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doc: wiring details

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King Kévin 2023-10-15 08:41:26 +02:00
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README.md
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@ -29,31 +29,68 @@ And I find the logo nice.
power
-----
The board can use the power injected in the Ethernet cable, or through the 8-60V screen terminal.
Using the terminal injects back the power to the Ethernet cable, allowing chained board to also be powered using a single power supply input.
Do not connected multiple external power supplies on different boards, as they could interfere with each other.
The built-in 5V DC-DC converter is only rated up to 5A, limiting the total maximum output to 25W.
This means you can power up to 5 m of WS2812b 30 LEDs/m strip at full brightness.
For more LEDs, limit the brightness in WLED, or use multiple boards and chain them.
The spring loaded terminals are only rated for 2A, with a maximum wire size of AWG 20.
If you intend to draw more current, you can add a connection to another 5V output from the LEDs port or the 5V screw terminal (can handle up to 5V).
This is particularly relevant for re-injecting power, which you should do minimum every 5 meters.
Connect the 5V LED strip power wire to the screw terminal.
Wire all 5V LEDs cables together on this terminal, including the additional ones for power injection.
The terminal can also be used to power the board if no power is present on the Ethernet cable or 8-60V power input.
If you need more than 5A, you are exceeding the use case of this board.
Switch back to using an external power supply and connect the LED strips directly to it.
You can even power the board with the same 5V or 8-60V power supply using the DC jack or screw terminals.
You can even power the board with the same 5V or 8-60V power supply using the DC jack (for 8-60V) or screw terminals (for 5V and 8-60V).
The 8-60V power input allows using any kind of power supply, like common 12V, 24V, or 48V.
But is also allows using 48V LiPo batteries (going up to 55V), to operate them without grid power.
It also allows using 48V LiPo batteries (going up to 55V), to operate the devices without grid power.
There is an over current input protection of 2A using an PPTC.
This is to protect the board from very bad accidents, and because Ethernet cables are no meant to carry power (PoE limit is 960 mA per pair, we are using two).
To be able to power multiple WLED chains, each drawing 25W, use higher voltages (48V up to 60).
To be able to power multiple WLED chains, each drawing 25W, use higher voltages (48V up to 60V).
If you are using 12V or 24V LED strip (e.g. not 5V), you can use the screw terminal to re-use the corresponding 8-60V output.
This is not fused.
If you are using 12V or 24V LED strip (e.g. not 5V), you can use the screw terminal to re-use the corresponding 8-60V.
The over current input protection is only for the board.
The terminal is directly connected to the Ethernet port for power injection
But if your are using Ethernet cables, you still should not exceed the 2A limits.
And if you are using these higher voltage LED strips, you probably are building bigger light installation, and should take can of the power supply separately instead of relying on the WLED chain.
Then you can also use this power supply to power the WLED chain board using the 8-60V port, but only one of them in the whole chain (else the multiple power supplies might interfere with each other).
The 8-60V input is also reverse polarity protected, after the fuse.
The 5V rail input/outputs are not fuse or reverse polarity protected.
wiring
------
The board are primarily meant to be used with common [sonoff enclosure](https://www.sonoffegypt.com/products/sonoff-ip66-waterproof-case).
This provides protection against dust, metal induced shorts, and water.
The board can be mounted using M2.5 self tapping screws to the enclosure.
All cables inserted in the enclosure can be connected to the board while mounted in the enclosure using the terminals.
Since RJ45 8P8C connectors does not fit the PG7 glands, they need to be cut.
The resulting wires can be inserted in the spring loaded terminal marked RJ45, following the pin numbering.
The wire colors are also listed on the back of the board, in case it is already not mounted.
In case boards need to be chained, two Ethernet cable can be inserted using the two glands, and the same number wires should be inserted together in the terminal.
8-60V power supply can be inserted using additional glands on the opposite side of the Ethernet cables.
The wires should be connected using the screw terminal marked 8-60V.
Follow the +/- indications on the board.
The LEDs strips cables can be inserted using additional glands on the opposite side of the Ethernet cables.
The 5V and ground wire should be grouped together and connected using the screw terminal marked 5V.
Follow the +/- indications on the board.
The data wire should be inserted in the spring loaded terminal marked LED DATA.
The corresponding I/O configured in WLED is indicated on the side.
In case the board is not mounted in the enclosure, other ports can be used.
8-60V power input can be connected using the 2.1/5.5 mm ID/OD DC barrel jack.
The Ethernet cables can be directly connected using the two RJ45 ports (either is fine as they are interconnected).
The USB, DC barrel, and RJ45 port are not accessible when the board is in the enclosure simply because there isn't enough space.
But free free to add hole to the enclosure to access them.
This would also remove the waterproof advantage though.
features
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