Solution

“Aroma” in the title was meant to hint at “flavor”, showing that we are dealing with mashed flavor texts. Each pair of module names discovered from the flavor texts can be mashed as well. The numbers on the right of each clue are [a number to index/letter count of the mashed modules]. After indexing, the solution is found.

Flavor Text 1	Module 1	Flavor Text 2	Module 2	Mashed Modules
Introduce yourself to...	Double Color	...chromophobia!	Colorful Madness	Double Colorful Madness [15/21]
Greek letters are too pretentious, so we use...	Only Connect	...some kind of circuit visualization.	Connection Check	Only ConnectIon Check [12/19]
Maybe they were... in a previous life?	LED Grid	...this stop and go...	Grid Lock	LED GridloCk [10/11]
Hm, why doesn’t that solve the...	Hogwarts	...bomb over 25 years later?	Sonic the Hedgehog	Sonic the HedgehogwaRts [19/21]
The hard part here is not...	Kudosudoku	...getting in shape.	Shikaku	ShikakudosudOku [13/15]
The engineering...	Wire Sequence	...just isn’t complicated enough.	Perplexing Wires	Perplexing Wire SequenCe [21/22]
This appears to be...	Adventure Game	...a matter of life and death!	Game of Life	Adventure Game Of Life [14/19]
Deliver us from the evils but don’t be fooled!... the skull.	Mystic Square	It’s a brilliantly disguised imposter foiled only by...	Square Button	Mystic Square ButtoN [18/18]
You’ve lived all your life...	English Test	...in so. Many. Languages.	Speak English!	Speak English Test [22/22]
Just don’t break the button...	Button Masher	...what could possibly go wrong?	The Plunger Button	The Plunger Button MasheR [22/22]
Make it so...	Superlogic	...it doesn’t make sense to you.	Logical Buttons	Superlogical ButtOns [17/19]
The name “blinkenlights”...	Light Cycle	...doesn’t have 12 dots.	Flashing Lights	Flashing Light Cycle [14/19]
Turns out it’s a bit harder when...	Colour Flash	...I’ve no idea what it says.	Flashing Lights	Colour Flashing Lights [15/20]
Somehow... feels oddly redundant.	Minesweeper	...the perspective of another...	Perspective Pegs	Minesweeperspective PEgs [21/23]
Now it’s time to send...	Reverse Morse	...supplies to foreign allies.	Morse War	Reverse Morse WaR [15/15]

MICROCONTROLLER