writing melody

[OussaBer]

I have a melody in my mind, and I struggle to create it in the piano roll, I don't know how to do it.

[Harry_HH]

Once you mention the piano roll, playing your melody with any keyboard (Midi) instrument is, of course, the most obvious way.

If you can't play the keys (which is not likely, because you can record the melody note by note, if you will), you have other choises.

E. g. sing or whistle the melody, record the audio, use "convert audio to Midi", and then edit the Midi notes in the piano roll.

Depends on your DAW, too.

(And if your question was a joke, you can stick your melody there, where the sun doesn't shine).

[AllMac]

Probably you will need a MIDI controller, i think is easier to produce.
(OR) You should try an App to emulate a Piano on the PC Keyboard..

[deastman]

Sounds to me like you just need more practice. There isn’t some special magic trick which composers have been sharing in secret for hundreds of years.

[Forgotten]

Probably you will need a MIDI controller, i think is easier to produce.

Completely agree with this - it's a hundred times faster to just sit in front of a piano keyboard and put something together than it is to figure it out on paper (piano roll)