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OLIMEX ESP32 Ethernet board with external antenna

A lot of users were searching for a way to increase the BLE range of the ESP32, here and here.

I think we have found a good board to achieve that with the EA version of the one below:

With the gateway inside my house and a Mi jia outside 20 meters away, I’m able to get the data.

Here is a focus on the OLIMEX ESP32 gateway with ethernet:


  • ESP32-WROOM32 module
  • MicroUSB connector
  • CH340 USB serial converter
  • Built-in programmer for Arduino and ESP-IDF
  • WiFi, BLE connectivity
  • Ethernet 100Mb interface
  • MicroSD card
  • GPIO 20 pin connector with all ESP32 ports
  • Dimensions: (50 x 62)mm ~ (1.95 x 2.45)"

Note, this antenna is not the original one but an upgrade

Please note that this board has been offered by Olimex.

were you able to use ethernet port instead of wifi ?
Is it needed to change a 0ohm smd resistor to use external antenna ?

Thank you

I’m planning to make OMG compatible with the ethernet port.

I received it with the external antenna and had nothing to change, mine doesn’t have an internal antenna.

Here is some feedback regarding OpenMQTTGateway v0.9.5 with this board:

  • for the moment it is up continuously since 1 month


The remaining memory is stable: