User manual

CHAPTER 5 - INTERFACES AND HARDWARE

5. Introduction to the chapter

In this chapter are presented the interfaces found on the programmed that can be found on the

board. Jumpers functions are described.

5.1 UEXT connector

The UEXT is used to connect additional extension modules to the OLIMEXINO-328. Most Olimex

extensions (named MOD-XXXX) can be plugged directly to this connector. If you wish to add

additional extras to your board this is the right interface. Of course, using jumper wires you might

connect any other board that uses I2C, SPI or UART interface without the need of soldering.

More information about the UEXT might be found here:

https://www.olimex.com/Products/Modules/UEXT/

Pin # Signal name

1 VCC

2 GND

3 D1(TXD)

4 D0(RXD)

5 A5(SCL)

6 A4(SDA)

7 D12(MISO)

8 D11(MOSI)

9 D13(SCK/LED1)

10 UEXT_#CS

5.2 PWR_J connector

The power jack used is the typical 2.5mm one used by Olimex in most of our products. You should

provide between 6 and 16 volts @ 1.5A maximum to the board.

Note that we also sell a couple of compatible 12V capable power supplies suitable for European

customers. These might be found here: https://www.olimex.com/Products/Power/.

Pin # Signal name

1 Power Input

2 GND

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