SparkFun
OctoWS2811 Adapter for Teensy 3.x & 4.x
· MPN: PRT-28372
Build large LED displays with a Teensy using this OctoWS2811 adapter board. It connects Teensy 3.2 through 4.1 boards to thousands of WS2811, WS2812 or NeoPi...
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Build large LED displays with a Teensy using this OctoWS2811 adapter board. It connects Teensy 3.2 through 4.1 boards to thousands of WS2811, WS2812 or NeoPixel-compatible LEDs, with support for driving up to eight strips in parallel via the high-speed OctoWS2811 Library.
The adapter acts as an active signal buffer, using a 74HCT245 buffer chip to boost the Teensy's 3.3V logic signals to the 5V level required by most LED strips. This helps provide reliable signalling for larger installations and longer cable runs.
Dual RJ-45 Ethernet jacks work with onboard 100Ω impedance-matching resistors and standard CAT6 Ethernet cable for clean, high-bandwidth signal routing with minimal cross-talk. The RJ-45 connections also make LED arrays easy to connect and disconnect from the main controller.
Teensy 3.2 and 4.0 boards can mount directly on top of the adapter using standard stacking headers or a header/socket pair. Larger Teensy 3.5, 3.6 and 4.1 boards are also compatible when raised with double-insulator pins and sockets so the board clears the RJ-45 connectors.
This adapter is suited to art installations, stage props, light shows and other projects that need many addressable LEDs driven from a Teensy.
Jargon buster
Plain-language definitions for the technical terms used above.
- Headers
- Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
- Impedance
- Impedance is the total opposition a component or circuit presents to alternating current, measured in ohms, combining resistance with frequency-dependent reactance. It appears in many contexts, such as matching a speaker's impedance (for example 4 ohm or 8 ohm) to an amplifier or the input and output impedance of signal circuits, and a correct match helps avoid weak signals, distortion or damage.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- NeoPixel
- A type of addressable LED system where colour data is sent along a single digital data line from one LED or controller to the next. Compatibility matters because the timing and signal format must match for the lights or driver board to respond correctly.
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