ESP8266 Community Forum

- Tue Sep 26, 2017 11:52 pm #70339

You can take a look at how this project works.

https://github.com/forkineye/ESPixelStick

Thanks, I will take a look

- Tue Sep 26, 2017 11:57 pm #70340

How much data are you sending? How fast does it need to be delivered? How critical is timing? Is it critical that no data is lost?

These are some of the first questions that come to mind.

OK, so I want to build something like the LaMetric display. So every page has an image index number (byte)
(images stored on the ESP), color number (byte), duration (byte) and text which is up to 6 characters. And there is no limit to the number of pages, but let's practically say 10.
What I had in mind is that the ESP cycles through these pages, and when it reaches the last page is displays the clock and during the clock it get an update. The clock would be up for 5-10 seconds. I just want to make sure that the communication happens there, not any time e.g. in a middle of a page transition to impact the visuals.
And data loss: well, probably not that critical. If I have 10 pages each lasting 10 seconds, I will get an update every cca 2 min. So if one lost there will be another 2 minutes later.
That is the rough idea.

- Wed Sep 27, 2017 3:09 am #70354 That should be simple, using either TCP or UDP. I'm curious about the high UDP packet loss you mentioned, sounds wrong to me.

- Wed Sep 27, 2017 7:49 am #70362

That should be simple, using either TCP or UDP. I'm curious about the high UDP packet loss you mentioned, sounds wrong to me.

I agree. I have had very good results with UDP Unicast. UDP Multicast, crappy.