The LILYGO® T-Impulse LoRa Wristband S78G is an advanced and feature-rich wearable device that combines various cutting-edge technologies to offer a wide range of functionalities. With its powerful MCU, LoRa transceiver, GNSS module, and other onboard components, this wristband is designed to provide a seamless and efficient user experience. 

Package Includes:

• 1 X The LILYGO® T-Impulse LoRa Wristband S78G
• 1 X USB Cable

Features and Specifications:

• MCU: The S78G wristband is driven by the STM32L073Z microcontroller unit (MCU), which integrates the LORA and GNSS modules. The STM32L073Z is known for its low power consumption and high performance, ensuring optimal efficiency and responsiveness.
• Host Interfaces: The wristband utilizes the UART (Universal Asynchronous Receiver-Transmitter) interface, enabling seamless communication with other devices or systems.
• Memory Capacity: With 192kb of Flash memory, the wristband offers ample space for storing program code, configurations, and other data. Additionally, it features 20kb of SRAM for efficient data processing and temporary storage.
• LORA Frequency Band: The wristband supports three different LORA frequency bands: 433Mhz, 868Mhz, and 915Mhz. These frequency options provide flexibility for long-range wireless communication, ensuring reliable connectivity across various environments.
• GNSS Frequency Band: Equipped with GPS, GLONASS, and BEIDOU support, the wristband covers multiple GNSS frequency bands. This enables accurate positioning, navigation, and tracking functionalities, allowing users to explore their surroundings confidently.
• Onboard Functions: The wristband includes battery power detection, enabling real-time monitoring of the battery level for optimal power management. Additionally, it features a comfortable silicone strap that ensures a secure and comfortable fit during extended wear.
• SX1278 Low-Power LORA Transceiver: The wristband is equipped with the SX1278 LORA transceiver, renowned for its low power consumption and exceptional sensitivity. With high sensitivity of up to -137 dBm, it can reliably receive weak signals, ensuring robust long-range communication capabilities. The transceiver also supports a programmable bit rate of up to 37500 bps, offering flexibility for different data transfer requirements.
• CXD5603GF Ultra-Low Power GNSS Module: The integrated CXD5603GF GNSS module provides ultra-low power consumption, making it energy-efficient for extended usage. It supports the SBAS (Satellite-Based Augmentation System) and QZSS (Quasi-Zenith Satellite System) protocols, guaranteeing reliable and accurate positioning information.
• Touch Button: The wristband incorporates a TTP223 touch button, allowing users to interact with the device effortlessly. The touch-sensitive button provides a user-friendly interface for easy control and navigation.
• Display Type: Featuring an OLED display with the SSD1306 controller, the wristband offers a crisp and vibrant visual experience. The OLED technology ensures high contrast, excellent visibility in various lighting conditions, and power efficiency.
• Battery Capacity: With a 200mAh battery, the wristband provides sufficient power for extended usage periods. The capacity ensures reliable operation throughout the day, reducing the need for frequent recharging.

Documents:

[GitHub]  T-Impulse LoRa Wristband

[An Initial Version Of Wiki Page ] T-Impulse LoRa Wristband

{A Pre-Release of SoftRF Firmware Binary (DFU File) for T-Impulse Which Can be Downloaded to the Devices} T-Impulse LoRa Wristband