If your intent is to let someone know that you will contact them using Skype:
1) When I get home I will contact you via Skype.
2) When I get home I can connect with you on Skype.
3) I will call you on Skype when I get home.
4) We can skype when I get home.
My preference would be (3) or (4). Note that (4) has turned the program Skype into a verb 'skype'. It's like when we use the noun Google as a verb 'to google' i.e. I will google that later.