Search found 6 matches

by tltltl
Mon Oct 22, 2018 7:34 am
Forum: General Discussion
Topic: RMT based NeoPixels (WS2812B) flickers when WiFi is used
Replies: 17
Views: 5670

Re: RMT based NeoPixels (WS2812B) flickers when WiFi is used

This problem sadly never got resolved. We tried many different things. We used different pieces of SW, different libraries, different approaches (RMT, separate pinned task, etc). As far as we could tell, we couldn't make any progress except that some approaches flickered a bit more and some a bit le...
by tltltl
Wed Sep 26, 2018 1:15 pm
Forum: ESP32 IDF
Topic: ESP-IDf-LWIP: Potentiall ARP-Checking BUG?
Replies: 1
Views: 882

ESP-IDf-LWIP: Potentiall ARP-Checking BUG?

Hey people I have an issue where I can see, that the ESP does perform the DHCP negotiation perfectly fine, and afterwards sends a DHCP-Decline. Based on my investigation I'm pretty sure it happens because of the ARP-Checking the LWIP does afterwards. After it has successful negotiated an IP, it does...
by tltltl
Wed Dec 20, 2017 6:52 am
Forum: General Discussion
Topic: RMT based NeoPixels (WS2812B) flickers when WiFi is used
Replies: 17
Views: 5670

Re: RMT based NeoPixels (WS2812B) flickers when WiFi is used

Thanks for your input!

We tried various combination inclusive all turned on and off. Sadly no solution either.
by tltltl
Tue Dec 19, 2017 5:14 pm
Forum: General Discussion
Topic: RMT based NeoPixels (WS2812B) flickers when WiFi is used
Replies: 17
Views: 5670

Re: RMT based NeoPixels (WS2812B) flickers when WiFi is used

So we tried to power the NeoPixels from a completely different power source. We observed a stable voltage of 4,5V or 5V (depending on what we configured). Also the ESP32 has enough power (at least the voltage is stable). We analyzed the signal directly on the GPIO-Pin and as well as after our "ampli...
by tltltl
Tue Dec 19, 2017 7:24 am
Forum: General Discussion
Topic: RMT based NeoPixels (WS2812B) flickers when WiFi is used
Replies: 17
Views: 5670

Re: RMT based NeoPixels (WS2812B) flickers when WiFi is used

Hy and thanks for your answer. Yes, the NeoPixel get 5V. Important to note is, that the pixels and the control of the pixels work flawlessly. We get way more than 60Hz and can do animations and whatnot. Everything is as it should be and as we wanted. But as soon as we start using the wifi, some of t...
by tltltl
Mon Dec 18, 2017 5:12 pm
Forum: General Discussion
Topic: RMT based NeoPixels (WS2812B) flickers when WiFi is used
Replies: 17
Views: 5670

RMT based NeoPixels (WS2812B) flickers when WiFi is used

Hello Everyone As described by the title i try to do some "animations" with NeoPixels and a ESP32. They work perfectly fine and do exactly what expected and programmed. I use the followint RMT-based library: https://github.com/marcmerlin/IoTuz/blob/master/ws2812.cpp Now, as soon as I use the WiFi th...

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