ESPHome Installation Experience on WT32-ETH01

General
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ESPHome Installation Experience on WT32-ETH01

Hello everyone,

I wanted to share my experience with installing ESPHome on the WT32-ETH01 module I purchased from AliExpress. I was pleasantly surprised by how straightforward the process was, despite some initial concerns about compatibility and setup.

Why I Chose the WT32-ETH01

I decided to go with the WT32-ETH01 because I wanted a reliable solution that used Ethernet instead of Wi-Fi. Here are some of the reasons behind this choice:

  • Reliability: Ethernet connections are more stable than Wi-Fi, especially for security applications.
  • Long Distance: Ethernet can handle longer distances without signal degradation.
  • Signal Integrity: I prefer the security and reliability of a wired connection over the potential interference of Wi-Fi.
  • EMF Concerns: I’m more comfortable with fewer wireless devices in my home.

The Installation Process

One challenge I anticipated was the lack of a USB connection on the WT32-ETH01. I thought I’d need a separate flashing tool, but it turned out I could use the Esphome dashboard directly. Here’s a quick rundown of how I did it:

  1. Hardware Setup: I used a CH340G Serial Converter USB to TTL adapter. The pin connections were crucial:

    • RX and TX were crossed (TX to RX0 and RX to TX0).
    • IO0 and GND needed to be connected together on the WT32-ETH01.
    • On the USB converter, I set the jumper to S1 and 5V.

  2. Software Setup: I installed the Esphome dashboard using the commands provided in the Esphome documentation. My Home Assistant runs on a Raspberry Pi 0, which didn’t have enough RAM to handle Esphome directly, so the dashboard was the perfect solution.

  3. Configuration: I added a device in the Esphome dashboard, skipped the Wi-Fi setup, and edited the .yaml file to match the Ethernet configuration for the WT32-ETH01. The process was smooth, though I encountered a timeout error on my first attempt. Disconnecting and reconnecting the USB adapter resolved the issue.

  4. Final Touches: After flashing, I removed the jumper wire connecting IO0 and GND and connected an Ethernet cable. My router recognized the device immediately, and it’s been working flawlessly ever since.

Results and Thoughts

While I can’t speak to the long-term reliability yet, the initial success has been encouraging. I’m planning to use this setup for several projects, including monitoring and automation tasks. The ability to run ESPHome on this module opens up a lot of possibilities for wired IoT solutions.

I’d love to hear if anyone else has experience with the WT32-ETH01 or similar modules. Have you tried using Ethernet for your ESPHome projects? What challenges or successes have you encountered?

Best regards,
[Your Name]