Recent content by Thialf

I know, it's an old thread, but the solution is missing. PrinzEisenherz expected that his calculation takes place after exactly 1000ms. But >=1000 means, it could have been started later. And this time need to be considered: int samplinginterval = millis() - letzte_ausgabe; FanSpeed =...

https://github.com/chrisstaite/TeensyDmx just updated his library. TeensyLC is now working with it (and Teensyduino >=1.28)

https://github.com/chrisstaite/TeensyDmx just updated his library. TeensyLC is now working with it (and Teensyduino >=1.28)

A voltage divider after 7805 is not possible, because the current consumptions of the LEDs differs a lot. You can't get a constant voltage. My dirty hack is to power the first LED with a 1N4001 from 5V. Therfore it will get about 4.5V, which is low enough to work directly with the 3.3V Teensy...

oh thanks, I didn't recognize Port E. In my actual project I need 7 IRQ-pins, no luck here. But with another project I also liked to use the OctoWS2811 but with only 1 LED strip (I always run out of IOs ;). It's perfect, because I just can map the dma3 to Port E and only 2 data pins are visible...

the 740000 is because of the flickering. Even with good power supply and resistor after the 74HCT245, I got flickering at the end of the 240 LED strip: https://forum.pjrc.com/threads/23877-WS2812B-compatible-with-OctoWS2811-library?p=89794&viewfull=1#post89794 I first thought about moving 3&4...

that's an old thread, I know. But I had lots of flickering at the end of my 240x WS2812B strip. The flickering disappeared completly by setting the frequency from 800000Hz to 740000Hz. I recognized that FastLED with hardware SPI has lots of jitter, just like the OctoWS2811. They use shorter...

It's maybe too late, but here is my solution: https://forum.pjrc.com/threads/31717-OctoWS2811-and-CAN-bus?p=89689&viewfull=1#post89689

I had the same problem. I wanted to use FlexCAN + OctoWS2811 + SD-Card(with hardware-SPI) + attachInterrupt(Pin xy) But OctoWS2811 is excusivly using Pin 4, which can't be used by FlexCAN anymore. I modified the OctoWS2811 to use only the 8 Output pins. The DMA trigger is done with FTM0 timer...

It's possible, but I haven't tested it: https://forum.pjrc.com/threads/25588-OctoWS2811-flicker?p=47480&viewfull=1#post47480

maybe your: #define F_CPU 160000000 // AVR clock frequency in Hz, used by util/delay.h has too many zeros ;-) Nice, a atmega with 160MHz To get the assembler of an arduino-sketch, just do this: http://rcarduino.blogspot.de/2012/09/how-to-view-arduino-assembly.html Of course, arduino has some...