Boardoza ESP32-S3 LoRa GPS Tracker 868 MHz Evaluation Board
The Boardoza LoRa GPS Tracker EVM 868 MHz R1.0 is a battery-powered wireless tracking and environmental-monitoring platform combining LoRa long-range communication, multi-constellation GNSS positioning, Wi-Fi, Bluetooth Low Energy and temperature/humidity sensing on a single board.
The board is controlled by an ESP32-S3-MINI-1-N8 module featuring a dual-core processor, integrated 2.4 GHz Wi-Fi, Bluetooth Low Energy and 8 MB embedded flash memory. The ESP32-S3 manages GNSS data acquisition, LoRa communication, environmental sensing, power control, battery monitoring and USB communication.
Location information is provided by the Quectel LC86G multi-GNSS receiver. The LC86G supports GPS, GLONASS, Galileo, BeiDou and QZSS satellite systems and communicates with the ESP32-S3 through a UART interface. The board provides both an integrated GNSS antenna and an external IPEX antenna connection.
Long-range wireless communication is provided by an intended Ebyte E22-900M22S LoRa module based on the Semtech SX1262 transceiver. It operates across the 850–930 MHz frequency range and supports 868 MHz and 915 MHz applications. The LoRa module communicates with the ESP32-S3 through SPI and provides a maximum RF output power of 22 dBm.
The board can be powered through USB-C or an onboard 18650 lithium-ion battery. An MCP73832 linear charger provides battery charging, while a TPS63070 buck-boost converter generates a stable 3.3 V system supply. Battery voltage can be monitored by the ESP32-S3 through an onboard resistor-divider circuit.
LoRa communication range depends on antenna installation, data rate and propagation conditions. No fixed range is guaranteed in buildings, vehicles or urban environments.
Key Features
- ESP32-S3-MINI-1-N8 main controller
- Dual-core Xtensa LX7 processor operating up to 240 MHz
- Integrated 2.4 GHz Wi-Fi
- Bluetooth Low Energy support
- 8 MB embedded SPI flash
- Quectel LC86G multi-constellation GNSS receiver
- GPS, GLONASS, Galileo, BeiDou and QZSS support
- Integrated GNSS patch antenna
- External GNSS antenna connection through IPEX
- Intended E22-900M22S LoRa transceiver
- 850–930 MHz LoRa operating range
- Suitable for 868 MHz and 915 MHz applications
- Maximum LoRa output power of 22 dBm
- SPI communication with the LoRa module
- TH09C temperature and humidity sensor
- USB-C power and native USB communication
- Onboard 18650 battery holder
- MCP73832 lithium-ion battery charger
- TPS63070 buck-boost 3.3 V power supply
- Battery-voltage measurement
- Separate software-controlled LoRa and GNSS power rails
- Boot, reset and power-control buttons
- User-programmable status LED
- Exposed I²C, SPI and GPIO headers
- LoRa antenna connection through an SMA connector
Technical Specifications
- Board model
- B-LORA-GPS-TRACKER-EVM R1.0
- Main controller
- ESP32-S3-MINI-1-N8
- CPU
- Dual-core Xtensa LX7
- Maximum CPU frequency
- 240 MHz
- Embedded flash
- 8 MB
- Embedded PSRAM
- None on the N8 version
- Wireless Connectivity
- 2.4 GHz Wi-Fi and Bluetooth LE
- GNSS module
- Quectel LC86G
- Supported GNSS systems
- GPS, GLONASS, Galileo, BDS and QZSS
- GNSS interface
- UART
- GNSS tracking sensitivity
- Up to -166 dBm
- GNSS acquisition sensitivity
- Up to -147 dBm
- Intended LoRa module
- Ebyte E22-900M22S
- LoRa transceiver
- Semtech SX1262
- LoRa frequency range
- 850–930 MHz
- Target operating frequency
- 868 MHz
- Maximum LoRa output power
- 22 dBm, approximately 160 mW
- LoRa interface
- SPI
- LoRa receiver sensitivity
- Up to -147 dBm
- Temperature/humidity sensor
- TH09C
- Sensor interface
- I²C
- USB connector
- USB Type-C
- Battery type
- Single-cell 18650 Li-ion
- Nominal battery voltage
- 3.7 V
- Maximum battery voltage
- 4.2 V
- Battery charger
- MCP73832
- Configured charge current
- Approximately 500 mA
- System regulator
- TPS63070 buck-boost converter
- System voltage
- 3.3 V
- Battery measurement
- ESP32-S3 ADC input
- LoRa antenna connector
- SMA
- GNSS external antenna connector
- IPEX
- Expansion interfaces
- I²C, SPI and GPIO
- Board Dimensions
- 91.29 x 37.11 mm
Support
For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.