Mellow SB2040 CanBus board

[Manny]

I take your point, but we pay good earned money for that, it should work out of the box, not "in the near future /maybe / or maybe not"

My modest point of view. 

[Rbrt]

deleted

Edited April 14 by Rbrt
incorrect

[Rbrt]

OK, I looked at config again and found a typo (missing colon). All that needs to be changed is the pin callout. It is now working 100% Rainbow Barf and all. 

[neopixel sb_leds]
#pin: PB0
pin: SB2040:gpio12
#   The pin connected to the neopixel. This parameter must be provided.
chain_count: 10
.........

 

[Manny]

Well...

You are lucky, mine are not working, just a red logo one at startup, then off when i try to change color, all dead after, the rest of the functions are working 100%.

Tried all sorts of changes in the config file, no luck.

[Rbrt]

Well crap, it is inconsistent. Sometimes it works and other times it doesn't. Maybe the data speed is marginally too fast for the Neo Pixels. Need to put a scope on the data line. May get around to doing that. If I don't get Nozzle lights I am held up doing my Nozzle Camera project.

[tyllurius]

In my case  it turned out that it's something with the Neopixels itself (it's a set from Fysetc): I hooked up some other Neopixels (from which I know for sure they are WS2812B type) to my SB and, boom, they worked flawlessly. So, the setup itself is working. Strange, I had the Fysetc Neopixels connected to the Octopus directly without any problem. I will test some other RGBs on the SB2040, but for now I swapped the leds on the PCB and am happy about a lighten up Stealthburner 

[Manny]

I do have more leds from other source than Fisetech(which is the one not working), i'll try right now!

Thank you for the tip, that's interesting.

 

[Manny]

Update:

Leds are working properly, it is confirmed that the Fisetech are the not compatible ones for some unknown reason, it's mindblowing.

Well... A big thank you for the suggestion, we never stop learning here.

Cheers

[tyllurius]

11 hours ago, Manny said:

Update:

Leds are working properly, it is confirmed that the Fisetech are the not compatible ones for some unknown reason, it's mindblowing.

Well... A big thank you for the suggestion, we never stop learning here.

Cheers

Pleased to help you! I already assumed that in both our cases the type of leds is the cause, because some other guy had the same issue.
The fysetc Neopixels seem to be SK6812 type, so maybe it's something with this type of RGB led. I ordered some Sk6812 types to countercheck...

[Rbrt]

I have a mix of WS2812s and my Nozzle LEDs are SK6812s. Maybe that part of the Neopixel Driver code is not correctly implemented in the SB2040. Works fine from the Octopus port.

 

[tyllurius]

8 hours ago, Rbrt said:

Maybe that part of the Neopixel Driver code is not correctly implemented in the SB2040. 

That's exactly what I guess. I checked the signal from both (Octopus and SB2040) with an logic analyzer and it's definitely not the same.