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Ethernet jacks

A project log for wESP32: Wired ESP32 with Ethernet and PoE

A low cost ESP32 core board with Ethernet and PoE for convenient "single cable" deployments

patrick-van-oosterwijckPatrick Van Oosterwijck 06/21/2018 at 20:0511 Comments

Back from vacation and finally more or less caught up.  My Ethernet jacks arrived from Hanrun while I was away, 250 of them.  A quick check shows that luckily, they seem to fit my footprint:

That's a relief! :)

I've also been creating the BOM and crunching some numbers on pricing to get a better idea of what the BOM cost and COGS might be, and unfortunately it's higher than what I had been guessing.  Bottom line is that with the numbers I see, in low quantities this is likely going to be a ~$45 board to make it worth my while.  I know that's a lot more than most ESP32 boards, but usually the only "expensive" part on those is the ESP32 module.  Compared to other "normal" ESP32 boards, the Ethernet jack and phy add a good amount of cost, and the PoE power components like the PD chip and flyback add even more.

So now the question is: would you still be interested in buying this board at that price?  Please comment!

Discussions

volodin.konstantin wrote 08/21/2018 at 14:11 point

Hi. Where one can buy HR861153C jack in small quantities?

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Patrick Van Oosterwijck wrote 04/03/2019 at 19:31 point

Oops, sorry I didn't see this any sooner.

I had to buy these directly from the manufacturer in China.  Up till now I've always bought exactly what I needed for my builds, but maybe it makes sense to order some more so I can sell these in small quantities to people who want to play with them.

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Miktsu wrote 07/20/2018 at 19:38 point

I would also be willing to buy 10-20 of these. Especially the POE capability is the reason I'm interested in this. $45 still seems to be quite reasonable compared to other alternatives.


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Bryan wrote 07/11/2018 at 16:49 point

Hm I am planning to buy multiple (5..10) so I can make custom IoT agents. It seems that the codebase for this chip is solid and the integrated PoE would make it much easier.

It would be nice if with large interest we could lower the price for everyone. ;-)

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Rhys wrote 06/28/2018 at 06:38 point

I would buy one for that for sure.

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eduardo ruiz wrote 06/27/2018 at 16:09 point

I thought the price would be lower but that's what I'm looking for.

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brendan wrote 06/23/2018 at 18:24 point

I’m still interested at $45. Currently there are no other all in one PoE esp32 modules I’ve been able to find.

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Mark Stevens wrote 06/22/2018 at 15:36 point

I sent you a private message.  I am interested in the POE aspect of this, possibly for several components I need to build.  

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Sébastien Dominguez wrote 06/22/2018 at 05:31 point

I personally will buy one of them

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Zellers wrote 06/22/2018 at 03:02 point

$45 is pushing the limits for my immediate application, although probably fine for other people. Just a side question, how much does the PoE add to the BOM and would it be possible to build a cheaper version by simply omitting the PoE components for people who don't need PoE but are looking for a ESP32 with wired Ethernet ? Or does anyone know of a "cheap" ESP32 with wired Ethernet board ?

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Patrick Van Oosterwijck wrote 06/22/2018 at 15:27 point

I think leaving off the PoE components might actually work.  Instead of having the 12V or 5V available on the GPIO header, you'd have to supply an input voltage to the GPIO header instead.

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