TinyDesk developer preview

A mouse-operated desktop running on an ESP32, displayed in your terminal.
Drag and resize windows, browse files, edit and save text, and use the
embedded shell. MQTT and Modbus apps connect the desktop to real projects.

This release is a developer preview: expect rough edges, and please report
what breaks.

New in 0.3.1

• ssl in the PC shell program: 0.3.0's tdsh_host (Linux) and
  tdsh_host.exe (Windows) were built without TLS, so py had no ssl
  there (no HTTPS, MQTT over TLS or upip). They have it now, and a
  release build stops if it would leave it out. The firmware and the
  desktop programs had it already; nothing else changed.

New in 0.3.0

The public API is frozen in this release as the candidate for 1.0
(STABILITY.md): please report anything that should change before 1.0
promises it.

• Two new boards: the Elecrow CrowPanel 7.0 (the desktop on its
  800×480 touch screen, kiosk apps) and the Arduino Nano ESP32 (the
  desktop on its USB-C port; a community port, contributed and tested by
  @aquasock, #15). Both are in the web installer and in every release.
• Network in Python: socket, ssl (TLS 1.2, server certificates
  checked against the firmware's CA bundle), requests, umqtt.simple
  and umqtt.robust, a websocket client, aiohttp, and a read-only
  network module for the connection's state (#13).
• Python packages and virtual environments: upip install, uninstall,
  list and freeze from micropython.org's index, GitHub or GitLab;
  venv, activate, deactivate (the prompt shows the environment).
• MicroPython lives in TinyDesk Shell now, so the Shell edition has
  py too, and TinyDesk adds its own modules on top.
• Search (Alt+S or Win+S) finds apps, files and folders as you type;
  a letter in Files, lists, the desktop and the start menu jumps to the
  next item starting with it.
• New flash layouts, meant to stay for 1.x: the 16 MB boards have two
  4 MB app slots and a 7.8 MB /fs, the ESP32-C6 two 3 MB slots and
  1.8 MB, the 4 MB ESP32 a 3 MB app (the same layout as TinyDesk Shell's,
  so it switches editions and keeps its files); the boards with room get a
  64 KB NVS for accounts and Wi-Fi networks and a crash-dump slot.
• App Builder apps: tdapp, the library App Builder's apps share, is
  built into the firmware; App Builder can export small packages that use it.
• Remote Desktop: hover works, and no stray characters at the login.
• API stability: the public C headers, Python modules and board keys
  are recorded and checked by the tests; TD_VERSION_MAJOR, _MINOR,
  _PATCH.

Updating from 0.2.0: Software Update installs 0.3.0 and keeps
everything, but keeps the old flash layout. For the larger app slots and
/fs, install from the web installer with Erase device: users, Wi-Fi
networks and files then start fresh, so copy off what you need first. The
4 MB ESP32 and the CrowPanel have no Software Update: install again
(without erasing, /fs keeps its files).

Earlier: the ESP32-S3, MicroPython with machine and tdui windows, and the Editor for Python (0.2.0); nano with UTF-8 text, peek and poke, and script
memory limits for small boards (0.1.6); the new home at github.com/tinydesk-project, update
information that can move, and only root changes the network policy
(0.1.5); Software Update offers to save built-in pins before
an official update, non-ASCII names line up, long command lines wrap
(0.1.4); official updates in Software Update and fixes for boards
without PSRAM (0.1.3); the SD card at /sd and in Files (0.1.2);
ping -c, MQTT over TLS in the PC programs, and tdsh.exe for Windows.

Install

• ESP boards, from the browser: https://tinydesk-project.github.io/install/
  (Chrome or Edge on a computer). Pick the edition and your exact board.
• Open the board in the browser: https://tinydesk-project.github.io/console/
  (a real terminal with mouse support; the installer's own Logs & Console
  cannot show the desktop).
• Without the browser: each *-factory.bin below is flashed at offset 0
  with esptool; see the installer page for the commands.
• PC programs: tinydesk-desktop-windows-x64.zip and
  tinydesk-shell-windows-x64.zip (Windows 10 or later, run them in Windows
  Terminal), tinydesk-desktop-linux-x86_64.tar.gz and
  tinydesk-shell-linux-x86_64.tar.gz (x86_64, built on Ubuntu 22.04).

Check the files against SHA256SUMS.txt. The firmware is not signed.
Factory flashing can erase user data: back up an existing board first.

Before connecting

Use a UTF-8 terminal with ANSI/VT cursor control and xterm mouse reporting,
or the web terminal above. The ESP32-C6 and the Nano ESP32 use their
built-in USB port (any speed); the classic ESP32, the ESP32-S3 (its
USB-UART port) and the CrowPanel 7.0 (its USB-C port; the desktop is on
the touch screen) use 921600 baud in the Desktop edition and 115200 in the
Shell edition. On the local console, run passwd as root (initial password:
TinyDesk). Remote access is blocked until that password changes. Telnet
starts disabled; enable it explicitly in Network only on a trusted network.
It is unencrypted and root-only because it takes over the existing desktop.
SSH provides a separate encrypted shell, not the windowed desktop (the 4 MB
ESP32 Desktop build has no SSH server).

Physical password recovery is unavailable after a Telnet takeover until the
board reboots. Remote takeover is refused while physical recovery is active.

Choose the exact board

Measured on our boards with this firmware (About → Free RAM, idle desktop
just after start-up, before Wi-Fi):

What is in this preview

• Desktop: overlapping windows (move, resize, minimise, maximise, full
  screen), taskbar, start menu, desktop icons, drag and drop, copy and paste
  with the PC; Dark theme by default; the screen follows the terminal's size.
• Apps: Terminal (TinyDesk Shell), Files, Editor, Network, MQTT (TLS),
  Modbus TCP/RTU with a TCP server, System Monitor, Task Manager, Log Viewer,
  Settings, Software Update (OTA with rollback), About.
• Shell scripts (.tdsh): variables, if/while/for, functions, pipes
  and redirection; right-click → Run on the desktop.
• Python scripts (MicroPython): py, pins and buses with machine,
  desktop windows with tdui, and the Editor's Python mode.
• Two editions: TinyDesk Desktop, and TinyDesk Shell on its own.
• Security: physical recovery uses a transport trust policy, not just shell
  task identity; Telnet is opt-in; Telnet, SSH and FTP reject the factory
  password.
• PC programs: the Windows desktop follows Windows Terminal when it is
  resized or maximised, and its shell has ifconfig, ping, date, cal
  and tz.
• Board pins come from a configuration file (board command), not from
  the code.
• Tests gate release builds; every release starts as a draft pre-release.

Known issues

• Python on the 4 MB ESP32: without PSRAM, a script gets about 21 KB
  of RAM before Wi-Fi and about 16 KB with Wi-Fi connected: enough for
  small scripts and plain sockets, not for TLS (https://, wss://).
• SSH on the ESP32-C6: ssh start refuses with "insufficient internal
  RAM" on the ESP32-C6 (it has done so since 0.1.0). A fix is ready and
  tested and comes in a later release. The other boards with SSH are not
  affected.

Licences

TinyDesk and TinyDesk Shell are MIT. The firmware images also contain
third-party code under its own licence: wolfSSH and wolfSSL (GPLv3) for the
SSH/SFTP server, so the firmware as a whole is distributed under the GPLv3;
MicroPython (MIT, Copyright (c) 2013-2026 Damien P. George) for the
py command, whose SHA-256 code from lib/crypto-algorithms is public
domain; and from micropython-lib (MIT) the frozen requests, ssl,
umqtt, aiohttp and mip. The source archive has every licence text:
LICENSE, third_party/tdsh/THIRD_PARTY_LICENSES.md,
third_party/tdsh/third_party/micropython/LICENSE and
third_party/tdsh/licenses/micropython-lib-LICENSE.txt. The PC programs
include theirs.