BLUART USB to Serial and RS485 Adapter


Product Description

The BLUART USB to Serial and RS485 Adapter is a tiny circuit board capable of interfacing via USB with devices that use serial UART or RS485 communications.

UARTs (more commonly known as serial ports) are used on a wide range of devices such as Arduino microcontrollers, subsea sensors, and our Ping Sonar. A UART uses separate transmit (TX) and receive (RX) signal lines, which allows full-duplexcommunication.

RS485 is a variation of serial communication intended for communication over long cable lengths. RS485 uses a differential signal on a twisted pair of wires, which protects the signal integrity over hundreds of meters of cable length. The same wires are used for both transmitting and receiving, so you can only do one at a time. This is called half-duplex. Many subsea sensors and tools including sonars, water chemistry sensors, and manipulators use RS485 communication.

The BLUART has JST-GH connector ports and through-hole options for either serial UART or RS485 connections. Only one connection type may be used at a time. The indicator lights signal for adequate power and when receiving and/or transmitting data.

The BLUART is open-source and the schematic is freely available.

Marine Distribution & Consuling offers the full Blue Robotics product range.

Please contact us for special requests or should you not find the product you are looking for!


  • 1 x BLUART USB to Serial and RS485 Adapter
  • 1 x 6-pin female header pin socket
  • 1 x 4-pin female header pin socket


Parameter Value
Maximum Supply Voltage 5.0 volts
Communication Protocols Serial UART to USB
  RS485 to USB
Length 25 mm 0.98 in
Width 16 mm 0.63 in
Height 10 mm 0.39 in
Weight in Air 2.2 g 0.07 oz

Revision History

29 January 2019

  • R1 – Initial Release


 Ping Installation Guide for the BlueROV2


 BLUART USB to Serial and RS485 Adapter Schematic


 Blue Robotics Forum – Sensors


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