---
id: heltec
title: Heltec device
sidebar_label: Heltec
sidebar_position: 6
---

## WiFi LoRa 32 (V2) * Not Recommended - Support may be dropped

It continues to be a struggle to support this very old ESP32 chip, not officially supported in 1.3 / 2.0 and support may be dropped completely.

Using this device with a battery is not recommended.

- ESP32 - Wifi & Bluetooth
- SX127x - LoRa Transceiver
- Frequency options:
  - 433 MHz
  - 470-510 MHz
  - 863-870 MHz
  - 902-928 MHz
- Built in 0.96 inch OLED display
- U.FL antenna connector
- Reset and Program switches
- No GPS


- Firmware file: `firmware-heltec-1.x.x.bin`

[<img src="Heltec WiFi LoRa 32 (V2)" src="/img/hardware/heltec-v2.png" style={{zoom:'25%'}} />](/img/hardware/heltec-v2.png)

[<img src="Heltec WiFi LoRa 32 (V2) Pinouts" src="/img/hardware/heltec_v2_pinmap.png" style={{zoom:'25%'}} />](/img/hardware/heltec_v2_pinmap.png)

There are two versions of the Heltec (V2). Below is a picture highlighting the visual differences:

[<img src="Heltec WiFi LoRa 32 (V2)" src="/img/hardware/heltec_v2_vs_v21.png" style={{zoom:'25%'}} />](/img/hardware/heltec_v2_vs_v21.png)

- See [hardware update log](https://heltec-automation-docs.readthedocs.io/en/latest/esp32/wifi_lora_32/hardware_update_log.html) for more details
