Search found 7 matches

by TheSub6
Thu Oct 11, 2018 6:41 am
Forum: General Discussion
Topic: DevkitC v4 app start problem when externaly powered?
Replies: 5
Views: 9305

Re: DevkitC v4 app start problem when externaly powered?

Did you find a solution? I have the same problem. Or kinda.

No Problem on a WROVER-KIT. The same code starts without problems. On the DecKitC I have to press the "EN" button. As far as I remember I hadn't had any problems when just using a simple blink example.
by TheSub6
Mon May 07, 2018 4:09 pm
Forum: General Discussion
Topic: Simple UDP Example
Replies: 1
Views: 3853

Simple UDP Example

Hi, I have been looking for a simple example using ESP32 to receive UDP packets, but couldnt find any good commented examples. From my understanding the underlying library is lwip, can anyone maybe clarify how to close the gap for using lwip with ESP32? Maybe someone is willing to help out with a li...
by TheSub6
Wed Mar 28, 2018 2:59 pm
Forum: General Discussion
Topic: SK6812 RGBW LEDs flickering - RMT Driver
Replies: 10
Views: 17352

Re: SK6812 RGBW LEDs flickering - RMT Driver

Here is the code. Should light up the first LED full brightness on all channels. I would love to update all channel simultaneously, I have to dig deeper on that topic. Maybe I can postpone the SK6812 terminator in some way. /* // Std. C #include <stdint.h> #include <stdlib.h> #include <string.h> //F...
by TheSub6
Wed Mar 28, 2018 12:27 pm
Forum: General Discussion
Topic: SK6812 RGBW LEDs flickering - RMT Driver
Replies: 10
Views: 17352

Re: SK6812 RGBW LEDs flickering - RMT Driver

Now it works. :D It was a defective LED :roll: RGB is working great but the white LED was broken. Now with a new LED everything works... @Vader_Mester: The color order is GRBW. But the next issue is the white glow when the blue LED is on. I guess the phosphor in the white LED is UV/blue sensitive an...
by TheSub6
Wed Mar 21, 2018 3:20 pm
Forum: General Discussion
Topic: SK6812 RGBW LEDs flickering - RMT Driver
Replies: 10
Views: 17352

Re: SK6812 RGBW LEDs flickering - RMT Driver

I had the carrier enabled :roll: . Now with config.tx_config.carrier_en = 0; It seems to work stable. BUT... The colors are not as expected. Every bit seems to be at the right position. But i can't get the white LED to light up standalone. It lights up (not full brightness) when all the blue bits ar...
by TheSub6
Wed Mar 21, 2018 1:54 pm
Forum: General Discussion
Topic: SK6812 RGBW LEDs flickering - RMT Driver
Replies: 10
Views: 17352

Re: SK6812 RGBW LEDs flickering - RMT Driver

Thanks for your reply. Waveform is measured at DIN. I altered the timings, without effect (T0H -> 400 ns and T1H -> 700 ns) The overshoot is a bit high. I increased the inline resistor from 100 Ohm to 1.2 kOhm to get rid of the over voltage. Now I am always at less than 5 Volts. I am using a 74HCT24...
by TheSub6
Mon Mar 19, 2018 1:06 pm
Forum: General Discussion
Topic: SK6812 RGBW LEDs flickering - RMT Driver
Replies: 10
Views: 17352

SK6812 RGBW LEDs flickering - RMT Driver

Hi, using the RMT Driver I am trying to generate a signal for the SK6812 RGBW LEDs. My issue is that the LEDs are flickering in the desired color and almost unnoticeable changing colors, rather than staying at the same value. I started by manually programming the timings. The code is attached. Can a...