WsMax

preliminary datasheet

product type

  • two-piece inline WS281x data extender
  • differential transport over 3-pin XLR DMX cable
  • designed for longer and more robust WS281x links

system architecture

WsMax consists of two dedicated units:

  • transmitter unit
  • receiver unit

The transmitter converts WS281x single-ended data to a differential signal. The receiver converts the differential signal back to WS281x data.

signal transport

  • transport principle: RS-485-style differential signaling
  • cable type: DMX-grade twisted pair, nominal 120 ohm
  • link connector type: 3-pin XLR
  • line termination: 120 ohm at transmitter and receiver side

electrical interface

  • transceiver class: half-duplex RS-485/RS-422
  • transceiver supply range: 4.75 to 5.25 V
  • transceiver signaling capability: up to 2.5 Mbit/s
  • receiver threshold window: -200 mV to +200 mV
  • receiver common-mode range: -7 V to +12 V
  • nominal operating voltage: 5 V DC per unit
  • data path: unidirectional, controller to strip
  • intended signal family: WS281x-style one-wire data

maximum ratings

  • supply pin, absolute maximum: -0.3 V to +12 V
  • bus pins A/B, absolute maximum: -8 V to +12.5 V
  • logic pins, absolute maximum: -0.3 V to VCC +0.3 V

ws2811 payload compatibility

  • data format: one-wire NRZ stream
  • typical payload: 24 bit per pixel, GRB order, 8 bit per channel
  • supported stream rates: 400 kbit/s and 800 kbit/s

connectors

transmitter side:

  • JST-SM 3-pin female
  • XLR 3-pin male

receiver side:

  • JST-SM 3-pin male
  • XLR 3-pin female

pin assignment

JST-SM side:

  • pin 1: +5 V
  • pin 2: DATA
  • pin 3: GND

XLR side:

  • pin 1: GND or shield reference
  • pin 2: DATA-
  • pin 3: DATA+

wire color note:

  • wire colors on JST pigtails can vary by supplier
  • verify pin functions before final installation

pinout reference images:

performance

  • designed for long cable runs compared to direct WS281x wiring
  • supported link length: up to 1000 m
  • achievable range depends on cable quality and installation conditions
  • practical link length depends on controller timing, cable quality, grounding, and EMI conditions
  • long-run installations should be validated on site before production use

mechanical

  • inline adapter format for direct cable integration
  • compact assembly intended for field wiring and retrofit use

operating conditions

  • indoor dry-use design
  • avoid direct moisture, conductive dust, and mechanical over-stress

package contents

  • 1x WsMax transmitter unit
  • 1x WsMax receiver unit
  • quick wiring sheet

notice

Specifications and features may change without prior notice.