Welcome to the Roku LT Operating System open source distribution.

You may view the LT Open Source instructional videos and read the LT Open Source announcement to learn more.

Before building LT OS for ESP32, ensure the pyserial Python module is installed. The bundled esptool.py requires it; otherwise you may see errors about pyserial not being installed. On Debian/Ubuntu Linux, install it with:

% sudo apt install python3-serial

On Fedora/RHEL/CentOS, install it with:

% sudo dnf install python3-pyserial

On macOS, install it with:

% pip3 install pyserial

On Windows, install it with:

% py -m pip install pyserial

To build LT OS for ESP32:

% cd /path-to-lt-sdk/lt-firmware-example
% source build-setup.sh
% espshell
% build
% make quiet

To flash, clean:

% make FlashFirmware
% make clean

To perform first-time initialization of all partitions of the flash (build first):

% LT_FLASH=all make FlashFirmware

To build LT OS for Linux:

% cd /path-to-lt-sdk/lt-firmware-example
% source build-setup.sh
% linuxshell
% build
% make quiet

To run Linux build:

% bin
% export LT_LIBRARY_PATH=.
% sudo ./ltrun LTSystemShell

For reference only, and not an endorsement, some example ESP32 development boards are:

• Espressif ESP32-DevKitC
• Adafruit HUZZAH32 - ESP32 Feather Board (pre-soldered)
• SparkFun ESP32 Thing
• Amazon search for ESP32 camera boards

Availability, pricing, and features may vary by seller and region.