Hello,

I’d like to introduce an exceptionally small Ethernet to UART converter : PP-Ethernet-UART-MINI from Platypus.

PP-Ethernet-UART-MINI

As you can see, it's impressively small.

In most cases, it's soldered directly onto the PCB without any headers, making it feel more like a built-in component than a separate module.

The underside of the board is filled with components.

Despite the limited space, the design manages to deliver excellent performance and rich functionality.

Below is a summary of its key features.

The module supports high-speed UART communication up to 921 kbps, an impressive rate for serial interfaces.

It also includes protocol support for MQTT, MQTTs, and ModbusRTU/ASCII, along with standard TCP/IP server and client capabilities.

The interface is as described above.

The pins we need to design around are the power pins, UART pins, and the 232/485 CS pin.

The remaining pins are primarily used for firmware updates.

Since the firmware can be updated via Ethernet using the provided tool, there’s no need to implement USB or BOOT circuitry in our design.

configuration tool

Module control is straightforward.

A dedicated configuration tool is provided, which operates over Ethernet.

Alternatively, users can configure the module via serial communication using standard AT commands.

In closing,

If you're looking for a compact and reliable Serial to Ethernet converter,

this module is a great option — even suitable for industrial use.

You can find more information in the link and user manual provided below.

Thanks for reading!

PP-Ethernet-UART-MINI