My question is tangential to the above discussion - how does the software know how far it is from home to the bed? I can't physically move my limit switch (long story - experimental machine) but when Z is at 0 the tip is a full quarter inch above the bed. I have googled everything I can think of to get the answer but it seems to be one of those magic things that everyone but me just knows. I'mby dougm - General Mendel Topics
I ended up going to Pronterface, which works fine, but it sure would be nice if Pronterface had a tweaking screen :-) Thanks, DougMby dougm - Reprappers
I had a whole weekend free, so I dug deep and got my machine up and running pretty nicely but I'm stumped by one thing - using pronterface I can get the extruder stepper to drive correctly, but ReplicatorG won't drive it. Is there a setting somewhere that I'm missing? The hardware is RAMPS 1.4. the software is sprinter. custom compiled for my home-brew machine. in RepG I am choosing the klimenby dougm - Reprappers
Found it - end-stop pin float. The default configuration turns on the internal pull-ups and sets the ENDSTOPS_INVERTING = false. So oddly the pull-ups must be so weak that they take a while to pull up. In any event changing the ENDSTOPS_INVERTING = true fixes it.by dougm - RAMPS Electronics
I am configuring RAMPS 1.4 with an arduino mega2560 from Ultimachine. In the configuration.h I set the motherboard to 33, turned off SDSupport and changed DISABLE_Z to false. Left everything else unchanged. I compiled successfully, downloaded and was able to connect to and communicate with the board from RepG. I downloaded and installed Pronterface, and am able to connect. The problem is thaby dougm - RAMPS Electronics
Ok, I think I found the code. Having some problems compiling, but thank you for your help.by dougm - RepRap Host
Sorry to have to ask but I'm having a devil of a time finding the right source for the firmware I have a reprap motherboard V1.2 it is running firmware v2.4 So that's the third generation of electronics So I go to and I see the "stable version v1.1" which points to Sourceforge:Home / PIC Firmware / 20060430 which seems kinda old. But that points me to the most recent stable version - reprap-meby dougm - RepRap Host
Hi all, I just finished building a custom machine and one of the differences between my machine and the standard machines is that the Z axis is not on screws - it is on a rack and pinion system. The ReplicatorG software that I'm using disables the stepper driver when the Z axis is not being moved, which unfortunately in my case causes the head to unceremoniously crash into the build platform asby dougm - RepRap Host