How can I add more buttons o this circuit, so that I can have a fully functional remote?

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1

I am trying to build this project: https://create.arduino.cc/projecthub/mike-murray2/homemade-tv-b-gone-ee08c7?f=1#comments

However, I don't just want to turn a TV on and off, I want more buttons so I can fully control a TV. How can I wire 4 more buttons, to make this more capable?

2

The same way that the current button is wired but using 4 more pins on the Arduino but do not use pins 0 or 1 as they are used by the Serial interface

Do you know how to read the extra inputs and take different actions based on their state ?

3

Hello
Post your current sketch.

4

There is no schematic in the link you provided, just a useless Fritzing picture that is wrong anyway.
But, the Uno has at least four more GPIO pins where you can add more buttons.

Buy a few buttons, LEDs and 1K resistors. Experiment with the basic example sketches on the IDE.

6

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