Ethernet adapter recommendation

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dimitre

dimitre

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I'm making an Teensy based controller for APA102, to send data throught OSC via Ethernet.
Proof of concept is already working, it hangs after one minute, but I think the ENC28J60 is to blame. I've read yesterday about heat issues.
I'm looking for a better ethernet adapter to do that, and which ones do you recommend me?

Do you think this one is usable with Teensy?
http://www.ebay.co.uk/itm/LAN8720-M...590528?hash=item2a645f40c0:g:aqQAAOSwzvlW-6UU

Thank you!

controller.jpg
 
We can't really help without you posting the code and the library you use.

My typical test setup is an Wiz820io as pictured. For production units I sometimes switch to a cheaper Wiz550io.

IMAG3822.jpg
 
The LAN8720 is not a full controller, it's just a PHY. It may work with the Teensy 3.6, which has an Ethernet MAC integrated. For the 3.1/3.2 you need a full controller.
 
I have a HanRun module similar to the one in the photo and I haven't had any heating problems with it. I haven't used it for long periods of time but so far haven't had any problems that I couldn't ultimately blame on loose wires.
So, we need to see your code and a circuit diagram.

Pete
 
Just a note: I had beta access to the pending and p#4 linked PJRC Ethernet adapter for the Teensy 3.6. I ran it responding to PINGS for days with no apparent heat issues and no lack of timely response or hangs. The test code wasn't good for much more than pings - at least not in my hands - but I did that while doing some other serial I/O busy work - etc - with no failings. The base code was picking up and logging some numerous whois type broadcasts on my local network. And with ambient °F temps at 70-75 leaving the unit running about 100 at the hottest spot when piggybacked to the T_3.6 unit with the same temp range - running OC'd to 240 MHz.
 
Thanks for all the tips. I'll post a follow up.
Isolating code pieces I've found FastLED + USB are not a good combination at the moment.
There is some SPI issue and other people are experiencing it too.
I've post there a minimal test case
https://github.com/FastLED/FastLED/issues/339

Strangely enough it runs stable with external power source, and chip doesn't heat up even with lots of data transfer (video frames per second).
 
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