<p>The Matek PDB has a 5V regulator and this can be used to power the fc.</p>
<p>Just wire the PDB to one of the unused ESC plugs on the FC. The FC has solder pads for 6 ESCs (right on the picture) and for a quad you usually only need 4. So the connectors 1-4 are used for the escs and you can use 5 or 6 for the PDB.</p>
<p>The center pin (with + above) is 5V and the outer pin is ground (- above). Connect these two pads to the according pads on the PDB.</p>
<p><a href="https://i.sstatic.net/xBHyI.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/xBHyI.jpg" alt="cc3d pinout" /></a></p>

CC BY-SA 4.0
2020-06-30T07:33:08.203Z
2020-06-30T07:33:08.203Z
bingo-fuel
<p>Does your Matek power board have a 5V output? If it does have built in BECs, as your post suggests, you could be able to use those.</p>
<pre><code>                                     ┌─────────────────────────┐
                                     │       ┌─────────────────┼┐
                                  ╔══╧══╗ ╔══╧══╗              ││
                                  ║ ESC ║ ║ ESC ║              ││
                                  ╚══╤══╝ ╚══╤══╝              ││
    ╔═══════════════╗  ╭───────╮  ╔══╧═══════╧══╗  ╭──────╮  ╔═╧╧═╗
    ║ LiPo Battery  ╟──┤  14V  ├──╢ Power Board ╟──┤  5V  ├──╢ FC ║
    ╚═══════════════╝  ╰───────╯  ╚══╤═══════╤══╝  ╰──────╯  ╚═╤╤═╝ 
                                  ╔══╧══╗ ╔══╧══╗              ││
                                  ║ ESC ║ ║ ESC ║              ││
                                  ╚══╤══╝ ╚══╤══╝              ││
                                     │       └─────────────────┼┘
                                     └─────────────────────────┘
</code></pre>

CC BY-SA 4.0
2020-06-30T07:34:36.653Z
2020-06-30T07:34:36.653Z
Kralc
<p><strong>Frame:</strong> Carbon fiber 250mm<br />
<strong>Motors:</strong> 2300Kv 2204<br />
<strong>Power board:</strong> Matek built in BEC’s 12V + 5V<br />
<strong>FC:</strong> CC3D<br />
<strong>ESCs:</strong> HLGRC 30A opto (no BEC)<br />
<strong>Battery:</strong> Turnigy Graphene 14V 75C 4S<br />
<strong>Receiver:</strong> Turnigy iA6B</p>
<p>My question is, this is the first time I’ll be using the opto on a drone. How do I power the FC without frying it, seeing as how there are no BECs on the ESCs?</p>

<multirotor><quadcopters><building><compatibility>
Will this set up fry my components?
Kyle
# Will this set up fry my components?

(Asked by: username_0 on 2020-06-30)

**Frame:** Carbon fiber 250mm  
**Motors:** 2300Kv 2204  
**Power board:** Matek built in BEC’s 12V + 5V  
**FC:** CC3D  
**ESCs:** HLGRC 30A opto (no BEC)  
**Battery:** Turnigy Graphene 14V 75C 4S  
**Receiver:** Turnigy iA6B

My question is, this is the first time I’ll be using the opto on a drone. How do I power the FC without frying it, seeing as how there are no BECs on the ESCs?

**Tags:** multirotor, quadcopters, building, compatibility

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## 2 answers

### Answer by username_1 on 2020-06-30. Score: 4

The Matek PDB has a 5V regulator and this can be used to power the fc.

Just wire the PDB to one of the unused ESC plugs on the FC. The FC has solder pads for 6 ESCs (right on the picture) and for a quad you usually only need 4. So the connectors 1-4 are used for the escs and you can use 5 or 6 for the PDB.

The center pin (with + above) is 5V and the outer pin is ground (- above). Connect these two pads to the according pads on the PDB.

[![cc3d pinout](https://i.sstatic.net/xBHyI.jpg)](https://i.sstatic.net/xBHyI.jpg)


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### Answer by username_2 on 2020-06-30. Score: 1

Does your Matek power board have a 5V output? If it does have built in BECs, as your post suggests, you could be able to use those.
                                     ┌─────────────────────────┐
                                     │       ┌─────────────────┼┐
                                  ╔══╧══╗ ╔══╧══╗              ││
                                  ║ ESC ║ ║ ESC ║              ││
                                  ╚══╤══╝ ╚══╤══╝              ││
    ╔═══════════════╗  ╭───────╮  ╔══╧═══════╧══╗  ╭──────╮  ╔═╧╧═╗
    ║ LiPo Battery  ╟──┤  14V  ├──╢ Power Board ╟──┤  5V  ├──╢ FC ║
    ╚═══════════════╝  ╰───────╯  ╚══╤═══════╤══╝  ╰──────╯  ╚═╤╤═╝ 
                                  ╔══╧══╗ ╔══╧══╗              ││
                                  ║ ESC ║ ║ ESC ║              ││
                                  ╚══╤══╝ ╚══╤══╝              ││
                                     │       └─────────────────┼┘
                                     └─────────────────────────┘


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