HELTEC Wireless Stick Lite(V3) is a streamlined IoT development board designed to cater to users who don't require an OLED display, making it a perfect alternative to the WiFi LoRa 32. Powered by the ESP32-S3FN8 dual-core processor and SX1262 LoRa transceiver, it provides seamless connectivity with Wi-Fi, Bluetooth 5 (LE), and LoRaWAN protocol.
🔧 HTIT-WSL is a streamlined IoT development board designed to cater to users who don't require an OLED display, making it a perfect alternative to the 📶 WiFi LoRa 32. Powered by the ⚙️ ESP32-S3FN8 dual-core processor and 📡 SX1262 LoRa transceiver, it provides seamless connectivity with 🌐 Wi-Fi, 📲 Bluetooth 5 (LE), and 📡 LoRaWAN protocol.
This board features a 🔌 Type-C USB interface for easy power management, debugging, and firmware updates, along with a robust 🔋 battery management system supporting 3.7V lithium batteries. With its 🌙 low-power design (sleep current ≤800μA), excellent RF performance, and full 🛠️ Arduino compatibility, the HTIT-WSL simplifies IoT development for both beginners and professionals, enabling quick solution validation and application deployment 🚀.
Main Features of HELTEC Wireless Stick Lite(V3)
- 🧠 Microprocessor: ESP32-S3FN8 (Xtensa® 32-bit LX7 dual core processor, five stage pipeline rack Structure, main frequency up to 240MHz).
- 📡 SX1262 LoRa node chip.
- 🔌 Type-C USB interface with a complete voltage regulator, ESD protection, short circuit protection, RF shielding, and other protection.
- 🔋 Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB / battery power automatic switching).
- 🌐 Integrated WiFi, LoRa, Bluetooth three network connections, onboard Wi-Fi, Bluetooth dedicated 2.4GHz metal spring antenna, reserved IPEX (U.FL) interface for LoRa.
- 🖥️ Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing.
- 🛠️ Support the Arduino development environment.
- 🌙 With good RF circuit design and basic low-power design (sleep current ≤800uA), it is convenient for IoT application vendors to quickly verify solutions and deploy applications.
📊 Specifications of HELTEC Wireless Stick Lite(V3)
| 🔧 Parameters | 📘 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 Resource | 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 | 58.08 × 22.6 × 8.2 mm |
| 🔗 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 |
📄 Description
📍 Pin Map
✨ Highlight
❓ FAQ
If you want to use the new ESP32-S3 processor and the SX1262 LoRa chip, you may need to use new libraries that support them. You should check that the libraries you are using are compatible with these new components.
As far as my experience with the Wireless Stick Lite is concerned, the only library I had to change when switching from V1 to V3 was the LoRa library. The Sandeep Mistry LoRa library that I used earlier doesn’t work with the new SX1262 LoRa chip. To make my code work with the V3, I had to migrate to the Heltec LoRaWan_APP library. This was a true migration because the two libraries don’t use identical calls.
Imagine that you want to measure the moisture in your field. Although it is not far from your house, it probably doesn’t have Wi-Fi coverage. So, you can build a sensor node with an ESP32 and a moisture sensor, that sends the moisture readings once or twice a day to another ESP32 using LoRa. The later ESP32 has access to Wi-Fi, and it can run a web server that displays the moisture readings. This is just an example that illustrates how you can use the LoRa technology in your ESP32 projects.
Refer to this link: How to Use License — main latest documentation (heltec.org)
📚 Docs & Resource
- 🧰 [Resource] — Heltec ESP32 framework and lib 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 without selecting any accessories is as follows:
| 📦 Item | 🔢 Quantity |
|---|---|
| 📡 Wireless Stick Lite | x1 |
| 📶 LoRa Antenna | x1 |
| 🔌 SH1.25×2 Battery Connector | x1 |
| 🧾 Pin Map Sticker | x1 |