<p>This answer addresses the input voltage. If you look up the official replacement board at the official Creality store the board features a single pair of connectors next to it says: 12 V / 24 V. So you can either use 12 V, or 24 V, not both. An internal regulator will most probably reduce the voltage anyways. </p>

<p><a href="https://i.sstatic.net/W1xgl.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/W1xgl.png" alt="Detail of the replacement board, single 12/24 V power connector is encircled"></a></p>

<p>Please note that (kindly reminded by user profesor79 through the comments) that the microprocessor on these boards only use 5 V. So any voltage you supply (12 or 24 V), the voltage regulator will always make sure the microprocessor does not get more than 5 V. However, that does not necessarily apply to all peripherals connected to the board! This should be verified if for the peripherals also a voltage regulator is used. One of my own boards, <a href="https://reprap.org/wiki/RUMBA" rel="nofollow noreferrer">the RUMBA board</a> can be fed by any voltage ranging from 12 V - 35 V, but this also applies to the peripherals like the heater cartridge and the fans! I use the RUMBA with a 24 V power supply, so I need to use 24 V fans heater elements and heat bed.</p>

CC BY-SA 4.0
2018-08-02T08:26:02.493Z
the most important thing to say that the regulator will provide 5V to ttl(Arduino) and the full value of input voltage will be applied to peripherals. Having that in mind - changing PSU voltage will require to change fans, heaters, and even steppers.
profesor79
CC BY-SA 4.0
2018-08-02T10:53:46.130Z
@professor79 Yes totally true, good addition, I did not bother to add that, I will make that more clear
0scar
CC BY-SA 4.0
2018-08-13T19:22:17.500Z
I can confirm this measurement (after first reading the wrong line and getting a wrong factor in) If U_S=24V, then the bed, fans and heater cartridge run on U=24V, the switches have 5V.
Trish
CC BY-SA 4.0
2018-08-01T22:27:38.280Z
2018-08-02T21:42:11.433Z
2018-08-02T21:42:11.433Z
0scar
<p>I own the Ender 3, and it runs on 24V, as this photo of the power supply shows:
<a href="https://i.sstatic.net/3VrGx.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/3VrGx.jpg" alt="Ender3 Power supply" /></a></p>
<p>From power supply  to the board, it uses a 2-wire line connected with a XT60 plug/jack that is common on RC cars:
<a href="https://i.sstatic.net/uXc5B.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/uXc5B.jpg" alt="XT60 connector on Ender3" /></a></p>
<p>The board itself is a proprietary design and labeled as &quot;V1.1.2&quot;. The Voltage in is the lowest input on the left:
<a href="https://i.sstatic.net/xQBpB.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/xQBpB.jpg" alt="Creality3D V1.1.2" /></a></p>
<p>The Cooling fan (blue-yellow wire), the hotend cooling fan, heater cartridge (white shielded), bed heater (left black-red), board cooling fan (middle red-black) run (in this setup) on 24V. The Logic connectors (black-black &amp; White-white) run 5V logic. I could not figure out the voltage of the stepper motors (upper row).</p>
<p>I have not figured out how the power management circut works, but it achieves this:</p>
<ul>
<li>Supply voltage <span class="math-container">$ U_S = 12\ \text V \lor 24\ \text V $</span></li>
<li>Logic Voltage <span class="math-container">$ U_L = 5\ \text V $</span></li>
<li>Sensor Voltage <span class="math-container">$ U_{sens} = U_L$</span></li>
<li>Hotend Cooling Fan <span class="math-container">$ U_{cool} = U_S$</span></li>
<li>Hotend Heating Cartridge <span class="math-container">$ U_{hot} = U_S $</span></li>
<li>Heatbed <span class="math-container">$ U_{bed} = U_S $</span></li>
</ul>
<p>The chip's caption can't be read on the photo, but it is labeled as &quot;Δ ATMEL // ATMEGA1284P // AU 1726&quot;</p>
<p>For the pinout, a <a href="https://www.chaos-drucker.de/anleitungen-und-tutorials/creality-ender3-mit-marlin-ausstatten/" rel="nofollow noreferrer">german maker</a> did determine, that it the configuration of a <a href="https://github.com/Lauszus/Sanguino" rel="nofollow noreferrer">Sanguino</a> equipped with an Atmega1284P 16Bit works for compiling firmware and flashing via a bootloader.</p>

CC BY-SA 4.0
2018-08-03T18:44:25.220Z
2022-05-08T19:14:05.373Z
2022-05-08T19:14:05.373Z
Trish
<p>Following on from <a href="https://3dprinting.stackexchange.com/questions/6342/what-level-of-voltage-does-the-creality-ender-3-run-at/6521#comment9993_6521">What level of voltage does the Creality Ender-3 run at?</a></p>

<p><a href="https://3dprinting.stackexchange.com/questions/6342/what-level-of-voltage-does-the-creality-ender-3-run-at#answer-6521">Dave's answer</a> states that both 12&nbsp;V and 24&nbsp;V can be used on the controller board. It also goes on to say that the controller board is used in both configurations in two different printers:</p>

<ul>
<li>Ender 3 and;</li>
<li>CR-10</li>
</ul>

<p>I would like to know how this dual voltage operation works:</p>

<ul>
<li>Does it use both voltages at the same time, or either one or the other? </li>
<li>Are there two different electrical inlets or are they the same?</li>
<li>Does it auto-detect or are there jumpers used to configure or are the components tolerant to both voltage levels? </li>
</ul>

<p>Also related:</p>

<ul>
<li>What is the board used? </li>
<li>Is the board a proprietary design or a standard third party board? </li>
<li>Does anyone have any photos of the board and/or schematics?</li>
</ul>

<electronics><creality-cr-10><creality-ender-3>
What are the specifications of the dual voltage controller of the Ender 3/CR-10?
Greenonline
# What are the specifications of the dual voltage controller of the Ender 3/CR-10?

(Asked by: username_0 on 2018-08-01)

Following on from [What level of voltage does the Creality Ender-3 run at?](https://3dprinting.stackexchange.com/questions/6342/what-level-of-voltage-does-the-creality-ender-3-run-at/6521#comment9993_6521)

[Dave's answer](https://3dprinting.stackexchange.com/questions/6342/what-level-of-voltage-does-the-creality-ender-3-run-at#answer-6521) states that both 12 V and 24 V can be used on the controller board. It also goes on to say that the controller board is used in both configurations in two different printers:

* Ender 3 and;
* CR-10

I would like to know how this dual voltage operation works:

* Does it use both voltages at the same time, or either one or the other?
* Are there two different electrical inlets or are they the same?
* Does it auto-detect or are there jumpers used to configure or are the components tolerant to both voltage levels?

Also related:

* What is the board used?
* Is the board a proprietary design or a standard third party board?
* Does anyone have any photos of the board and/or schematics?

**Tags:** electronics, creality-cr-10, creality-ender-3

---

## 2 answers

### Answer by username_3 on 2018-08-03. Score: 5 | Accepted answer

I own the Ender 3, and it runs on 24V, as this photo of the power supply shows:
[![Ender3 Power supply](https://i.sstatic.net/3VrGx.jpg)](https://i.sstatic.net/3VrGx.jpg)

From power supply to the board, it uses a 2-wire line connected with a XT60 plug/jack that is common on RC cars:
[![XT60 connector on Ender3](https://i.sstatic.net/uXc5B.jpg)](https://i.sstatic.net/uXc5B.jpg)

The board itself is a proprietary design and labeled as "V1.1.2". The Voltage in is the lowest input on the left:
[![Creality3D V1.1.2](https://i.sstatic.net/xQBpB.jpg)](https://i.sstatic.net/xQBpB.jpg)

The Cooling fan (blue-yellow wire), the hotend cooling fan, heater cartridge (white shielded), bed heater (left black-red), board cooling fan (middle red-black) run (in this setup) on 24V. The Logic connectors (black-black & White-white) run 5V logic. I could not figure out the voltage of the stepper motors (upper row).

I have not figured out how the power management circut works, but it achieves this:

* Supply voltage $ U\_S = 12\ \text V \lor 24\ \text V $
* Logic Voltage $ U\_L = 5\ \text V $
* Sensor Voltage $ U\_{sens} = U\_L$
* Hotend Cooling Fan $ U\_{cool} = U\_S$
* Hotend Heating Cartridge $ U\_{hot} = U\_S $
* Heatbed $ U\_{bed} = U\_S $

The chip's caption can't be read on the photo, but it is labeled as "Δ ATMEL // ATMEGA1284P // AU 1726"

For the pinout, a [german maker](https://www.chaos-drucker.de/anleitungen-und-tutorials/creality-ender3-mit-marlin-ausstatten/) did determine, that it the configuration of a [Sanguino](https://github.com/Lauszus/Sanguino) equipped with an Atmega1284P 16Bit works for compiling firmware and flashing via a bootloader.


---

### Answer by username_1 on 2018-08-01. Score: 3

This answer addresses the input voltage. If you look up the official replacement board at the official Creality store the board features a single pair of connectors next to it says: 12 V / 24 V. So you can either use 12 V, or 24 V, not both. An internal regulator will most probably reduce the voltage anyways.

[![Detail of the replacement board, single 12/24 V power connector is encircled](https://i.sstatic.net/W1xgl.png)](https://i.sstatic.net/W1xgl.png)

Please note that (kindly reminded by user profesor79 through the comments) that the microprocessor on these boards only use 5 V. So any voltage you supply (12 or 24 V), the voltage regulator will always make sure the microprocessor does not get more than 5 V. However, that does not necessarily apply to all peripherals connected to the board! This should be verified if for the peripherals also a voltage regulator is used. One of my own boards, [the RUMBA board](https://reprap.org/wiki/RUMBA) can be fed by any voltage ranging from 12 V - 35 V, but this also applies to the peripherals like the heater cartridge and the fans! I use the RUMBA with a 24 V power supply, so I need to use 24 V fans heater elements and heat bed.

> **Comments:**
> **username_2**: the most important thing to say that the regulator will provide 5V to ttl(Arduino) and the full value of input voltage will be applied to peripherals. Having that in mind - changing PSU voltage will require to change fans, heaters, and even steppers.  
> **username_1**: @professor79 Yes totally true, good addition, I did not bother to add that, I will make that more clear  
> **username_3**: I can confirm this measurement (after first reading the wrong line and getting a wrong factor in) If U_S=24V, then the bed, fans and heater cartridge run on U=24V, the switches have 5V.  

---

