user67296: So I wanna build something which, when it receives a remote signal, presses the spacebar on my laptop keyboard. I tried using the Keyboard.press() but it is available only for Leonardo. Is there any way I can use it in my Uno, without having to mess with the firmware?
If not, what else can I use to accomplish my goal?

user66133: if you have some knowledge in Java or Python you can interface your Arduino board to PC, through Arduino's SerialPort.
When Arduino sends a byte, for example, 0xAB, your Java or Python script sends a fake key-press event.
I hope this can help. Good luck!

user50339: On Windows you can use a serial to keyboard redirector like this one
It can start with windows, Im using it for a long time without any issues.


67296: <p>So I wanna build something which, when it receives a remote signal, presses the spacebar on my laptop keyboard. I tried using the Keyboard.press() but it is available only for Leonardo. Is there any way I can use it in my Uno, without having to mess with the firmware?</p>
<p>If not, what else can I use to accomplish my goal?</p>
 66133: <p>if you have some knowledge in Java or Python you can interface your Arduino board to PC, through Arduino's SerialPort.
When Arduino sends a byte, for example, 0xAB, your Java or Python script sends a fake key-press event.
I hope this can help. Good luck!</p>
 50339: <p>On Windows you can use a serial to keyboard redirector like <a href="http://www.priority1design.com.au/datasnip.html" rel="nofollow noreferrer">this one</a></p>
<p>It can start with windows, Im using it for a long time without any issues.
<a href="https://i.stack.imgur.com/I8YhV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/I8YhV.png" alt="enter image description here" /></a></p>
