5e artificer in a 5.5e campaign

I have just gotten access to Ravenloft: Horrors Within and I am pretty excited about the options available. However, one thing worries me. The Artificer. 

I have access to the Artificer class from Tasha Cauldron of Everything, but will this suffice? 

I know of the Eberron: Forge of the Artificer supplement, but I am not really interested in getting it, as there is nothing else in the book that interests me. 

So, my question is, will the Artificer from TCoE work, even with everything else being 5.5e?

You'll have to set the rulesets you want to use in the character builder (assuming DnD Beyond)

Character Preferences
Sources
(select these ones)
5.5e Core Rules - Character options from the 5.5e Player’s Handbook, Dungeon Master’s Guide, Monster Manual, and D&D Beyond Basic Rules.
5.5e Expanded Rules - Character options from supplementary sourcebooks beyond the 5.5e Core Rules.
5e Expanded Rules - Character options from supplementary sourcebooks such as Tasha’s Cauldron of Everything and Xanathar’s Guide to Everything, that are beyond the 5e Core Rules.

Next tab

Choose a Class
Then deselect the core 5.5e Core Rules classes and choose the 5e Expanded Rules classes, and choose Artificer from tasha's

Sorry - too feeble for screenshots and DDB is destroying any6 attempt to edit the formatting on this post FFS

Oh I know how to set it up in D&D Beyond. I was wondering if the 5e artificer would fall short somehow if everything else was 5.5e. 

I missed that the 5.5e Artificer was actually included with the R:THW on D&D Beyond, so this is not an issue at all. 

All good then.

Pro's and cons to 5e and 5.5e versions, ultimately it is what you make it and shouldn't "fall short" if you have fun.