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Green development board with dual UART headers and RJ45 port

LORDWORLD

LORDWORLD 2-CH UART to Ethernet Converter Module development board

SKU CH-BNNJ-HRQYP

Converts two UART TTL channels to 10/100M Ethernet with bi-directional transparent transmission and four TCP/UDP operating modes

  • Bi-direction transparent UART-to-Ethernet data transmission
  • 10/100M auto-negotiation Ethernet with 802.3 compliance
  • Auto-MDI/MDIX detects and switches cable type automatically
  • DHCP auto-obtains IP and DNS for easy network access
  • Four operating modes: TCP Client, TCP Server, UDP Client, UDP Server

UART-to-Ethernet Bridge for IoT Prototyping

This two-channel module converts UART TTL signals to a 10/100M Ethernet link using embedded MAC and PHY layers. It handles bi-directional transparent transmission and auto-negotiates full- or half-duplex operation under the 802.3 standard. Network parameters such as IP, port and operating mode are set through host-computer software or UART commands.

Makers and engineers adding wired connectivity

Suits projects that need DHCP address assignment, DNS access and automatic cable-type detection via Auto-MDI/MDIX. The four selectable modes — TCP Client, TCP Server, UDP Client, UDP Server — cover common IoT topologies. Builders requiring Power-over-Ethernet, gigabit speeds or wireless links should look at other hardware.

Dual UART channels on a single RJ45 port

Two independent serial streams share one 10/100M Ethernet connection, letting you bridge a pair of TTL devices to the network without extra cabling. This channel density is the key factor when deciding if the board fits your application.

Highlights

  • Bi-direction transparent UART-to-Ethernet data transmission
  • 10/100M auto-negotiation Ethernet with 802.3 compliance
  • Auto-MDI/MDIX detects and switches cable type automatically
  • DHCP auto-obtains IP and DNS for easy network access
  • Four operating modes: TCP Client, TCP Server, UDP Client, UDP Server

Specifications

BrandLORDWORLD

Questions about this item

What power supply must I already have to run this 2-CH UART to Ethernet module?

The module needs an external DC supply connected to its VCC and GND pins; check the board silkscreen or datasheet for the exact voltage before wiring.

Will the 10/100M 802.3 Ethernet port auto-negotiate with my older 10BASE-T switch?

Yes, the RJ45 interface supports 10/100M full- and half-duplex auto-negotiation and Auto-MDI/MDIX, so it will link with legacy 10 Mbit switches using straight or crossover cables.

How can I confirm bi-directional transparent transmission is working after I configure the module in TCP SERVER mode?

Connect the UART pins to a terminal, open a TCP client to the module's IP and port, then verify that characters typed on either side appear instantly on the other.

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