I did, I swapped the drivers all around but evidently having at least one bad one plugged in would make the others not work. I was just switching them around, and plugging the unused one in the E1 slot, "for safe-keeping" I thought. I got a bunch of replacement ramps and arduinos, but only had 2 sets of drivers. Mixing and matching the good ones together and pulling out and trashing all the bad oby chz420 - RAMPS Electronics
Okay, after getting those readings I ditched the 3 wonky drivers, and went ahead and tested them all one by one. Out of 10 drivers 4 were bad. I found a configuration of ramps/arduino/drivers that gave me 12.60V across all 4 pins, for all 4 relevant drivers (X, Y, Z, E0), however, I couldn't connect this arduino to the computer. I unplugged the ramps from it, and it connects. I figured that wasby chz420 - RAMPS Electronics
Okay, I swapped the jumpers from the Y to the Z, no change. I went around testing each individual pin for each axis, with Vcc and usb connected. I attached a pretty sweet table I made in paint with my findings. It seems that no matter what I change the Vref to, my pins stay constant.by chz420 - RAMPS Electronics
Okay, my multimeter leads have screw on caps around the probes, so it was super easy to just unscrew them, stick a small wire with a crimp connector on the other end in, and just screw the cap back on. So, sticking the ground on a GND pin and just going around probing all the 5v pins, I was reading 4.95V on all of them, except for the "servo" section, 0.00 on all of them, but I think they are intby chz420 - RAMPS Electronics
I have it mounted directly to the acrylic frame. The pins are contacting the acrylic, I was told that was fine. I took a multimeter to my PSU leads and I'm getting exactly 12.30V across the board. Probably one of the most consistent PSUs I've ever tested. What else can I possibly do? I'm totally at a loss.by chz420 - RAMPS Electronics
Yeah I've been using the Arduino IDE to flash all the firmwares I've been trying. The ramps are about $5 a piece. About $25 for the ramps + arduino, and 21 days shipping from china. I don't have another PSU to test with. Unless I can rig one up from my lounging couches or something, lol. The first firmware I tried was this, which was from the kit sellers' instructions drive. I tried the marlinby chz420 - RAMPS Electronics
I've tried 3 different cables with no success. I've tried different ports both regular and USB 3.0. Funnily enough, I built a new PC between attempts and I had this problem on both motherboards. My USB driver is the "VIA USB eXtensible Host Controller." I have only one COM port in the device manager (COM1) which just reads "communications port," but when I plug in the Arduino it comes up as COM4,by chz420 - RAMPS Electronics
So I modified the pins.h to use the extra extruder (E1) pins for the Z instead. #define Z_STEP_PIN 36 #define Z_DIR_PIN 34 #define Z_ENABLE_PIN 30 #define Z_MIN_PIN 18 #define Z_MAX_PIN 19 #define Z2_STEP_PIN 36 #define Z2_DIR_PIN 34 #define Z2_ENABLE_PIN 30 I then plugged one Z motor into the E1 pins just to test, andby chz420 - RAMPS Electronics
The default values are here #define HOMING_FEEDRATE {50*60, 50*60, 50, 0} #define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,3860,90} #define DEFAULT_MAX_FEEDRATE {250, 250, 2, 22} #define DEFAULT_MAX_ACCELERATION {1000,1000,5,1000} and I changed it to #define HOMING_FEEDRATE {50*60, 50*60, 50*60, 0} #define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,80,90} #define DEFAULT_MAX_FEby chz420 - RAMPS Electronics
No, I can't move the axis after pressing the endstop, it just causes the software to unfreeze. Im using Repetier-Host and it will show the status as "n Commands Waiting" where n just stacks up the more commands I try to issue after trying to home the Z. I thought if I could trick the software into thinking the Z was homed that I would be able to move it freely up and down. I still could not. Iby chz420 - RAMPS Electronics
My repetier-host is set to home all three axes to min, and the printer will home the X and Y flawlessly, and completely freeze when I ask it to home the Z. I can trick the software into unfreezing by just manually pressing and holding the Z endstop, the text goes solid black 0.00, and I am free to add +50 or whatever, but its not useful as the motors still wont turn. My LCD acts strangely too,by chz420 - RAMPS Electronics
Thanks for your suggestion. I made the small change in the firmware to disable the max endstops, and running M119 gives me the result I expect, only showing "triggered" when I press the endstops manually. I have also tried swapping out to a spare endstop for the Z. Is it actually possible for me to have received 3 broken boards in a row? That are specifically broken in moving the Z axis? The onby chz420 - RAMPS Electronics
Thanks for the reply, I flashed the firmware you linked and, aside from the axes homing in the wrong direction now, there's no change. My Z still wont respond. "n Commands Waiting"by chz420 - RAMPS Electronics
Im using the Folger Tech Prusa i3 acrylic kit. It uses an arduino mega 2560 and RAMPS 1.4 shield. Ive been going back and forth through email for the past couple weeks (months) with their tech support trying to figure this out. Ive so far received 2 replacement megas, 3 RAMPS, and an additional set of stepper drivers. So in total I have 3 arduinos, 4 RAMPS shields, and 2 sets of stepper drivers,by chz420 - RAMPS Electronics