Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.


GND = Pin 1, RST = Pin 6



The Lobaro USB configuration adapter connects the configuration serial uart of our hardware to a PC. It is useful for:

  • Sensor initial configuration, e.g. network parameters
  • Viewing firmware log/debug diagnostic output
  • Firmware updates
  • Powering some of our devices (Boot and Reset must be disconnected to use as USB power supply)

using our free Lobaro Maintenance Tool PC software.

titleWire orientation

The blue wire is not consistent the RST/RTS pin(1) and may be inverted on some adapters, e.g. being the GND wire pin(6). Check the orientation of the adapter with the picture above to determinate the actual pin ordering and do not simply rely on the wire color coding alone!

titleUSB Driver

The CP2102 USB driver needs to be installed before using it.

Download CP2102 Driver Download

(Choose CP210x Windows Drivers v6.7.6)

Hardware Connection (LoRaWAN Sensors)

The USB adapter uses a six-wire JST-ZH series connector for attaching to Lobaro hardware at the config connector.

  • Boot0 of Lobaro sensors is connected to DTR line of the PC uart
  • Reset (active low) of Lobaro sensors is connected to RTS line of the PC uart

Normally the handling of these uart control is done automatically by the Lobaro PC tool.

When using an alternative uart terminal tool (e.g. HTERM) make sure you setup the RTS and DTR lines correctly or simply cut the DTR/RTS wires from the USB adapter if the reset and/or bootloader functions are not needed.

Default UART Configuration

The default 8E1 UART configuration that is used by all Lobaro devices on the "Config" port:

Baud Rate115200
Stop Bits1
Data Bits8

DTR control line

  • Low / true => Run Firmware after Reset (Default since BOOT0 has internal pull-down)
  • High / false => Run Bootloader after Reset

RTS control line

  • High / false => Run Firmware / Bootloader (Default since RESET has internal pull-up)
  • Low / true => Chip in RESET mode (not running)

Adapter Schematic

Table of Contents