Product Overview
The LILYGO T-BeamSUPREME is a versatile development board designed for Meshtastic applications, integrating an ESP32-S3 microcontroller with LoRa, GPS, WiFi, and Bluetooth capabilities. It comes pre-flashed with Meshtastic firmware for immediate use.
- MCU: ESP32-S3FN8 Dual-core LX7 microprocessor for efficient processing.
- Firmware: Pre-burned with Meshtastic Firmware for out-of-the-box mesh networking.
- Core Components: Composed of ESP32-S3, LoRa SX1262, and L76K GPS chip for robust communication and positioning.
- Connectivity: Integrated WiFi and Bluetooth for flexible connectivity options.
- Display: Features a 1.3-inch SH1106 OLED for clear information display.

Detailed diagram illustrating the MCU, wireless connectivity, display specifications, and LoRa SX1262 module features of the LILYGO T-BeamSUPREME.
Components Included
The LILYGO T-BeamSUPREME package includes the essential components to get started with your development board.
- Blu-ray (This item is listed in the 'whats_in_the_box' section of the product data. Please note that this may be a data entry error and typically refers to a Blu-ray disc or player, which is unlikely for a development board. Users should verify actual contents upon receipt.)

Image showing the LILYGO T-BeamSUPREME development board, antenna, and various small accessories included in the kit.
Setup
Follow these steps for initial setup of your LILYGO T-BeamSUPREME development board.
- Connect Antenna: Securely attach the provided antenna to the SMA connector on the board. Ensure it is finger-tight to prevent signal loss.
- Insert Battery: If using battery power, insert a compatible 18650 battery into the battery holder on the underside of the board, observing correct polarity (+/-).
- Initial Power/Connection: Connect the board to your computer using a USB-C cable. This will power the device and allow for firmware flashing or configuration.
- Firmware Installation (Meshtastic): The device comes pre-flashed with Meshtastic firmware. For updates or custom firmware, refer to the official Meshtastic documentation or LILYGO's GitHub repository.
- GPS Module: The L76K GPS module is integrated. Ensure clear line of sight to the sky for optimal GPS signal acquisition.

A close-up view of the LILYGO T-BeamSUPREME board, highlighting the antenna connection point. Ensure the antenna is securely fastened.

The LILYGO T-BeamSUPREME development board shown with its integrated 18650 battery holder and attached antenna.
Official LILYGO video demonstrating the process of installing Meshtastic firmware onto a LILYGO T-Echo device. The steps are generally applicable to other LILYGO T-Beam devices.
Official LILYGO video explaining how the T-Beam device connects to the Helium platform, detailing the necessary configuration steps.
Operating Instructions
The LILYGO T-BeamSUPREME, with Meshtastic firmware, enables off-grid communication and data transmission. Here are general operating guidelines:
- Power On: Once the battery is inserted or USB power is connected, the device should power on automatically. The OLED display will show Meshtastic status.
- Meshtastic App Connection: Use the Meshtastic mobile application (available for Android and iOS) to connect to your T-BeamSUPREME via Bluetooth. This allows you to send/receive messages and configure device settings.
- Sending Messages: Through the Meshtastic app, you can compose and send text messages to other Meshtastic nodes within range. The messages will route through the mesh network.
- GPS Tracking: The integrated L76K GPS module provides location data. This data can be transmitted over the Meshtastic network for tracking purposes.
- Monitoring: The OLED display provides real-time information such as signal strength, battery level, and received messages.
Official Meshology video demonstrating an ESP32 LoRa V3 N32 device used in a DIY door monitoring project. This illustrates a practical application of the development board's capabilities.
Official LILYGO video showcasing the TTGO LoRa32 V2.1_1.6 Version 915Mhz ESP32 LoRa Module in operation, demonstrating its functionality and display.
Technical Specifications
| MCU | ESP32-S3FN8 Dual-core LX7 microprocessor |
| Wireless Type | Bluetooth, Wi-Fi (2.4 GHz) |
| LoRa Module | SX1262 (915Mhz) |
| GPS Module | L76K |
| Display | 1.3-inch SH1106 OLED (128x64 resolution) |
| RAM | LPDDR3 |
| Memory Storage Capacity | 8 MB |
| Item Weight | 3.84 ounces |
| Package Dimensions | 7.4 x 4.17 x 2.56 inches |

Detailed diagram showing the pinout, main components, and various interfaces of the LILYGO T-BeamSUPREME development board.

Comprehensive pinmap for the LILYGO T-BEAM-S3Core, detailing connections for ESP32-S3, LoRa, GPS, PMU, and antenna ports.

Comparison table highlighting the properties, positioning support, GNSS parallelism, update rate, and oscillator differences between L76K and Ublox MAX-M10S-00B GNSS modules.
Troubleshooting
If you encounter issues with your LILYGO T-BeamSUPREME, consider the following common troubleshooting steps:
- No Power: Ensure the USB-C cable is securely connected and providing power, or that the 18650 battery is correctly inserted with proper polarity and charged.
- No OLED Display: Verify that the OLED display is correctly connected to the board. If the display is not lighting up, check power connections and ensure the firmware supports the specific display model.
- No LoRa/Meshtastic Connectivity: Check that the antenna is securely attached. Ensure both transmitting and receiving devices are configured to the same frequency band (e.g., 915Mhz) and channel settings. Verify that the Meshtastic firmware is correctly installed and updated.
- GPS Signal Issues: Ensure the device has a clear, unobstructed view of the sky. GPS signal acquisition can take several minutes, especially on first use or after a long period of inactivity.
- Bluetooth Connection Problems: Ensure Bluetooth is enabled on your mobile device and the Meshtastic app has the necessary permissions. Try restarting both the T-BeamSUPREME and your mobile device.
- Fragile Components: Handle the board with care. Consider using a protective case, especially if the device will be used in outdoor or rugged environments, to prevent damage to exposed components.
Warranty and Support
For warranty information, technical support, or further inquiries regarding your LILYGO T-BeamSUPREME, please refer to the following resources:
- Manufacturer Support: Contact LILYGO directly for product-specific support.
- Online Resources: Visit the official LILYGO GitHub repository for documentation, code examples, and community support: github.com/Xinyuan-LilyGO/LilyGo-LoRa-Series.
- Meshtastic Community: For Meshtastic-specific questions and community support, visit the official Meshtastic website and forums.





