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Hmm. I've tried a few different hubs and computers now with identical results. I'm thinking 7 teensies might just be too many in this configuration.

The teensies have been cut in a way that prevents power from traveling over the USB line. The teensies run off the same power supplies as the light strips. Only data goes through the usb lines.

I've tried runing two of the suspect teensies directly from my machine's motherboard and typically even fewer teensies work. I had been assuming driving them all from one hub would be ideal but I do not know enough about USB communication protocols to be sure. I wouldn't think power would be...

Very frustrating. I guess ill keep searching. When I view the properties of mine, it is identified as being two multi tt hubs and they consume very little bandwidth when the screen is running. The only reason I suspect the hub is because two of the three teensies running off of the three port...

In that case, can anyone recommend a specific model of usb hub? I bought this one specifically for this screen and it was advertised as meeting your requirements. Also, I couldn't resist a quick hack so I tried threading the send commands. It didn't make anything noticeably worse but the issue...

Thanks for the tip. Renaming com ports was getting tedious. Does anyone have any other thoughts as to how to get all the teensies to react? I was hoping I wouldnt have to heavily modify the video example to get 7 teensies working.

Fair enough. Thanks for the help.

Yeah, I have noticed windows capacity to mix up com ports. I have had to change their names several dozen times now. I have not tried threading the com sends but that does make a lot of sense. I've never dabbled with threading using processing but ill certainly give it a try.

Thanks for the quick reply. I am using windows 7, all 7 serial devices are recognized by the OS, and processing is running and reporting no errors. I added some command line outputs to verify that each teensy is connected and gave correct size/offset information. They all seem to do this...

Hello everyone, I have constructed a 56x119 ws 2811 screen and am using octo video example. I'm using 7 teensies to run the thing, each accounting for 8 strips of 119. Unfortunately, only 5 of the 7 teensies seem to function. Which 5 are working does not seem consistent. Does anyone have any...