Quotejaguarking11 Now beyond blaming the manufacturer for not coming up with an original design. At Least E3D and J-head have published all their hotend schematics so all chinese manufacturers have to do is to follow them, but they can't even do that. Then on top of that they use know good hotends names for their own designs. This is basically a false marketing on top of that they ruin original mby Endlane - General
QuoteOhmarinus Can it be that the pulley isn't the same timing? So GT2 instead of GT2.5 or T2/T2.5 ? That is a good question. I searched google for GT2.5 and it did not provide any good results so I would assume that GT2.5 does not exist. So T2.5 on GT2 pulley? I just had a second look at your photos and it does not look GT2 tooth profile it looks more like T2/T2.5 ones.by Endlane - General
If you are running your heated bet that mosfet will get hot. How hot it will get depends on mosfet itself and how much power your heated bed uses. Check what your mosfet's part number is, then form datasheet you could calculate expected temperature rise. PS. I found a good cdru post about it (http://forums.reprap.org/read.php?13,422091,422183#msg-422183) "While not really helpful in determiningby Endlane - Controllers
Voltage controller is on Mega board. RAMPS itself do not have any voltage regulators it only feeds 12V through D1 to Vin pin on Mega. Mega can be powered form USB or external power supply, but if you have connected both it takes power from external power supply and uses on board 5V regulator to step down 12V to 5V. One other way to test if voltage regulator is working alright is to disconnect Meby Endlane - Controllers
Measure if Mega actually is getting ~12V to it's Vin, although it is probably cheap ass chinese voltage regulator.by Endlane - Controllers
Probably mega's voltage regulator is faulty.by Endlane - Controllers
I do not think you need to change pins.h as expansion should be using the same pins as onboard SD. Only think I can advise is to recheck your wiring, as it either a wiring is wrong or SD expansion board is faulty. Just too make sure are you using this pin out for header?by Endlane - Reprappers
Are you connecting megatronics SDOUT 6. D53 pin to exSD 6. CS?by Endlane - Reprappers
I looked into it. I hoped it was a firmware problem but it is not. It is just a bad megatronics design. SD cards are connected through SPI bus. On Megatronics LCD panels connect to LCD and keypad header but neither of them has SPI, There is ICSP header on the board, but I do not think there is a adapter on the market for LCD panel that uses it so only way to make SD card reader to work is to moby Endlane - Reprappers
Did you change only start_bmp? If you have not changed START_BMPWIDTH, START_BMPHEIGHT, START_BMPBYTEWIDTH try changing them too. u8g.drawBitmapP(0,0,START_BMPBYTEWIDTH,START_BMPHEIGHT,start_bmp); is used to paint picture, so if you only change picture, program still thinks that picture is 64 lines wide.by Endlane - Developers
Set screw holds PTFE liner in place. Nozzle holder should have threads for it in top of bore and your old one should have one, so check if there is one. And for cleaning and old good elbow greaseby Endlane - Printing
No you need:RepRapWorld Also I think you will need new PTFE liner as it probably melted tooby Endlane - Printing
RepRapWorld are selling separate JHead compatible pieces.by Endlane - Printing
To measure thermistor resistance 4.7k pull up resistor is used make voltage divider. I did quick voltage calculations for different thermistor values and they seem close enough to your measured ones, so we could assume that voltage divider part is working fine too. 100k-4.77V 50k-4.57V 25k-4.2V 10k-3.4V 5k-2.57V Also you could test other thermistor inputs and if they are also not working correcby Endlane - Reprappers
There should be no measurable difference between where you connect to GND, unless board is faulty. You could be measuring between +12V and 3.3V rather than GND(0V) and 3.3V, but still you should get ~12V-3.3V=~8.7V, so it is strange why you are getting 6.4V.by Endlane - Reprappers
Ok I have looked at drv8825 datasheet again and looks like I was a little wrong about voltage. Yes you connect 12V, but microcontroller works on 5V from voltage regulator, so I also assumed that drivers should be getting voltage for Vref from board, but it looks like drv88825 has internal 3.3V regulator which is used to supply voltage for Vref (at least in pololus driver), so it is even more conby Endlane - Reprappers
At lest from pololus from their website: "way to set the current limit is to measure the voltage on the “ref” pin and to calculate the resulting current limit (the current sense resistors are 0.100Ω). The ref pin voltage is accessible on a via that is circled on the bottom silkscreen of the circuit board. The current limit relates to the reference voltage as follows: Current Limit = VREF × 2" Frby Endlane - Reprappers
Is it a stainless itself is making it more sticky or it's surface quality?by Endlane - Developers
Your post was not removed, but moved to "Crowdfunding Projects Announcements" forum section where it should belong in the first place.by Endlane - General
QuoteDraob With coreXY the belts cross over at the back. I don't see this with your setup, don't know if that is o.k. (No experience with these kinds of setups) CoreXY setup looks alright. You do not need to cross over belts if you run them at different levels. It looks like he used this setup:by Endlane - CoreXY Machines
This may help, at least with text and logo.by Endlane - Developers
It could be stepper driver overheating, but this does not explain why it prints ABS fine.by Endlane - General Mendel Topics
I am not sure if software modification is the best course as you probably will need to modify most of stepper.cpp and then you will be stuck with same firmware as new firmware will require same modifications done to it. I got idea about hardware modification, but I am not sure if it is possible as am not that good with electronics. Basically use logic gates to switch signals, this way no firmwareby Endlane - Developers
Hm, firstly am not sure if it is a stepper motor, as even in ebay it only states that it is a drive motor. Couple good quality photos of PCB also might help. The only thing I can think of is to try searching for similar IC in the same package as AM6807.by Endlane - Stepper Motors, Servo Motors, DC Motors
I did not want to create a separate post at it is related, although it is more for regular coreXY system, so I will post it here. Obviously it is best to route lines in one plane, but it also reduces print aria, so I though routing line in two planes. This way line system should have minimum impact on printing aria. What do you think about it? Also I have read that some people are using 50kg/by Endlane - Developers
I looked at DRV8825 and A4988 stepper motors controllers datasheets and both of them at Full step mode uses 2-phase excitation. I do not see what is confusing about it. 1-phase mode uses single coil, while 2-phase uses both coils to at least in theory to provide more torque and it's step positions are shifted by half step compared to 1-phase drive. Also I do not see a point in "Dual phase worksby Endlane - Developers