T-HaLow RJ45 Quick Start

Overview

T-HaLow RJ45 combines Wi-Fi HaLow (802.11ah) with a wired Ethernet RJ45 interface, enabling long-range wireless bridging with wired network connectivity.

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Arduino

PlatformIO (Recommended)

1. Install VS Code and the PlatformIO IDE extension
2. Clone the repository:

   git clone https://github.com/Xinyuan-LilyGO/LilyGO-T-Halow.git

3. Open platformio.ini and select the T-HaLow-RJ45 environment
4. Click ✓ to build, connect via USB, click → to upload

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Peripheral Examples

Wi-Fi HaLow + Ethernet Bridge

// T-HaLow RJ45 bridges HaLow wireless to wired Ethernet
// Use the LilyGO-T-Halow library for HaLow initialization
// and ETHClass2/Ethernet for the RJ45 side
#include <T_HaLow.h>
#include <ETHClass2.h>

void setup() {
  Serial.begin(115200);
  // Init Ethernet (RJ45)
  ETH2.begin();
  // Init HaLow (802.11ah)
  HaLow.begin();
  HaLow.connect("your-halow-ssid", "your-password");
  while (!HaLow.connected()) {
    delay(500); Serial.print(".");
  }
  Serial.println("\nHaLow connected, bridging to Ethernet");
}

void loop() { delay(1000); }

Note: Refer to the LilyGO-T-Halow repository examples for the current bridge API and exact pin configuration.

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FAQ

Q: Upload keeps failing?
A: Hold BOOT, press and release RST, then release BOOT to enter download mode.

Q: What is T-HaLow RJ45 used for?
A: It bridges Wi-Fi HaLow (sub-1 GHz long-range wireless) to a wired Ethernet network — useful for connecting IoT sensors in distant locations to a local network.