How do I use a udev file to rebind keys on a secondary keyboard that I intend to use for macros to execute a bash script?

I am trying to rebind the keys on a second keyboard in such a way that, when I press, say, the "A" key, it will trigger a script that will execute a command to write the letter a to a text file, then press the F24 key, which a different script is listening for which looks at the text file to see what information is in the file, then executing a command based on the information which is in the file, via a udev file.

I am using this tutorial to figure out how to do this, and I have created a udev file that looks something like this (this is paraphrased, because the actual file is really long:)

evdev:input:b*vYYYYpXXXXe*

#q
KEYBOARD_KEY_70014
#w
KEYBOARD_KEY_7001a
#e
KEYBOARD_KEY_70008

and the rest.

According to the tutorial, I should be able to rebind the keys to other keys, such as F16, F19, etc., but then I would run out of keys, since I intend to do this process to as many keys as possible; instead, what I want is to rebind the keys to scripts that do as spoken above.

Is it possible for this to be done?