http://mitx.mit.edu/
They are launching the Circuits and Electronics course on 5 March.
https://6002x.mitx.mit.edu/
"Students will be given the opportunity to demonstrate their mastery of the material and earn a certificate from MITx."
Prereqs: In order to succeed in this course, you must have taken an AP level physics course in electricity and magnetism. You must know basic calculus and linear algebra and have some background in differential equations.
I think I'll take this up, so with this I'm taking 7 engineering classes this semester. Should be fun.