meshtastic/docs/hardware/devices/heltec/index.mdx

---
id: heltec
title: HELTEC® LoRa 32
sidebar_label: HELTEC® LoRa 32
sidebar_position: 5
---

import Tabs from "@theme/Tabs";
import TabItem from "@theme/TabItem";

<Tabs
groupId="heltec"
defaultValue="v3"
values={[
{label: 'LoRa32 V2.1', value: 'v2.1'},
{label: 'LoRa32 V3', value:'v3'},
{label: 'Wireless Stick Lite V3', value:'Wireless Stick Lite V3'},
{label: 'Wireless Tracker', value: 'tracker'},
{label: 'Wireless Paper', value: 'paper'}
]}>
<TabItem value="v2.1">

:::warning
Not recommended because of design issues! Support is being phased out. Use V3 in new projects.
:::

- **MCU:**
  - ESP32 (WiFi & Bluetooth)
- **LoRa Transceiver:**
  - Semtech SX127x
- **Frequency Options:**
  - 433 MHz
  - 868 MHz
  - 915 MHz
- **Connectors:**
  - Micro USB
  - Antenna:
    - U.FL/IPEX antenna connector for LoRa

## Features

- Built in 0.96 inch OLED display
- User and Reset Buttons
- No GPS

## Resources

- Firmware file: `firmware-heltec-v2.1-X.X.X.xxxxxxx.bin`

</TabItem>
<TabItem value="v3">

:::info
This device may have issues charging a connected battery if utilizing a USB-C to USB-C cable. It's recommended to use a USB-A to USB-C cable.
:::

- **MCU:**
  - ESP32-S3FN8 (WiFi & Bluetooth)
- **LoRa Transceiver:**
  - Semtech SX1262
- **Frequency Options:**
  - 433 MHz
  - 470 - 510 MHz
  - 863 - 870 MHz
  - 902 - 928 MHz
- **Connectors:**
  - USB-C
  - Antenna:
    - Dedicated 2.4 GHz metal spring antenna for WiFi/Bluetooth
    - U.FL/IPEX antenna connector for LoRa

## Features

- Built in 0.96 inch OLED display
- User and Reset Buttons
- No GPS

### Pin Map

![HTIT-WSL_V3_PIN_MAP](/img/hardware/HTIT-WB32LA(F)_V3.png)

Image Source: [Heltec](https://resource.heltec.cn/download/WiFi_LoRa32_V3/HTIT-WB32LA(F)_V3.png)

## Resources

- Firmware file: `firmware-heltec-v3-X.X.X.xxxxxxx.bin`
- Purchase link: [Heltec](https://heltec.org/project/wifi-lora-32-v3/)
- Purchase link: [AliExpress](https://www.aliexpress.us/item/3256805256690400.html)

</TabItem>
<TabItem value="Wireless Stick Lite V3">

:::info
This device may have issues charging a connected battery if utilizing a USB-C to USB-C cable. It's recommended to use a USB-A to USB-C cable.
:::

- **MCU:**
  - ESP32-S3FN8 (WiFi & Bluetooth)
- **LoRa Transceiver:**
  - Semtech SX1262
- **Frequency Options:**
  - 433 MHz
  - 470 - 510 MHz
  - 863 - 870 MHz
  - 902 - 928 MHz
- **Connectors:**
  - USB-C
  - Antenna:
    - Dedicated 2.4 GHz stamped metal antenna for WiFi/Bluetooth
    - U.FL/IPEX antenna connector for LoRa

## Features

- No display.
- User and Reset Buttons
- Additional GPIO availability
- No GPS

### Meshtastic I2C Definitions
- SCL: GPIO47
- SDA: GPIO48

### Pin Map

![HTIT-WSL_V3_PIN_MAP](/img/hardware/HTIT-WSL_V3_PIN_MAP.png)

Image Source: [Heltec](https://resource.heltec.cn/download/Wireless_Stick_Lite_V3/HTIT-WSL_V3.png)

## Resources

- Firmware file: `firmware-heltec-wsl-v3-X.X.X.xxxxxxx.bin`
- Purchase link: [Heltec](https://heltec.org/project/wireless-stick-lite-v2/)
- Purchase link: [AliExpress](https://www.aliexpress.us/item/3256805256996507.html)

</TabItem>
 <TabItem value="tracker">

:::info
This device may have issues charging a connected battery if utilizing a USB-C to USB-C cable. It's recommended to use a USB-A to USB-C cable.
:::

- **MCU:**
  - ESP32-S3FN8 (WiFi & Bluetooth)
- **LoRa Transceiver:**
  - Semtech SX1262
- **Frequency Options:**
  - 470 - 510 MHz
  - 863 - 870 MHz
  - 902 - 928 MHz
- **Connectors:**
  - USB-C
  - Antenna:
    - Dedicated 2.4 GHz metal spring antenna for WiFi/Bluetooth
    - U.FL/IPEX antenna connector for LoRa and GNSS

## Features

- Onboard 0.96-inch LCD display
- User and Reset Buttons

## Pin Map

![HT-Tracker_V1 Pin Map](/img/hardware/HT-Tracker_V1_Pin_Map.png)

Image Source: [Heltec](https://heltec.org/project/wireless-tracker/)

## Resources

- Firmware file: `firmware-heltec-wireless-tracker-X.X.X.xxxxxxx.bin`
- Purchase link: [Heltec](https://heltec.org/project/wireless-tracker/)
- Purchase link: [AliExpress](https://www.aliexpress.us/item/3256805495189423.html)

</TabItem>
<TabItem value="paper">

:::info
This device may have issues charging a connected battery if utilizing a USB-C to USB-C cable. It's recommended to use a USB-A to USB-C cable.
:::

- **MCU:**
  - ESP32-S3FN8 (WiFi & Bluetooth)
- **LoRa Transceiver:**
  - Semtech SX1262
- **Frequency Options:**
  - 470 - 510 MHz
  - 863 - 870 MHz
  - 902 - 928 MHz
- **Connectors:**
  - USB-C
  - Antenna:
    - U.FL/IPEX antenna connector for LoRa
    - Integrated 2.4 GHz PCB antenna

## Features

- Onboard 2.13-inch black and white E-Ink display screen
- User and Reset switches
- No GPS

## Resources

- Firmware file: `firmware-heltec-wireless-paper-X.X.X.xxxxxxx.bin`
- Purchase link: [Heltec](https://heltec.org/project/wireless-paper/)
- Purchase link: [AliExpress](https://www.aliexpress.us/item/3256805461611876.html)

</TabItem>
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