User manual

5.3 Arduino shield platform

These four connectors are usually used when you want to mount extension shield on the

OLIMEXINO-328. The shield connector layout follows the original Arduino layout and spacing

BUT we have also provided set of metalized holes that improve the layout by keeping 0.1'' step

between connectors. The extra holes might be used when the original connector get clunky of wires.

They can be used for placing measuring tools.

Olimex has a number of shields available. They might be found here:

https://www.olimex.com/Products/Duino/Shields/

5.3.1 CON1 – POWER

Pin # Signal name

1 RESET

2 +3.3V

3 +5V

4 GND

5 GND

6 VIN

5.3.2 CON2 – ANALOG

Pin # Signal name

1 A0

2 A1

3 A2

4 A3

5 A4(SDA)

6 A5(SCL)

5.3.3 CON3 – DIGITAL

Pin # Signal name

1 D0(RXD)

2 D1(TXD)

3 D2(BUT)

4 D3

5 D4

6 D5

7 D6

8 D7

Note: There is a capacitor C12 connected to D2 and in parallel to BUT (for filtering bounces of the

BUT) but it can cause interference (and unwanted filtering of signals) if you want to connect for

instance RF module to D2, remove C12.

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