Heltec WiFi LoRa 32 (V3), ESP32-S3 + SX1262 LoRa Node, 915 MHz
Heltec WiFi LoRa 32 (V3), ESP32-S3 + SX1262 LoRa Node, 915 MHz
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Description ▼
Note: This is the Heltec WiFi LoRa 32 (V3) for the US band (902–928 MHz), without plastic shell. Compatible with Meshtastic, MeshCore, and LoRaWAN.
The WiFi LoRa 32 (V3) (also called Heltec V3) is a compact IoT development board powered by the ESP32-S3FN8 MCU and SX1262 LoRa node chip. It integrates LoRa, Wi-Fi, and Bluetooth, plus an onboard 0.96-inch OLED display and lithium battery management — a ready-to-use node for mesh networking, LoRaWAN, and custom IoT projects.
KEY FEATURES
- ESP32-S3FN8 MCU: Xtensa® 32-bit LX7 dual-core processor, up to 240 MHz, with Wi-Fi and Bluetooth 5 (LE).
- SX1262 LoRa node chip for long-range wireless communication (902–928 MHz / US915).
- Onboard 0.96-inch 128×64 OLED display for status, debug info, and battery indication.
- Type-C USB with voltage regulation, ESD protection, short-circuit protection, and RF shielding.
- Integrated lithium battery management: SH1.25-2 battery interface, charge/discharge management, overcharge protection, battery detection, and USB/battery auto-switching.
- Onboard 2.4 GHz metal spring antenna for Wi-Fi/Bluetooth; IPEX (U.FL) connector for LoRa antenna.
- CP2102 USB-to-serial chip for firmware download and serial debugging.
- Development support: Arduino, PlatformIO, ESP-IDF, and MicroPython.
- Widely used in open-source long-range projects such as Meshtastic and MeshCore.
SPECIFICATIONS
| Category | Details |
| Product Name | WiFi LoRa 32 (V3) — 902–928 MHz, no plastic shell |
| MCU | ESP32-S3FN8 (Xtensa® 32-bit LX7 dual-core, up to 240 MHz) |
| LoRa Chip | SX1262 |
| USB to Serial | CP2102 |
| LoRa Frequency | 902–928 MHz (US915 / commonly called 915 MHz) |
| Max TX Power | 21 ±1 dBm |
| Max Receive Sensitivity | −134 dBm @ SF12, BW=125 kHz |
| Wi-Fi | 802.11 b/g/n, up to 150 Mbps |
| Bluetooth | Bluetooth 5 (LE) |
| Memory | 384 KB ROM; 512 KB SRAM; 16 KB RTC SRAM; 8 MB SiP Flash |
| Display | 0.96-inch 128×64 OLED |
| Interfaces | Type-C USB; SH1.25-2 lithium battery interface; LoRa ANT (IPEX 1.0); 2×18×2.54 mm header pins |
| Battery | 3.7V lithium battery power and charging (battery not included) |
| Operating Temperature | −20 ~ 70 ℃ |
| Board Dimensions | 50.2 × 25.5 × 10.2 mm |
| Product Weight | 35 g |
| Plastic Shell | Not included (board-only configuration) |
| Compatibility | Meshtastic, MeshCore, LoRaWAN, Arduino, PlatformIO, ESP-IDF, MicroPython |
WHAT'S INCLUDED
- 1 × WiFi LoRa 32 (V3) board (902–928 MHz, no plastic shell)
- 1 × LoRa Antenna
- 1 × SH1.25×2 Battery Connector
- 2 × 2.54×18 Header Pins
NOTES
- This product is the 902–928 MHz band version without the optional plastic shell.
- Battery is not included — use a compatible 3.7V Li-Ion / Li-Po with an SH1.25×2 connector.
- Board ships without Meshtastic pre-flashed; flash Meshtastic, MeshCore, or LoRaWAN with standard ESP32 toolchains.
- Wi-Fi and Bluetooth cannot be used at the same time on this board (no external PSRAM).
- Ensure USB power can supply at least ~600 mA of stable 5V if you see unexpected reboots.
- Docs: Heltec WiFi LoRa 32 V3 wiki, product page.
VIDEOS
Official Heltec overview of the WiFi LoRa 32 V3 with Meshtastic.
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SKU:U0820
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