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This adaptor board connects Teensy 3.1 to thousands of LEDs using the OctoWS2811 Library.
The adaptor features a 74HCT245 buffer chip and 100 ohm impedance matching resistors. CAT6 Ethernet cable is used from this board to the LED strips. CAT6 cable is designed for very high bandwidth, minimal cross-talk between twisted pairs, and 100 ohm impedance, for a very high quality signal. The RJ-45 network jacks allow your LED array to be easily disconnected from the electronics.
Four self-threading screws are supplied with the OctoWS2811 Adaptor board.
Teensy 3.1 is added on top of the adaptor using stacking header pins, or a header and socket pair if you wish to be able to remove the Teensy 3.1 board.
The eight LED outputs are sent on two CAT6 Ethernet cables.
Signals with CAT6 T568B Termination:
(most CAT6 cables sold in the USA are this type)
| Top RJ-45 Jack | | Bottom RJ-45 Jack |
|---|
| Wire | Signal | | Wire | Signal |
|---|
| Orange | LED Strip #1 Data | | Orange | LED Strip #5 Data |
| White/Orange | LED Strip #1 Ground | | White/Orange | LED Strip #5 Ground |
| Blue | LED Strip #2 Data | | Blue | LED Strip #6 Data |
| White/Blue | LED Strip #2 Ground | | White/Blue | LED Strip #6 Ground |
| Green | LED Strip #3 Data | | Green | LED Strip #7 Data |
| White/Green | LED Strip #3 Ground | | White/Green | LED Strip #7 Ground |
| Brown | LED Strip #4 Data | | Brown | LED Strip #8 Data |
| White/Brown | LED Strip #4 Ground | | White/Brown | LED Strip #8 Ground |
Signals with CAT6 T568A Termination:
| Top RJ-45 Jack | | Bottom RJ-45 Jack |
|---|
| Wire | Signal | | Wire | Signal |
|---|
| Green | LED Strip #1 Data | | Green | LED Strip #5 Data |
| White/Green | LED Strip #1 Ground | | White/Green | LED Strip #5 Ground |
| Blue | LED Strip #2 Data | | Blue | LED Strip #6 Data |
| White/Blue | LED Strip #2 Ground | | White/Blue | LED Strip #6 Ground |
| Orange | LED Strip #3 Data | | Orange | LED Strip #7 Data |
| White/Orange | LED Strip #3 Ground | | White/Orange | LED Strip #7 Ground |
| Brown | LED Strip #4 Data | | Brown | LED Strip #8 Data |
| White/Brown | LED Strip #4 Ground | | White/Brown | LED Strip #8 Ground |
To prepare the data cables, simply cut a CAT6 Ethernet cable in half and carefully strip away the outer jacket to expose long enough sections of the twisted pairs to reach all of your LED strips. Each twisted pair feeds the data input and ground of a single strip.
Note: For best results, the LED power supply ground and Teensy signal ground should meet at or
near the LED strip signal inputs. The LED power supplies should be located at close as possible to the LED strips and connected with large diameter wires, to minimize voltage loss due to high current flow.
If Teensy 3.1 will be powered by the LED strip power supply, 5V and ground wires should be run together
with the CAT6 cables and connected to the +5V and GND pads on the adaptor boards. The 5.08 mm spacing
terminal block may be soldered to the adaptor board, or the wires can be soldered directly. Of course,
the VIN-VUSB pads on Teensy 3.1 should be cut apart if Teensy 3.1 receives external power, to avoid
feeding the LED power back into your computer.
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