All the test images are working fine here.
so long,
Hias
All the test images are working fine here.
so long,
Hias
So then it is an problem of the pi4 self?
thnx
Hard to tell, most likely though I'd guess it's an electrical connection problem. Just re-read the thread and you didn't mention if you used a 3.3V>5V level-shifter (eg 74HCT08 or 32) between the RPi and the LED strip. Without it operation will be borderline and it could be that you just were lucky it worked on the RPi3.
so long,
Hias
Hi,
maybe that could be the problem. But I also found topics on the hyperion site and people got it working without the level shifter.
Do you have an picture of the connection hoe you made the level shifter between the rpi and the led strip?
many thanks
I'm not using a level-shifter myself, I use a "Adalight" / Arduino to connect the LED strip. The Arduino outputs 5V signals so there's no problem to drive the WS2801 (which require a minimum of 4V for logic high input signals).
The 74HCT00 circuit on the hyperion wiki Supported hardware | Hyperion - Forum looks fine, if you build it yourself don't forget to connect +5V from the RPi to pin 14 and GND to pin 7 of the 74HCT00 - that small detail is missing in the schematic (buit their PCB looks OK).
so long,
Hias
Hi buddy,
do you have an picture of your setup? Just to see maybe to fix it also like your method.
Many thanks
Sorry, don't have a picture - the board is tucked behind my wall-mounted TV.
It's just an Arduino Pro Micro clone with the Adalight Ledstream sketch, connected to RPi via USB. There should be plenty of info on the 'net.
so long,
Hias
I understand you. And which led strip you are using with that sketch?
I will let you know if I buy the rpi4 again.
Many thanks
I've got a WS2801 strand with 50 LEDs, similar to this one 12mm Diffused Thin Digital RGB LED Pixels (Strand of 25) [WS2801] ID: 322 - $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits
so long,
Hias
Digitale RGB Ledstrip WS2801 - 32 LED - Zwarte PCB - 1M
So this strip I have now on my rpi3. Is this ws2801 strip also okay with the arduino uno and rpi4?
many thanks
It should work fine (all WS2801 LED strips should behave identically so should work).
so long,
Hias
Hi there,
Okay that sounds fine. And which sketch did you use on the arduino?
And what should be the settings at: hardware instead of ws2801?
And how did you connect the led strip to the arduino and pi then?
I think without jumper cables
Many thanks
Arduino sketch is on github ledstream.pde
Depending on which Arduino (clone) you use you may need to modify the source (see comments at the beginning) and some of the smaller/cheaper boards require you to solder in the 0.1" connectors yourself.
Just make sure you get an Arduino with Atmega 32u4 (this is the one with USB built-in, the older/other Arduinos with separate USB/serial chip won't work well as communication will be too slow).
In hypercon / hyperion.config.json set the type to "adalight" and port to "/dev/ttyACM0"
For other details about arduino stuff and the Adalight / ledstream sketch just search the net, there are tons of infos out there.
so long,
Hias
Hi,
i have an arduino uno clone with atmega 328p
is this okay?
And how do I solder it on the led strip the data cable which will go the the arduino power port?
many thanks
No, go for Atmega 32u4 only - the other ones without built-in USB will be a PITA
Just solder the connector pins to the RPi and then cable up the LED strip as usual (eg with DuPont wires).
so long,
Hias
Hi buddy,
US $2.71 8% Off | TZT UNO R3 Development Board ATmega328P CH340 CH340G For Arduino UNO R3 With Straight Pin Header
this one has usb right? Or is it not the correct usb?
and which connector pins should be to the pi then?
many thanks
No, as I wrote in posts 31 and 33 you need one with the Atmega 32U4, like this one Arduino Micro
Refer to Arduino docs for pin assignment.
so long,
Hias
Will be difficut then