key point in above post here again deltas are still experimental except for firmware provided by the vendor. if you use the defaults by the vendor, and use one that is a kit you will be ok. The only firmware that is 100% compliant for deltas is repetier host. for example as much as i like marlin firmware, the lcd command menus do not perform homing functions as needed for proper function of dby jamesdanielv - General
probably a calculation of distance before a travel move. if a distance is within a certain amount based on buffered moves then extruder is turned off in advance. but i don't see how this works better than a controlled retraction. i think it would be more benefit to have software that would move that extrusion and layer change to an inside layer, so it does not effect visibly the manifold solidsby jamesdanielv - General
guys. this is also possible a hardware issue, such as loose belts, or wires that are rubbing against rods. i would oil the rods, and check to ensure no wires are rubbing against rods, that there are no sticky parts on the rods, and that the bed and carriage are tight. this would be why printing with little acceleration and speed would also fix the issue.by jamesdanielv - General
void step_wait(){ delayMicroseconds(5); this may not be high enough. if there is optical isolation then there is the slew rate time.by jamesdanielv - General
deltas are still experimental except for firmware provided by the vendor. if a vendor such as seemecnc is used for the delta bot then sure its is faster mendel90 is a reliable printer. if you want to print parts at will then this is a good one. prusa printers and formats are a bit more finicky, it is hard to know when z axis will level correctly, or when parts will start to fail. this is wheby jamesdanielv - General
there are several methods. 1 is to use blue tape if pla, or abs juice if it is abs plastic. preference is a heated bed. my method is to use floor acrylic, and wipe it on very thin. let it dry, then print on top of it. some things to consider in general. does anything stick? if not then perhaps the first layer needs to be lowered. re-calibrate z axis and go from there.by jamesdanielv - General
you probably want to look for kits in the 500-700$ range, or get one completely built. if cost is not an issue you could look at the orion from seemecnc. or you could try ultimaker.com web sight. these products have high satisfaction ratings and these vendors are respected by the community and open source ideas. also turn around time is something like 2 weeks to ship. even though a printer mayby jamesdanielv - General
or you could run 6 wires to heated bed,3 for pos, and 3 for neg?by jamesdanielv - General
there are several ways a vendor can get around this, one would require assembly of the power supply as a kit, even if it was only 3-4 pieces, another would be in door assembly, or lift plate assembly. anything that is not ready to run out of box and requires some additional assembly can possibly be called a kit. I would guess that the benefits of more complete assembly would be more customer satiby jamesdanielv - General
#define HEATER_1_PIN -1 //7 #define TEMP_1_PIN 1 this indicates that HEATER_1_Pin is not used with the -1 in front of it. the pin 7 is commented out change it to this: #define HEATER_1_PIN 7 #define TEMP_1_PIN 1 temp1 is taken from adc pin 1 heater pin is digital pin 7. the schematic of board can be found here:by jamesdanielv - General
what speed are you placing the material down at? it looks like your feed stock is skipping. how hard is it to push the feed stock thru by hand? it should slide like butter. if it starts off sliding easily and still extrudes difficult after a minute or two it could be heat creep. what also may be happening is that the feed stock could have heat creep from components and become rubbery inside theby jamesdanielv - Printing
it may be best to use another servo at this point. it is possible that the variable resistor and the end stop of the servo are out of sink. the only way for them to go back to sink is to set servo at 0 and then at max (likely 150deg) there probably has been enough binding that the gears no longer properly mesh, which makes the error greater.by jamesdanielv - General
they should be wired in parallel. reasoning is that z axis is slow enough that change in impedance between motors is negligible. also the voltage driver is low enough (12v) that this is the only way to ensure enough voltage exists for the chopper circuit to control current. if motors are wired in series then about only half of the voltage makes it thru the winding. current is still regulated byby jamesdanielv - General
are you sure you have it angled correctly. so it goes down when homing and up when complete? for exampe turn the switch around so the lowest part of the switch swings thru when raised. also set servo angles in firmware: Uncomment the "ENABLE_AUTO_BED_LEVELING" define (commented by default) You will probably need a swivel Z-MIN endstop in the extruder. A rc servo do a great job. Check the systeby jamesdanielv - General
the article is here: thanks nophead for the research!by jamesdanielv - General
if you use open scad you can change the amount of detail that is used to draw shapes. this is $fn=xx, where xx is the amount of detail. if your holes are too small then i would re-calibrate cura, and input your correct feed-stock size. measure feed stock twice 180deg apart and average the size, then plug this information into cura. hole size should likely get solved.if it does not then a possiblby jamesdanielv - General
several things are wrong with this print. infill perimeters in my opinion should be 2 or greater. fill should be between 0.25 and 0.35 to allow for small gaps so filament can stretch across the top correctly during bridging and after bridging layers. I think that it is important to have the top look solid and this is why my top layers are 7-9, bottom layers are as low as 3, for 0.1mm infill. theby jamesdanielv - General
have you tried homing all axis, and then trying gcode G1 Z50 F400; to verify that it is not a limit proble turn off software limits. 360.#define min_software_endstops true // If true, axis won't move to coordinates less than HOME_POS. 361.#define max_software_endstops true // If true change to 360.#define min_software_endstops false 361.#define max_software_endstops false see if z staby jamesdanielv - General
or another possibility is figure out how the wood feedstock is made and find a way to combine the fine grains of wood into plastic feestock. or one could make paste extruder that feeds wood paste.by jamesdanielv - General
LoboCNC , that sounds interesting, I guess you could look at the winding of the resistor or the heater cartridge as a coil. the issue is with timing to ensure that the coil dissipates its heat quick enough that the temperature somewhat equalizes. but again the thinking for PWM should be about power level.by jamesdanielv - General
can you post your entire firmware and let someone take a look at it. it is possible that either motor driver is not enabled, or if it is a modern board that power level for motor may not be set. several possible errors can be addressed if we see your firmware file. thanks.by jamesdanielv - General
you cant really limit the current, but you can limit the overall power, by pulse width modulation. be sure to use pid method by looking at configuration.h settings in firmware, then look for lines that talk about current limiting or power level. i use between 160-180 for resistors, and 200 for heater cartridges. the benefits of the cartridges is that printer heats up in less time, however youby jamesdanielv - General
you can switch to bang bang method and turn off pid for heated bed, also double wire make 2 wires for gnd and 2 for pos connection on heated bed. also insulate the bottom of the bed. have the top of bed with sheet of glass.by jamesdanielv - General
you would be better off looking at delta bot settings and repetier host. repetier host is the only official firmware used for delta bots by seemecnc.com. seemecnc has instructions for setting up delta bots and firmware comes setup already to work with them. marlin firmware setup is still somewhat buggy especially when it comes to homing. i like marlin firmware but it does not work for delta boby jamesdanielv - General
just make sure the supply is fairly noise free, for example i would not use a cellphone wall charger, i would use a pda power supply that outputs 5volts.by jamesdanielv - General
.ino is used for after version 1 written firmware files. before version 1 they were .pde firmware should be extracted.by jamesdanielv - General
we will need more of an explanation to help you out. how are you connecting extruder and stepper motors together? and what do you mean motors turn on individually. do you have each stepper hooked individually up to its own stepper driver. hopefully this is a real person and not a clever bot! I'm replying too!by jamesdanielv - General
easiest way is a continuity check from pulling fuse out then measuring resistance or continuity.by jamesdanielv - General
so it is printed parts for a rotation axis?by jamesdanielv - General
1k resistor. provides about 10ma to Light Emitting Diode. Voltage drop across diode is around 1.8v. (12v-1.8v) ----------------------------------------- =resistance (current rating in amps) in this case safe setting is assuming 10ma, or 0.01A, =1k resistance as for the bed itself it is 1-2ohms and for voltage drop across thermistor it is 4.7k.by jamesdanielv - General