# RAK3272S Digital I/O's

[https://docs.rakwireless.com/product-categories/wisduo/rak3272s-breakout-board/quickstart/#how-to-use-digital-io](https://docs.rakwireless.com/product-categories/wisduo/rak3272s-breakout-board/quickstart/#how-to-use-digital-io)

<table id="bkmrk-pin-namej-connector-"><colgroup><col></col><col></col></colgroup><tbody><tr><th class="align-center" style="text-align: center;">**Pin Name**</th><th class="align-center" style="text-align: center;">**J Connector pin**</th></tr><tr><td class="align-center" style="text-align: center;">PA4

</td><td class="align-center" style="text-align: center;">J5 pin 4

</td></tr><tr><td class="align-center" style="text-align: center;">PA5

</td><td class="align-center" style="text-align: center;">J5 pin 3

</td></tr><tr><td class="align-center" style="text-align: center;">PA6

</td><td class="align-center" style="text-align: center;">J5 pin 2

</td></tr><tr><td class="align-center" style="text-align: center;">PA7

</td><td class="align-center" style="text-align: center;">J5 pin 1

</td></tr><tr><td class="align-center" style="text-align: center;">PA8

</td><td class="align-center" style="text-align: center;">J4 pin 1

</td></tr><tr><td class="align-center" style="text-align: center;">PA9

</td><td class="align-center" style="text-align: center;">J4 pin 2

</td></tr><tr><td class="align-center" style="text-align: center;">PB6

</td><td class="align-center" style="text-align: center;">J5 pin 5

</td></tr><tr><td class="align-center" style="text-align: center;">PB7

</td><td class="align-center" style="text-align: center;">J5 pin 6

</td></tr></tbody></table>

[![image.png](https://humfra.nl/uploads/images/gallery/2026-09/scaled-1680-/2lUevduTR2WdMlHH-image.png)](https://humfra.nl/uploads/images/gallery/2026-09/2lUevduTR2WdMlHH-image.png)

```c
void setup()
{
  pinMode(PA7, OUTPUT); //Change the P0_04 to any digital pin you want. Also, you can set this to INPUT or OUTPUT
}

void loop()
{
  digitalWrite(PA7,HIGH); //Change the PA0 to any digital pin you want. Also, you can set this to HIGH or LOW state.
  delay(1000); // delay for 1 second
  digitalWrite(PA7,LOW); //Change the PA0 to any digital pin you want. Also, you can set this to HIGH or LOW state.
  delay(1000); // delay for 1 second
}
```