Thank You for answer. I have 1.7A motors and stepper driver that i burned (a4982) can handle up to 2A according to doc. My mistake. Anyway from which current I should use heat sink on stepper drivers ? Maybe he can handle up to 2A but he needs heat sink above X amount of current ?by asrt - Stepper Motors, Servo Motors, DC Motors
Good morning. I recently burn one of my stepper driver and I want to make sure that my calculations are correct. a4982, a4988, a5984 stepper drivers have the same equation to calculate max current with VREF pin: ItripMAX = VREF / (8×RS) Questions: One stepper driver have 2 bridges with RS = 0.05ohm for each, so i supose put in equation 0.05 or 0.1 ohm ? Stepper motor can handle 2A of current, tby asrt - Stepper Motors, Servo Motors, DC Motors
Hello. I have issue with seam on my prints. I use slic3r 1.2.9 (tried with 1.3 - same issues occurs). There is gap before nozzle finish perimeter. I have delta printer. Retraction is high (15mm), slicer settings attached. Anyone can give me an hint what to tweak ?by asrt - Printing
Now I have problem with homing all (G28 command). Its way to fast than maximum feedrate 200mm/s (12000mm/min). So when I manually go from Z0 to Z307 (G1Z307F12000) everything works fine. But when I type G28 then speed is much faster, and sometimes one motor stall. I almost destroy my effector because it went too far from center while G28 Is there any way to adjust max homing speed ? ---edit---by asrt - Delta Machines
Thanks for quick response. I found line in ultralcd.h #define LCD_UPDATE_INTERVAL 100 and changed to 5000 ms (5s). I also: - left only jumpers at MS3 pinouts (1/16 micro-stepping). - recalculate steps/mm - changed max feedrate to 200.00 Manual movements G1 with F12000 seams to work fine.by asrt - Delta Machines
Hello. I finished building my first delta printer. I have problems with proper calibration (jerk, acceleration, speed). Printer can print with acceleration = 20000 and jerk = 60 (I haven't checked higher values). But when DEFAULT_MAX_FEEDRATE is higher than 65mm/s effector randomly starts to slows down and stalling, but motors don't lose any step (there is no layer shifting). Movie while printiby asrt - Delta Machines
Hi. I need help with electronics for delta printer that includes: - 24v nema 17 engines (400 steps) - DRV8825 (1/32 microstep) - 24V heatbed - 24V hotend I plan to modify Ramps 1.4 (unsolder D1 diode, change fusses) and plug in 24V 15A power supply. Power on arduino with usb cable. My question: Is there any modifications that i need to do with ramps 1.4 to use 24V power supply ? Can I use Arduby asrt - RAMPS Electronics
I want to calibrate my settings in Slic3r. Is there any method that allows me to change temp. or flow rate after print x mm height (something like "Tweak at Z" in Cura) ?by asrt - General
Problem occurred by "Z Autodisable" in Teacup Firmware. When I unchecked this flag offset at every layer dissapear. Thank all of You for your time.by asrt - General
I tried to print 2 objects in basic size. I'm surprised even more - it works. Both objects don't has any offset. But multiplying objects to get bigger working area is not solution. Any idea why something like this is happening ?by asrt - General
In object that was scaled up to 200% federates looks different: SENT: N2436 G1 Z11.200 F600.000*51 RECV: ok SENT: M105 RECV: T:185.50/190.0 RECV: ok SENT: N2437 G1 X107.250 Y57.767 F600.000*96 RECV: ok SENT: N2438 G1 X107.250 Y97.510 E2.73728 F300.000*36 RECV: ok Maybe hardware is ok but teacup configuration is wrong, so hardware cant handling federate only in some cases ? If anyone have enougby asrt - General
My stepper motor are: 3x Japan Servo KH56JM2U083 1x Japan Servo KH42HM2R032 Strange. Stepper drivers should be more overheated with bigger objects (they sends power at longer period of time to move longer distances). Also engines should jammed more often while printing bigger objects (the are longer turned on to move longer distances) When I scale up to 200% same object it's prints well throughby asrt - General
Hardware: 3x 2A stepper motors for x/y/z 1x 1A stepper motor for e CNC shield Arduino uno Software: Pronterface Teacup firmware Issue: When I'm trying to print calibration object with thin wall my printer loses one step in x/y axes - always in the same position (marked) Which have been done: - Maximum federate in tacup calibrated (at F17000 X/Y motors starts to jam, so i put 10000 in teacup cby asrt - General
Thank you all. Problem was trivial. In slicer (Printer Settings->General->Firmware->G-code flavor) I had enabled RepRap instead of Teacup If anyone will have same problem, good idea is to check this option before reassemble printerby asrt - General
Now I'm trying manually get what is the problem before next print. I set Acceleration to Ramping and Maximum Jerk I have problem to interpret difference between G0 and G1 When i hit: G91 G0 Y10.0 F3 G90 Then it is fast move from 0 to 10mm When i type: G91 G1 Y10.0 F3 G90 Then printer move Y plate really slow (but also accurate) Can any body tell me what parameter is added (or multiply) toby asrt - General
I tried 40 mm/s as you said, even with 3mm/s - with no better result. My acceleration in teacup is turned off for now.by asrt - General
also tried lower and higher values, with the same result.by asrt - General
I adjust motor currents, reduce some extruder disable acceleration in teacup firmware. Strange thing is that printer stops for a few seconds before layer change, and then move outside of the previous one. Every layer has the same dimensions, but they are moved.by asrt - General
Hello again I finally finished my first 3d printer (by the way thanks for yours help ) Another problem that occurs is offset after every single layer prints: My steeper drivers are cold, so its not because of overheating. Calibration is ok, when I manually checks everything works just fine. I use Pronterface and Slic3r. Please help me to solve this (hopefully) last problem.by asrt - General
I didn't knew how "home all axes" works (moves till end stops reach). I don't have end stops jet, so I just remove G28 from slic3r and everything works perfectly fine. I just need to remember to moves them manually to 0,0,0 before starts printing. Thanks a lot ;Dby asrt - General
Hi. Finally the printer is assembled. I used old DVD drives and arduino uno with CNC shield. Build dimensions equals 39mm in all directions, offset and home position equals 0mm. I think that printer is calibrated because when I move hotend 10mm it moves exactly 10mm each time I tries. Problem is when I hit home button (for example Y button marked below) Or when i tries to print something (slicby asrt - General
Thanks guys. I'll do as you said and post the result.by asrt - General
thing that melted is a wire. current draw equals 2.48 A, unfortunately i don't have information about my breadboard rated to carry. The circuit itself looks ok ?by asrt - General
I'm trying to build heater circuit using RAMPS schema, and almost everything works Temp. rises when i enable heater(led lights up), drops when i disable it, or reach declared temp. (led goes out). But i have problem with melting parts on circuit board Under transistor IRLZ34N marked with red arrows. Could you check my circuit board, and help me find solution ?by asrt - General
Thank You guys for help. I change AIO3 to AIO5 - temp was 0, if i pull out cable from A5 then temp rises to ~2000C. I buy another 100k thermistor and replace it, but still arduino acts the same. I tried with different resistors. Finally I change beta and R2 to right value it works just fine: In room temp. value: SENT: M105 RECV: T:28.50/0.0 RECV: ok In hand temp. value: SENT: M105 RECV: T:28by asrt - General
I try to see what arduino sees on Analog pins. I uploaded code: void setup() { Serial.begin(115200); } void loop() { int val; val=analogRead(0); //Read the analog port 0<- this value was modified in range [0-5] Serial.println(val); delay(1000); } I checked values from all pins, holded thermistor in hand for few seconds, and putted him away for a while. In room temp was 27Cby asrt - General
I put thermistor and thermometer to hole inside hot-end. Heated it to 180C and measure the resistance on both ends of thermistor. I configure my teacup like on screen at first post (AIO3), from drop-down menu I can chose AIO1,AIO2 and AIO3. I don't see any AIO3 on my arduino, so I'm guessing its Analog in pin A3. Is it correct ? Unplugging thermistor causes drop temp. to 131C Unplugging A3 cabby asrt - General
Thank You for quick response. I made some changes: But still without result. Repetier Host points to 0C temp. Pronterface shows 133Cby asrt - General
Hi. This is my first 3d printer, also my first post so forgive me if I'm writing in wrong place. I have Arduino UNO atmega328p with TeaCup on the board. I can't deal with temp reading from my NTC thermistor 100k ohm. Thermistor works fine (I checked resistance while heating him). Also calculate beta: 3497 I don't have any module to get temp values, so i build one basing on NanoHeart sensor Mby asrt - General