MicroPython remote control: mpremote

The mpremote command line tool provides an integrated set of utilities to remotely interact with and automate a MicroPython device over a serial connection.

To use mpremote install it via pip:

$ pip install mpremote

The simplest way to use this tool is just by invoking it without any arguments:


This command automatically detects and connects to the first available serial device and provides an interactive REPL. Serial ports are opened in exclusive mode, so running a second (or third, etc) instance of mpremote will connect to subsequent serial devices, if any are available.


For REPL access, running mpremote without any arguments is usually all that is needed. mpremote also supports a set of commands given at the command line which will perform various actions on remote MicroPython devices.

The full list of supported commands are:

  • connect to a specified device via a device-name shortcut:

    $ mpremote <device-shortcut>
  • connect to specified device via name:

    $ mpremote connect <device>

    <device> may be one of:

    • list: list available devices

    • auto: connect to the first available device

    • id:<serial>: connect to the device with USB serial number <serial> (the second entry in the output from the connect list command)

    • port:<path>: connect to the device with the given path

    • any valid device name/path, to connect to that device

  • disconnect current device:

    $ mpremote disconnect
  • enter the REPL on the connected device:

    $ mpremote repl [options]

    Options are:

    • --capture <file>, to capture output of the REPL session to the given file

    • --inject-code <string>, to specify characters to inject at the REPL when Ctrl-J is pressed

    • --inject-file <file>, to specify a file to inject at the REPL when Ctrl-K is pressed

  • evaluate and print the result of a Python expression:

    $ mpremote eval <string>
  • execute the given Python code:

    $ mpremote exec <string>
  • run a script from the local filesystem:

    $ mpremote run <file>
  • execute filesystem commands on the device:

    $ mpremote fs <command>

    <command> may be:

    • cat <file..> to show the contents of a file or files on the device

    • ls to list the current directory

    • ls <dirs...> to list the given directories

    • cp [-r] <src...> <dest> to copy files; use “:” as a prefix to specify a file on the device

    • rm <src...> to remove files on the device

    • mkdir <dirs...> to create directories on the device

    • rmdir <dirs...> to remove directories on the device

  • mount the local directory on the remote device:

    $ mpremote mount <local-dir>

Multiple commands can be specified and they will be run sequentially. Connection and disconnection will be done automatically at the start and end of the execution of the tool, if such commands are not explicitly given. Automatic connection will search for the first available serial device. If no action is specified then the REPL will be entered.


Shortcuts can be defined using the macro system. Built-in shortcuts are:

- ``devs``: list available devices (shortcut for ``connect list``)
  • a0, a1, a2, a3: connect to /dev/ttyACM?

  • u0, u1, u2, u3: connect to /dev/ttyUSB?

  • c0, c1, c2, c3: connect to COM?

  • cat, ls, cp, rm, mkdir, rmdir, df: filesystem commands

  • reset: reset the device

  • bootloader: make the device enter its bootloader

Any user configuration, including user-defined shortcuts, can be placed in the file .config/mpremote/config.py. For example:

commands = {
    "c33": "connect id:334D335C3138",
    "bl": "bootloader",
    "double x=4": "eval x*2",  # x is an argument, with default 4
    "wl_scan": ["exec", """
import network
wl = network.WLAN()
for ap in wl.scan():
    "test": ["mount", ".", "exec", "import test"],



mpremote a1

mpremote connect /dev/ttyUSB0 repl

mpremote ls

mpremote a1 ls

mpremote exec "import micropython; micropython.mem_info()"

mpremote eval 1/2 eval 3/4

mpremote mount .

mpremote mount . exec "import local_script"

mpremote ls

mpremote cat boot.py

mpremote cp :main.py .

mpremote cp main.py :

mpremote cp -r dir/ :