I never said it was a good idea lmao it's a horrible idea, but I guess the sarcasm doesn't exactly translate over text
Adderall is a quite effective stimulant with manageable side effects, it is also an amphetamine (dextroamphetamine) similar to methamphetamine. I suppose if you mixed that with phencyclidine (PCP) or lysergic acid (LSD) you could probably reliable induce a manic-like state.
That's not how any of that works. Mania does not come from some special "mania center" in the brain. It occurs from many parts of the brain not working correctly. There is no "part of the brain" to access here.