OCTOWS2811: clone signal pins

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Alecmd

Alecmd

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Hi guys,
I'm designing a project with Teensy and OCTOWS2811 library. After tested the original goal of the library to create a led monitor now I want to have three or more led stripes that have the same behavior. Can I clone the signal cable and connect it to different led strips? In this way I can control a group of stripes connected to one pin having the same led control signal. Does it work?

Thanks!
 
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It should work.

If the wires are short (only a few inches), and large LED currents don't flow through the ground wire between Teensy and the LEDs, it probably makes no difference how you connect things.

If the wires are "long", you might need to connect each with its own resistor. Of course, use a 74HCT245 buffer chip to drive those 3 resistors, which then connect to the three signal wires. Run a ground wire as close as reasonably possible to each signal wire, ideally twisted together.
 
Alecmd said:
Any help here?
Click to expand...
I have a solid reliable product (pixel poi) using cloned data pins, but these use LPD6803 leds. There have been no issues with the integrity of the data being sent from a single pin to two chains of leds. I had a test rig for pixel poi using tennsy 3 and 2 * 60 led ws2811 strips, with two stips coming from a single data pin (pin2), with no data integrity issues. For wiring, the +ve and Gnd were common for the two strips (external battery source), and the data lines were short and matched wire. The cloning worked, but the ws2811 did not perfrom well for POV (nothing to do with cloning the data line though).
 
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