HELTEC Wireless Stick Lite ESP32S3 SX1262 Meshtastic LoRaWAN 915Mhz V3
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HELTEC Wireless Stick Lite ESP32S3 SX1262 Meshtastic LoRaWAN 915Mhz V3
The HTIT-WSL is a highly optimized IoT development board, meticulously designed for projects where an OLED display is not required, serving as an ideal and cost-effective alternative to the WiFi LoRa 32. This powerful board is driven by the ESP32-S3FN8 dual-core processor and features an integrated SX1262 LoRa transceiver, ensuring seamless and robust connectivity across Wi-Fi, Bluetooth 5 (LE), and the LoRaWAN protocol.
Equipped with a convenient Type-C USB interface, the HTIT-WSL simplifies power management, debugging, and firmware updates. Its robust battery management system supports 3.7V lithium batteries, complete with charge/discharge management, overcharge protection, and real-time power detection. With an exceptional low-power design (sleep current ≤800μA), outstanding RF performance, and full Arduino compatibility, the HTIT-WSL accelerates IoT development, enabling rapid solution validation and deployment for both beginners and experienced professionals.
Key Features
- Powerful Microprocessor: ESP32-S3FN8 (Xtensa® 32-bit LX7 dual-core processor, 240MHz).
- Integrated LoRa: Features the high-performance SX1262 LoRa node chip.
- Robust USB-C Interface: With complete voltage regulation, ESD protection, short-circuit protection, and RF shielding.
- Advanced Battery Management: Onboard SH1.25-2 battery interface, supporting 3.7V lithium batteries with charge/discharge management, overcharge protection, and automatic USB/battery power switching.
- Triple Network Connectivity: Integrated WiFi, LoRa, and Bluetooth, with onboard 2.4GHz metal spring antenna for Wi-Fi/Bluetooth and a reserved IPEX (U.FL) interface for LoRa.
- Convenient Debugging: Integrated CP2102 USB to serial chip for easy program downloading and debugging.
- Arduino Compatible: Fully supports the Arduino development environment for streamlined programming.
- Ultra-Low Power: Features a low-power design with sleep current ≤800μA, ideal for energy-efficient IoT applications.
Detailed Specifications
| Parameter | Description |
|---|---|
| Master Chip | ESP32-S3FN8 (Xtensa® 32-bit LX7 Dual-Core Processor) |
| LoRa Chipset | SX1262 |
| USB to Serial Chip | CP2102 |
| Frequency | 470~510MHz, 863~928MHz |
| Max. TX Power | 21dB ± 1dB |
| Max. Receiving Sensitivity | -134dBm |
| Wi-Fi | 802.11 b/g/n, up to 150Mbps |
| Bluetooth LE | Bluetooth 5, Bluetooth Mesh |
| Hardware Resources | 7*ADC1 + 9*ADC2; 8*Touch; 3*UART; 2*I2C; 2*SPI; etc. |
| Memory | 384KB ROM; 512KB SRAM; 16KB RTC SRAM; 8MB SiP Flash |
| Battery | 3.7V lithium battery power supply and charging |
| Operating Temperature | -20 ~ 70 ℃ |
| Dimensions | 58.08mm * 22.6mm * 8.2mm |
| Interface | Type-C USB; 2*1.25 lithium battery interface; LoRa ANT (IPEX1.0); 2.4G ANT (IPEX1.0); 2*20*2.54 Header Pin |
Pin Map
Highlights
- Arduino-Compatible: Extensively optimized to support Arduino®, enabling stable LoRaWAN protocol operation perfectly.
- Universal USB Type-C: Features a Type-C interface for power, firmware downloads, and debugging, enhancing development convenience.
Frequently Asked Questions (FAQ)
To utilize the new ESP32-S3 processor and SX1262 LoRa chip, you will likely need updated libraries that support these components. It's crucial to verify compatibility with your existing libraries. Based on experience with the Wireless Stick Lite, the primary change when transitioning from V1 to V3 was the LoRa library. The older Sandeep Mistry LoRa library is not compatible with the SX1262 LoRa chip, necessitating a migration to the Heltec LoRaWAN_APP library, which involves adapting to different function calls.
Imagine monitoring soil moisture in a distant garden plot that lacks Wi-Fi coverage. You could deploy an ESP32 sensor node with a moisture sensor to transmit readings via LoRa once or twice daily to another ESP32 within Wi-Fi range. This second ESP32 could then host a web server to display the moisture data. This illustrates how LoRa technology can bridge connectivity gaps in your ESP32 projects.
Refer to this link: How to Use License — main latest documentation (heltec.org)
Documentation & Resources
- [Resource] — Heltec ESP32 framework and library installation
- [Resource] — Hardware Update Logs
- [Resource] — Datasheet
- [Resource] — Schematic Diagram
- [Resource] — User Manual Document
- [Resource] — Heltec LoRaWAN test server based on SnapEmu
Packing List
The default packing list includes:
| Item | Quantity |
|---|---|
| Wireless Stick Lite | x1 |
| LoRa Antenna | x1 |
| SH1.25×2 Battery Connector | x1 |
| Pin Map Sticker | x1 |
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Effective Date: September 16th, 2025
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