New ESP32-WROVER Ethernet Board

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mikemoy
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Re: New ESP32-WROVER Ethernet Board

Postby mikemoy » Wed May 16, 2018 12:22 pm

I started on that design last week ;)
I found a few Rj45's that have the magnetics and access to the power pins.
https://www.digikey.com/product-detail/ ... ND/5800452

I also added this POE module to the design. It can be added on top of the module for those who want POE.
http://www.silvertel.com/poe-modules/379-ag9900.html

Just working hard to keep it the same size ;)
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Vader_Mester
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Re: New ESP32-WROVER Ethernet Board

Postby Vader_Mester » Thu May 17, 2018 7:55 am

The price of that RJ45 is pretty hefty :shock: But compactness is costly so I'm not surprised.

The PoE module is a good idea, however I found that not many people use the 48V system, because of the cost of converter modules. Instead I found that people use 12V or 24V, (most cameras use 12V and not even isolated DC-DC :D ) which is much cheaper to get the DCDC modules to convert it down to 5V or 3.3V, and also you can buy 12V ans 24V adapters anywhere. 48V? Not really. The whole signiture thing is... I think the actual standard is only used in industial situation, most makes don't buy that expensive stuff. Technically you can put any voltage on the PoE pairs.

Disadvantage is of course the voltage drop, which increases by cable length and current, but using more than 1A is a rare occasion, and under that, the drop is within the limits even for a longer cable, say 20m.

So adding an actual PoE module, is a plus, but just anoying additional cost. But this is just my opinion.

Code: Select all

task_t coffeeTask()
{
	while(atWork){
		if(!xStreamBufferIsEmpty(mug)){
			coffeeDrink(mug);
		} else {
			xTaskCreate(sBrew, "brew", 9000, &mug, 1, NULL);
			xSemaphoreTake(sCoffeeRdy, portMAX_DELAY);
		}
	}
	vTaskDelete(NULL);
}
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mikemoy
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Re: New ESP32-WROVER Ethernet Board

Postby mikemoy » Thu May 17, 2018 11:12 am

I agree that the cost of the RJ45 is high. However it has a few features that I like in it over others I have looked at. such as filtering on the POE lines, and I want to keep the size down, so having the transformer built in is a plus as well.
As for the POE module. I am still keeping the original onboard power supply. The POE module output was going to feed the onboard power supply's input anyways & I was going to route the POE modules output pin to a pin on the header so the user could use that to power whatever they liked with it. It's up to the buyer to choose if they want the to add the POE modules or not. If not, but they want to take the chance of dirty power power over the POE lines they could just jumper the POE module input to the output to bypass it.

My day job is building industrial equipment. So it's in my blood to design things right, and not to minimize cost. It's been a struggle for me to make this as low cost as possible because there are so many pit falls out there that a use can do to make it fail, that I implement to help it overcome.
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Vader_Mester
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Re: New ESP32-WROVER Ethernet Board

Postby Vader_Mester » Sat May 19, 2018 8:45 am

That's cool! Looking forward to it!

Code: Select all

task_t coffeeTask()
{
	while(atWork){
		if(!xStreamBufferIsEmpty(mug)){
			coffeeDrink(mug);
		} else {
			xTaskCreate(sBrew, "brew", 9000, &mug, 1, NULL);
			xSemaphoreTake(sCoffeeRdy, portMAX_DELAY);
		}
	}
	vTaskDelete(NULL);
}
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mikemoy
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Joined: Fri Jan 12, 2018 9:10 pm

Re: New ESP32-WROVER Ethernet Board

Postby mikemoy » Fri Jun 01, 2018 5:10 pm

FWIW, prototypes have been send out. Will receive them next week.
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Vader_Mester
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Re: New ESP32-WROVER Ethernet Board

Postby Vader_Mester » Sun Jul 15, 2018 5:09 pm

mikemoy wrote:FWIW, prototypes have been send out. Will receive them next week.
Hey man! How's it going with this project?

Code: Select all

task_t coffeeTask()
{
	while(atWork){
		if(!xStreamBufferIsEmpty(mug)){
			coffeeDrink(mug);
		} else {
			xTaskCreate(sBrew, "brew", 9000, &mug, 1, NULL);
			xSemaphoreTake(sCoffeeRdy, portMAX_DELAY);
		}
	}
	vTaskDelete(NULL);
}
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mikemoy
Posts: 626
Joined: Fri Jan 12, 2018 9:10 pm

Re: New ESP32-WROVER Ethernet Board

Postby mikemoy » Tue Jul 17, 2018 3:12 pm

Hey man! How's it going with this project?
I just moved last week, and it's been a nightmare. Finally got around to setting my office back up yesterday. Haven't had access to a computer for 2 weeks!!! Still cant find my soldering tips ;) Let alone the prototypes I ordered with the POE addition.
As I get more settled in and find my stuff I will get back on it, But it seems to me there are not as many people who think this is a cool as I do.
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smuellener
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Joined: Sat Jul 28, 2018 7:57 am

Re: New ESP32-WROVER Ethernet Board

Postby smuellener » Sat Jul 28, 2018 8:07 am

Hello Mikemoy

I tried using the Olimex Ethernet Gateway but running BLE and Wifi/ETH at the same time is using up too much memory (at least when done using the ArduinoIDE). Hence I would be interested to trying the same thing on your board with the WROVER. Would you be willing to send one or two boards over to Zurich, Switzerland? Or are you using Altium?

Thanks!
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mikemoy
Posts: 626
Joined: Fri Jan 12, 2018 9:10 pm

Re: New ESP32-WROVER Ethernet Board

Postby mikemoy » Sun Jul 29, 2018 2:59 am

I am using the ESP32-Wrover, and have not even come close to running out of memory.
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javiec
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Joined: Sat Mar 17, 2018 11:55 pm

Re: New ESP32-WROVER Ethernet Board

Postby javiec » Sun Jul 29, 2018 3:37 pm

Hello, nice board!!

It is possible to buy one in some place??
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