Heltec Wireless Tracker V2
ESP32-S3 development board with SX1262 LoRa (28dBm), UC6580 dual-frequency GNSS, 0.96" TFT display, solar charging, and Meshtastic/MeshCore support for GPS tracking and mesh networking.
$26.90
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Specifications
Components
Xtensa LX7 dual-core processor @ 240MHz with 8MB flash, 512KB SRAM, WiFi 802.11 b/g/n, BLE 5.0, and hardware cryptographic acceleration.
Semtech SX1262 long-range LoRa transceiver supporting 863-928MHz bands with -134dBm RX sensitivity, paired with KCT8103L PA for 28dBm TX power.
Unicore UC6580 GNSS chip with L1+L5 dual-frequency reception, supporting GPS, GLONASS, BDS, Galileo, NAVIC, and QZSS with 96 tracking channels and sub-1.5m accuracy.
Sitronix ST7735S TFT-LCD controller driving a 160x80 pixel color display via SPI interface at up to 40MHz.
Shanghai Consonance CN3165 linear battery charger IC with up to 1A charge current, solar panel input support, CC/CV/CT charging modes, and thermal regulation up to 130°C.
KCT8103L RF front-end module with integrated power amplifier (PA) and low noise amplifier (LNA), boosting LoRa TX power to 28dBm with 21dB LNA gain and 1.9dB noise figure.
Bus Interfaces
GPIO Map
Overview
The Heltec Wireless Tracker V2 is a compact, feature-rich development board designed for GPS tracking and LoRa mesh networking applications. Built around the ESP32-S3FN8 dual-core MCU, it integrates an SX1262 LoRa transceiver with a KCT8103L RF front-end module that delivers up to 28dBm transmit power for extended range, alongside the Unicore UC6580 dual-frequency GNSS receiver supporting GPS, GLONASS, BDS, Galileo, NAVIC, and QZSS constellations with sub-1.5m positioning accuracy.
The board features a 0.96-inch 160x80 TFT display driven by an ST7735S controller, dual SH1.25 connectors for lithium battery and solar panel, and integrated battery management via the CN3165 charger IC with overcharge protection and automatic USB/battery switching. Its LDS antenna design for both GNSS and 2.4GHz WiFi/BLE keeps the physical footprint remarkably small at just 52 x 25.4mm, while an IPEX 1.0 connector provides the option for an external LoRa antenna.
Firmware support is extensive, with official compatibility for Meshtastic, MeshCore, and LoRaWAN, plus full Arduino, ESP-IDF, PlatformIO, and MicroPython development. The board exposes dual 18-pin headers with 7 ADC channels, 7 touch inputs, 3 UARTs, 2 I2C buses, and 2 SPI buses, making it suitable for custom sensor integrations beyond its primary tracking and messaging use cases. Community adoption is strong, with ESPHome configurations available for Home Assistant integration and active Meshtastic firmware support.
Use Cases
7Asset Tracking
Tracking the location and status of physical assets like vehicles, packages, and equipment.
LoRa Mesh Networking
Building off-grid mesh communication networks using LoRa radio for text messaging, location sharing, and sensor data relay without cellular or internet infrastructure.
Meshtastic Mesh
Off-grid mesh communication using Meshtastic firmware over LoRa radio.
GPS Tracking
Location tracking and navigation using GNSS satellite receivers.
Pet Tracker
GPS-based tracker for monitoring the location and movement of pets, attached to a collar.
LoRaWAN Node
A LoRaWAN end device that transmits sensor data to a LoRaWAN gateway for long-range, low-power IoT applications.
GNSS Data Logger
Log GPS/GNSS location data with timestamps for route tracking, fleet management, and geofencing.
Resources
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