IR Receiver
The Walnut Pi has 1 onboard infrared receiver.

The Walnut Pi system comes pre-installed with ir-keytable software, which can be used to view IR device information and test IR reception decoding.
Viewing Device Information
Run the following command in the terminal to view IR device information:
ir-keytable

IR Reception Test
First, you will need a commonly available remote control, such as the one shown below, which is easy to purchase.

Enter the following command in the terminal and wait for IR remote signals:
sudo ir-keytable -c -p NEC -t

Point the remote control at the IR receiver and press any button:

You will see the received IR code in the terminal:
