UEXT Modules

The Universal Extension Connector is a 10-pin connector featuring most important microcontroller interfaces I2C, UART and SPI. With the integrated 3V3 power supply, it can be used to connect different communication modules to a given device.

All Libre Solar devices are equipped with a UEXT connector.

Several UEXT modules are available at Olimex, the inventor of the UEXT standard.

Here are some additional modules we developed for the Libre Solar components:

GSM module

Development Stage Tested prototype, only minor issues left.

GSM communication module with UEXT connector

Features

  • Based on SIM800L module
  • Separate power supply from 12V or 5V (GSM board needs 4.2V and 2A)
  • Reverse polarity protection for separate power supply

Further information

Visit the GitHub page for schematics and board layout.

LoRa module

Development Stage Tested prototype, only minor issues left.

LoRa communication module with UEXT connector

Features

  • Based on HopeRF RFM95
  • Separate antenna connector

Further information

Visit the GitHub page for schematics and board layout.