if good. I agree with @mark tomlinson that there may be a larger problem so I'd suggest buying one of these style kits that has everything in it :

https://www.amazon.com/kuman-Printe...505908980&sr=8-1&keywords=kuman+Ramps+1.4+kit

because then you'll be covered. Shop around for the one you like the best, read the reviews and what not. That is an example not a "buy this one" but it has the arduino, a ramps board, stepper drivers...all the bits under the hood.

If your machine is a R1 your good to go with that kit if its a R1+ then you'll need to follow this guide :
http://community.robo3d.com/index.p...and-rewiring-to-make-generic-ramps-work.8356/

which is easy enough, alot of people have done. Dont waste your money on the robo board kit...its like 80 bucks and the conversion is seriously very easy.

Keep us posted on what you find.