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10 votes
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Can an extruder rated for 24 V work with 12 V ATX power supply?

Electrical engineering can be quite complex, but in this case you can save yourself with same simple equations/relations. Using the following formulae: Voltage ($\ U$) equals current ($I$) multiplied ...
0scar's user avatar
  • 36.2k
9 votes

Using CAT6 cables for 3D printer motor / sensors / fans

The ampacity question is not completely answerable because CAT6 does not specify wire gauge, so the current limit will depend on the specific gauge you get. CAT6 can be anywhere from 22 AWG to 24 AWG, ...
Tom van der Zanden's user avatar
9 votes
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What is this stepper motor connector called?

Short answer: It's probably 6 pin JST PH Long answer: Without seeing the socket, it's hard to say for sure, however most Nema 17 stepper motors use 6 pin JST PH connectors with 2.0mm pitch on the ...
anttix's user avatar
  • 405
8 votes

Using CAT6 cables for 3D printer motor / sensors / fans

I did this for some of the wiring on my printer, and it's working fine so far. The two cautions are: At @tom pointed out, the heater is the high current item, so be careful of the wire gauge, and ...
TextGeek's user avatar
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8 votes
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Why would one choose 12 V from 24 V, from a safety standpoint?

The most important "safety" advantage when using 24V (compared to 12V) is that to get the same power, you only need half the current. A 192W heated bed would need 16A at 12V, but only 8A at 24V. ...
Tom van der Zanden's user avatar
8 votes
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MOSFET as a safety feature

In the world of (cheap) printers, "MOSFET" has taken on a meaning of its own. For a long time, 3D printers have had MOSFETs on board of their motherboards to switch the heated bed. In the past two ...
Tom van der Zanden's user avatar
8 votes

Electric shock from ender 3 printer PSU

The "shock" is likely from noise filtering circuitry at the power supply's input. For filtering, every power supply has a small capacitor that connects the live input wire to ground (a so-called "...
Tom van der Zanden's user avatar
7 votes
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What type of plug is this?

As 0scar noted, this looks suspiciously like a JST connector, but the left one is not a JST RCY connector and it is neither one of the common JST PH nor JST XH, JST manufacturer pages show. In fact, ...
Trish's user avatar
  • 22.2k
6 votes

Using CAT6 cables for 3D printer motor / sensors / fans

CAT6 cable by itself is not a problem, it is typically 23 AWG solid core wire which can take you to 4A just fine. The real problem comes from the connectors you use. CAT6 usually goes hand in hand ...
Lyle Cheatham's user avatar
6 votes

Can a heatbed PCB (Prusa Mk2) be straightened out?

Electrical engineer here. There is nothing odd about putting a PCB in an oven. Any surface mount PCB is assembled using a reflow oven which heats all the components, as well as the PCB itself, ...
metacollin's user avatar
6 votes
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Power Supply Safety

I suggest looking at the maximum amperage draw for all components that could be on at one time, and then find a power supply that can supply at least 20% more current. You would never want to get a ...
Thetravellingfool's user avatar
6 votes
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Identify temperature sensor

It is quite likely not a thermocouple, but a thermistor: A thermocouple would look like a small blob of metal. The tip of your temperature sensor appears to be a glass bead, which is a commonly used ...
Tom van der Zanden's user avatar
5 votes

RAMPS 1.4, 1.5 or 1.6?

The biggest issue with RAMPS 1.4 (and 1.5) is the power connector is prone to melting/burning, this appears to be fixed on 1.6 with the use of screw terminal blocks. I've used RAMPS 1.4 with both 12v ...
tjb1's user avatar
  • 2,110
5 votes

RAMPS 1.4, 1.5 or 1.6?

The drawback of RAMPS 1.5 and 1.6 are that they use SMD polyfuses which are a little more difficult to replace (for some people) than the large fuses from the RAMPS 1.4. However, the fuses of the ...
0scar's user avatar
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5 votes
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What are the specifications of the dual voltage controller of the Ender 3/CR-10?

I own the Ender 3, and it runs on 24V, as this photo of the power supply shows: From power supply to the board, it uses a 2-wire line connected with a XT60 plug/jack that is common on RC cars: The ...
Trish's user avatar
  • 22.2k
5 votes
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Electric shock from ender 3 printer PSU

You need to take particular care when using plug adaptors - they are not always made to a high standard, and it is possible that the earth connection is not present. If you suspect that the earth ...
Sean Houlihane's user avatar
4 votes
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What does it mean for step and dir "to be on their own ports"?

A "port" for the AVR microcontroller is a set of eight IO pins that are controlled together at a hardware level. The underlying machine code can write an entire byte to set the status of all 8 pins at ...
Ryan Carlyle's user avatar
  • 6,616
4 votes
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What is the influence of a lower BAUDrate?

Baud rate is the rate at which information is transferred in a communication channel, given as a number of bits per second (bps). So a baud rate of 250000 is capable of transferring a maximum of ...
Tormod Haugene's user avatar
4 votes
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Heater cartridge connector for Original Prusa i3 MK2S

This is referred to as a Terminal Block Connector. More specifically this is a 2-position pluggable terminal block connector commonly manufactured by Phoenix Contact and others. Newark.com Sale ...
Ajk Tek's user avatar
  • 56
4 votes

Electric shock from ender 3 printer PSU

An electric shock from a PSU usually means that either the PSU is wired up incorrectly, or the PSU is wired to an ungrounded spot. Often, Adapters are not grounded or sloppily made. Get yourself a ...
Trish's user avatar
  • 22.2k
4 votes
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Ender 3 V2 blank screen and LCD continuous beeping with clicks

Thanks to the comment from @Rykara, they led me to the answer: Could be a bad or incorrectly formatted SD card. I think the card needs to be FAT32 format. Try reformating and/or using a different SD ...
Casheridan's user avatar
3 votes

Ultimaker original X-axis not moving - possible electronics problem

I'm not sure I know exactly what is wrong or what steps you've taken so far, but it seems like your extruder motor is broken and you've narrowed the problem down to electronics. If so, replacing the ...
user67339's user avatar
3 votes
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Can a heatbed PCB (Prusa Mk2) be straightened out?

Baking PCB in an oven is not a good idea, I would say. I know PCBs are resistive to the heat (especially heatbeds) but, still, it sounds odd. But the real question is how baking would help. Let's ...
darth pixel's user avatar
  • 3,476
3 votes

Issue with weird heated bed temperature fluctuations

From the decay curve of the temperature graph, it appears that the firmware is filtering the temperature signal. Since it jumps up so quickly, I suspect that the thermister is indicating a much ...
cmm's user avatar
  • 4,551
3 votes

How much work would be converting Prusa firmware/software for CNC use?

Disclaimer Questions about other machines is still in kind of a grey area right now 06/2016 and your question is, in my opinion, a bit too broad. However, I think it's a great topic to perhaps help ...
tbm0115's user avatar
  • 6,324
3 votes
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Running 12 V on a 24 V heater cartridge?

Applying 12 V to a 24 V heater cartridge won't damage anything, but you may have severe issues reaching and maintaining your target temp. A standard E3D heater cartridge is 40 W. When you run a 24 V ...
Ryan Carlyle's user avatar
  • 6,616
3 votes
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FlashForge Creator Pro Tool Failure! Temp limit reached

It sounds like a failed TC amp chip. But we need to rule out some other stuff. Some important facts about the Creator Pro temp sensor: If you smash and short the two thermocouple wires together, ...
Ryan Carlyle's user avatar
  • 6,616
3 votes

Power Supply Safety

A short, figurative answer from the electronical point of view: A power supply (an an analogy you can view it as a water pump) as used by 3D printers is usually supplying a fixed voltage (a constant ...
kamuro's user avatar
  • 2,942
3 votes
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TronXY Windows 10 driver

Since the printer supports using an SD card, you don't need to connect it directly to a PC. Serial over USB has been broken in the past in various Win10 builds, I've not tried it recently and I've not ...
Sean Houlihane's user avatar
3 votes

TronXY Windows 10 driver

Typically, (hobbyist level, FDM) 3D printers do not require dedicated drivers. They simply show up as a serial port (COMx), and you just need drivers for the USB-to-Serial chip used in the printer's ...
Tom van der Zanden's user avatar

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