Oops I meant I want to download 1.1.7 !!!!! My mistake. How do I download 1.1.7?by jessicabrenner - General
Or if it can, then please help me figure out how.by jessicabrenner - General
Thanks Viktor, but it can't be downloaded there.by jessicabrenner - General
I want to download 1.2.9 Slic3r version. But I don't see where I can download it. I am not familiar with the command line or compiling software ... so I prefer not to download something which I will have to proess further in order to turn it into an actual application. I would just like to download it and run the program. Is that possible?by jessicabrenner - General
Gotchya, makes sense.by jessicabrenner - General
I see what you are saying. If the printhead had zero mass, then I think it would move to each of the locations corresponding to the 1/256 resolution positions, but practically speaking, it never achieves it. But this relates to my original question. Will the silentstepstick do the 1/256 microstepping? Assuming my printhead was massless, could I get the printhead to go to position 3/256, then 4/5by jessicabrenner - General
Well micro stepping DOES get you more resolution normally, right? But with this "interpolated" microstepping, that is not the case, if i understand correctly. This is the first time I've seen "16/256" so I'm not sure what exactly that means. Why won't real 1/256 micro stepping achieve more resolution? If it moves a smaller amount each step, isn't that more resolution?by jessicabrenner - General
Ok, so are you saying that for one single step, the distance travelled will be the same for the normal a4988 1/16 microstep as the 1/256 interpolated microstep? Or will the distance travelled be much shorter?by jessicabrenner - General
The particular servos I was using recommended 3.7V and stated a range from 3.2 to 4.2V.by jessicabrenner - General
I shortened the wires so that the regulator that changes the voltage from 12V to 4V is very close to the actual servos, instead of far away. Not sure what the diameter or gauge of the wire is. They are just jumper wires I bought on amazon.by jessicabrenner - General
Thanks for the replies. Could be overcomplicated, so if you have other suggestions on how to do this, please let me know! With one custom g-code command entered into pronterface, I want to move the carriage to a specific location, then trigger a USB camera (connected to the same computer the arduino/ramps is connected to) to take a picture as soon as it reaches that location (with preferably noby jessicabrenner - Firmware - mainstream and related support
I want to send commands to my mac's Terminal application (command line) from the Arduino. Does anyone know if its possible to do this directly? Or would I have to send serial data to another application (such as Pronterface) and have that application send the commands to Terminal?by jessicabrenner - Firmware - mainstream and related support
I'm using marlin and RAMPS and would like the arduino to send a command to Pronterface so that Pronterface can launch something in the command line (I'm using Mac OSX). I can figure out how to send serial commands to pronterface, but I'm not sure how I should edit pronterface code to make it send commands to the command line. If anyone has any idea, please chime in! An alternative would be to haby jessicabrenner - Printrun/Pronterface
Finally fixed the problem. It turned out that these servos become unresponsive for 4 seconds when I disconnect then connect power. I realized that the servos were acting as if power was disconnected and connected again (but only if several servos made several moves beforehand, and only if those moves were opposed by the load they were meant to move). So the problem was the long length of wires.by jessicabrenner - General
Thanks for all the suggestions Mutley and CatFarmer, I'll give them a try. I don't have a scope, but I can borrow one or get a cheap one. By "dirty input voltage," would that just look like a DC voltage with lots of ripples? Would just a cap between power and ground fix that? More setup info: the power to all the servos comes from the power supply through one single wire, then splits off to eachby jessicabrenner - General
I have 8 servos using signals from pins 32, 47, 45, 43, 41, 39, 37, 35. The servos are all powered and grounded to an appropriate voltage regulator (can output 2A continuous). Each servo uses 30 mA when stationary, 300 mA when moving, or 600 mA when stalled. I'm using RAMPS 1.4 and Marlin. I'm pretty certain its not an electronics issue, must be software. If I move them one by one using M280, evby jessicabrenner - General
I will purchase the SilentStepStick from Filastruder because I want very extreme microstepping (1/256), but I have read that the arduino mega 2560 may be too slow to do 1/256 microstepping. But I've also read that the Silent StepStick uses 1/16 microstepping, and uses interpolation to achieve the 1/256. Does using interpolation somehow allow the arduino to have no problems performing the 1/256 fuby jessicabrenner - General
For those who have used it, does autospeed make the volumetric speed constant throughout the entire time it is printing? Or does it only set a maximum volumetric speed that is sometimes not reached (aside from acceleration)?by jessicabrenner - Ormerod
This might be helpful: [3digitalcooks.com]by jessicabrenner - Firmware - mainstream and related support
madmike8, I'd like to be able to initiate the cleaning at any point during the print. rcjoseb, that will work for the plastic extruder, but I'm using a pressure-based paste extruder (no retraction). The paste gets stuck on the sides of the needle tip sometimes and causes smearing issues. Ideally I could just types something like M9999 and hit enter, rather than type a whole bunch of Gcode. Whatby jessicabrenner - Smart_Rap
I'd like to move the printhead to a specific "cleaning" location behind the stage of my custom printhead, then activate a servo that will clean the needle tip of my paste extruder. I want to make a custom M-code that will do this. I'm using Marlin on Ramps 1.4. If I use plan_buffer_line to move the printhead to the cleaning location, then use the servo.write command, will Marlin wait for the movby jessicabrenner - Smart_Rap
Thanks for the reply. Yes, its a multiple concurrent extruder setup, but the 3rd extruder is a luer tip needle with a 1mm diameter. To do paste dispensing at a constant PSI, I force the printer to stay at a near constant speed. When I put 1mm nozzle diameter in slic3r, I think it automatically chooses different extrusion widths for the infill, the perimeters, the external perimeter, top solid infby jessicabrenner - General
I want constant extrusion widths for each extruder I have - 0.4 nozzle (for PLA), 0.4 nozzle (for PLA), and 1.0 needle tip for a paste extruder. I can let the PLA nozzle widths go to default, but how do I set a constant width for the paste extruder that is a different width than the 0.4 mm nozzles?by jessicabrenner - General
I'll give the measuring of the tube OD a try. But I don't think thats the problem since the tube is relatively stiff and I'd expect it to relax quickly (rather than over several seconds) once the pressure is removed, but ya never know. In a separate test, I'll put the peanut butter in a closed syringe (with no air bubbles) and apply very high pressure, and see if the peanut butter is actually comby jessicabrenner - General
Pastes can't be that compressible to cause it to ooze for 10 seconds would it? I guess removing the solenoid, and keeping the pressure constantly on the paste, and adding an electrically controllable valve near the tip of the long tube could be a solution. But I'd still like to understand why oozing occurs with long tubing, and if it can be fixed without using some kind of retraction.by jessicabrenner - General
I've been trying to build a pressure-based paste extruder and would like to understand why longer tubing from a remote syringe barrel results in longer duration of oozing. The paste extruder works great when extruding directly out of the syringe. Since the syringe is large, I'd rather mount it off of the printhead, and have tubing go from the syringe all the way to the printhead, kind of likeby jessicabrenner - General
Did you ever find out how to make your own custom gcode in the marlin firmware? I tried adding a case for M77 in Marlin_Main to communicate with a device on the I2C, but its not working.by jessicabrenner - Firmware - experimental, borrowed, and future
I notice that when I enter gcode into pronterface, it takes some time for the code to actually execute if I'm in the middle of a print. Is there a way to make it execute it immediately? If I have to edit the marlin firmware, I'm ok with that, but I'm hoping there's a simpler way. Maybe I can just decrease the # of lines that get stored in some buffer somehow. Any ideas?by jessicabrenner - General
I've never seen a printer with chains and sprockets. They mostly use belts and pulleys. Is this a cost thing, or do chains have any performance issues like wear or backlash?by jessicabrenner - General