# Heltec Wireless Tracker > ESP32-S3 development board with integrated SX1262 LoRa transceiver, UC6580 dual-frequency GNSS receiver, and 0.96-inch TFT display for IoT asset tracking, Meshtastic mesh networking, and LoRaWAN applications. ## Quick Facts - **Brand:** Heltec Automation - **Price:** ~$22.9 - **CPU:** Xtensa LX7 dual-core @ 240MHz, FPU, hardware crypto (AES/SHA) - **CPU Architecture:** Xtensa LX7 - **CPU Cores:** 2 - **RAM:** 512KB SRAM - **Flash:** 8MB - **USB:** USB-C 2.0 - **Power:** 5V via USB-C,3.7V LiPo - **Operating Voltage:** 3.3V - **Operating Temp:** -20°C to +70°C - **Dimensions:** 65.48 × 28.06 × 13.52mm - **Weight:** 55g - **Antenna:** U.FL/IPEX (LoRa,GPS) - **SD Card:** No - **Display:** 0.96" TFT LCD 160×80 ## Connectivity - **Wifi:** 802.11 b/g/n - **Bluetooth:** BLE 5.0 - **Lora:** SX1262 470-510, 863-928MHz ## Use Cases - asset-tracking - gps-tracking - meshtastic-mesh - lora-mesh-networking - outdoor-navigation - vehicle-tracking - pet-tracker - livestock-tracking - fleet-management - emergency-communication ## Components - **ESP32-S3FN8** (mcu): Xtensa LX7 dual-core processor at 240MHz with 8MB flash, 512KB SRAM, WiFi 802.11 b/g/n and Bluetooth LE 5.0. Features hardware crypto acceleration (AES/SHA), 12-bit SAR ADC, touch sensing, and ULP co-processor for deep sleep operation. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32-s3_datasheet_en.pdf&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) - **SX1262** (radio): Semtech SX1262 LoRa transceiver supporting 150-960MHz ISM bands with +22dBm transmit power and -134dBm receive sensitivity. Supports both LoRa modulation for LPWAN and (G)FSK for legacy protocols. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn.sparkfun.com%2Fassets%2F6%2Fb%2F5%2F1%2F4%2FSX1262_datasheet.pdf&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) - **UC6580** (gps): Unicore UC6580 GNSS receiver with 96 tracking channels supporting GPS, GLONASS, BDS, Galileo, NAVIC, and QZSS. L1+L5 dual-frequency capability delivers sub-1.5m positioning accuracy with advanced multi-path mitigation. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fen.unicore.com%2Fuploads%2Ffile%2FUC6580x-00_Datasheet_EN_R1.5.pdf&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) - **ST7735** (display-driver): Sitronix ST7735 TFT controller driving the onboard 0.96-inch 160x80 pixel color LCD display via SPI interface. Supports 262K colors with built-in display RAM. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.displayfuture.com%2FDisplay%2Fdatasheet%2Fcontroller%2FST7735.pdf&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) ## Protocols - **SPI (LoRa)** (SPI0): SCK: GPIO9, MOSI: GPIO10, MISO: GPIO11, CS: GPIO8 - **SPI (Display)** (SPI1): SCLK: GPIO41, MOSI: GPIO42, CS: GPIO38, DC: GPIO40, RST: GPIO39 - **UART (Console)** (UART0): TX: GPIO43, RX: GPIO44 - **UART (GNSS)** (UART2): TX: GPIO34, RX: GPIO33 - **UART (General)** (UART1): TX: GPIO17, RX: GPIO18 - **I2C**: SDA: GPIO41, SCL: GPIO42 - **PWM** - **ADC** ## GPIO Map | Pin | Name | Type | Functions | |-----|------|------|-----------| | GPIO0 | User Button (BOOT) | — | digital-input, digital-output, pwm, touch, rtc, strapping | | GPIO1 | ADC1_CH0 | — | digital-input, digital-output, adc, touch, pwm, rtc | | GPIO2 | ADC1_CH1 | — | digital-input, digital-output, adc, touch, pwm, rtc | | GPIO3 | Vext Control (GNSS + Display Power) | — | digital-input, digital-output, adc, touch, pwm, rtc | | GPIO4 | ADC1_CH3 | — | digital-input, digital-output, adc, touch, pwm, rtc | | GPIO5 | ADC1_CH4 | — | digital-input, digital-output, adc, touch, pwm, rtc | | GPIO6 | ADC1_CH5 | — | digital-input, digital-output, adc, touch, pwm, rtc | | GPIO7 | ADC1_CH6 | — | digital-input, digital-output, adc, touch, pwm, rtc | | GPIO8 | LoRa NSS (SPI CS) | SPI | digital-input, digital-output, adc, touch, pwm | | GPIO9 | LoRa SCK | SPI | digital-input, digital-output, adc, touch, pwm | | GPIO10 | LoRa MOSI | SPI | digital-input, digital-output, adc, touch, pwm | | GPIO11 | LoRa MISO | SPI | digital-input, digital-output, adc, touch, pwm | | GPIO12 | LoRa RST | — | digital-input, digital-output, adc, touch, pwm | | GPIO13 | LoRa Busy | — | digital-input, digital-output, adc, touch, pwm | | GPIO14 | LoRa DIO1 | — | digital-input, digital-output, adc, touch, pwm | | GPIO17 | UART1 TX | UART | digital-input, digital-output, pwm | | GPIO18 | UART1 RX / LED | UART | digital-input, digital-output, adc, pwm | | GPIO21 | Display Backlight | — | digital-input, digital-output, pwm | | GPIO33 | GNSS UART2 RX | UART | digital-input, digital-output, pwm | | GPIO34 | GNSS UART2 TX | UART | digital-input, digital-output, pwm | | GPIO37 | ADC Control | — | digital-input, digital-output, pwm | | GPIO38 | Display CS | SPI | digital-input, digital-output, pwm | | GPIO39 | Display RST | — | digital-input, digital-output, pwm | | GPIO40 | Display DC | — | digital-input, digital-output, pwm | | GPIO41 | Display SCLK / I2C SDA | SPI | digital-input, digital-output, pwm | | GPIO42 | Display MOSI / I2C SCL | SPI | digital-input, digital-output, pwm | | GPIO43 | UART0 TX (Console) | UART | digital-input, digital-output, pwm | | GPIO44 | UART0 RX (Console) | UART | digital-input, digital-output, pwm | ## Description ## Overview The Heltec Wireless Tracker is a compact development board combining an ESP32-S3FN8 microcontroller with a Semtech SX1262 LoRa transceiver and a Unicore UC6580 dual-frequency GNSS receiver, making it a complete solution for building GPS-enabled IoT tracking devices. The board supports multi-constellation positioning (GPS, GLONASS, BDS, Galileo, NAVIC, QZSS) with L1+L5 dual-frequency capability for sub-1.5m accuracy, and can transmit position data wirelessly via LoRa, WiFi, or Bluetooth LE. With its 0.96-inch TFT color display, onboard lithium battery management, and IPEX antenna connectors for both LoRa and GNSS, the Wireless Tracker is designed for portable and field-deployed tracking applications. It is one of the most popular boards in the Meshtastic community for building off-grid mesh communication nodes with GPS, and also supports LoRaWAN for integration with IoT gateway infrastructure. The board exposes user-accessible GPIOs through dual 18-pin headers, supporting 3 UARTs, 2 I2C buses, 2 SPI interfaces, and multiple ADC and touch-capable pins. The ESP32-S3's native USB support enables direct firmware flashing without an external programmer, while the Heltec Arduino library and Zephyr RTOS board support make development straightforward. ## Where to Buy - [Heltec Store](https://openhardware.directory/r?to=https%3A%2F%2Fheltec.org%2Fproject%2Fwireless-tracker%2F&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) — 22.90 - [Amazon](https://openhardware.directory/r?to=https%3A%2F%2Fwww.amazon.com%2FHeltec-Meshtastic-Wireless-Development-902-928MHz%2Fdp%2FB0D1QBSLKS&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) — 22.90 - [AliExpress](https://openhardware.directory/r?to=https%3A%2F%2Fwww.aliexpress.us%2Fitem%2F3256806779722665.html&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) — 18.99 ## Resources - [product](https://openhardware.directory/r?to=https%3A%2F%2Fheltec.org%2Fproject%2Fwireless-tracker%2F&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) - [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FHeltec-Aaron-Lee%2FWiFi_Kit_series&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) - [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.heltec.org%2Fdocs%2Fdevices%2Fopen-source-hardware%2Fesp32-series%2Flora-32%2Fwireless-tracker%2F&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) - [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fresource.heltec.cn%2Fdownload%2FWireless_Tracker%2FWireless%2520Tracker1.1.pdf&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) - [schematics](https://openhardware.directory/r?to=https%3A%2F%2Fresource.heltec.cn%2Fdownload%2FWireless_Tracker%2FWireless_Tacker1.1%2FHTIT-Tracker_V0.5.pdf&ref=openhardware.directory&product=heltec-wireless-tracker&source=md-export) ## Tags `esp32-s3`, `lora`, `gps`, `gnss`, `meshtastic`, `lorawan`, `tracker`, `iot`, `sx1262`, `uc6580` ## Images ![Heltec Wireless Tracker](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-wireless-tracker/35973796e1c3.png) ![Heltec Wireless Tracker](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-wireless-tracker/8c440d75821b.webp) ![Heltec Wireless Tracker](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-wireless-tracker/cf41500247f6.png) ![Heltec Wireless Tracker](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-wireless-tracker/f12f085c7be3.png) ![Heltec Wireless Tracker](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-wireless-tracker/0a69c23acd4e.png) ![Heltec Wireless Tracker](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-wireless-tracker/4989b3525dec.png) > **Battery Powered:** LiPo 3.7V --- [View full device page](https://openhardware.directory/devices/heltec-wireless-tracker)