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Heltec V2

Official Discontinued

Heltec Automation

Classic ESP32 + SX1276/SX1278 LoRa development board with integrated 0.96-inch OLED, Wi-Fi, and BLE. Micro USB and CP2102 serial, SH1.25 battery connector with charge management, and IPEX LoRa antenna. Phased out — Heltec recommends V3 or newer for new projects.

~$18 approx.· 2026-06

Product page ↗ Datasheet ↗

References: mesh-sn.de ↗

MCU: ESP32 (original)
Radio: SX1276
Display: 0.96″ OLED
GPS: None
Battery: External
Connectivity: USB, BLE, Wi-Fi

Roles

CompanionRepeaterRoom ServerStandalone Ui

Transports

bleusb

Other variants

Compare all 4 →

V3 esp32-s3· Semtech SX1262

V4 esp32-s3· Semtech SX1262

V4 + Expansion Kit (Touch) esp32-s3· Semtech SX1262

Hardware

Radio

Technology: LORA
Chip: Semtech SX1276 ↗
Frequency: 433 MHz,470 MHz,868 MHz,915 MHz
TX power: 19 dBm
TX efficiency: 0.64 mW/mA
Antenna: IPEX-1.0

Processor

Family: Espressif ESP32 series ↗
Model: Espressif ESP32 (original) ↗
Architecture: Xtensa LX
Flash: 8 MB
RAM: 520 KB

Display

Type: OLED
Controller: SSD1306
Size: 0.96″
Resolution: 128 × 64
Colors: Monochrome

Battery

Battery: External connector
Chemistry: LiPo
Built-in: No
Charging: Yes
Connector: SH1.25-2

Power

Power draw (idle): 50 mA
Power draw (TX): 125 mA

Expansion

Connector: Header 2.54 ×2 · 18 pins

Physical

LEDs: White user LED
Dimensions: 51 × 25.5 × 10.6 mm
Board area: 13 cm²
Board volume: 13.8 cm³
Weight: 35 g
Shell: None
Operating temp: -20 to 70 °C

Connectivity

USB: Micro-USB
USB bridge: CP2102
USB modes: Power, Serial, Flashing
Bluetooth: BLE 4.2
Wi-Fi: 802.11 b/g/n

Details

Kind: Dev Board
Lifecycle: Discontinued
Revision: 2
Family: heltec-wifi-lora-32
Firmware support: 2
Catalog completeness: 95 %
Also known as: Heltec WiFi LoRa 32 V2, WiFi LoRa 32 V2

Firmware support

Firmware	Type	Target	Status	Notes
MeshCore (Official)	Official	heltec_v2	✓ Supported
MeshCoreNG	Fork	heltec_v2	✓ Supported