Yes, Michaux does have a few developed camp grounds which you pass right by. However, be fair warned, they are family oriented. The bath rooms are very modern, however, the fee is spendy. I'd bet that they early part of the track has some camping, although it's not as obvious.
Lastly, Michaux is only a stones' throw from Gettysburg, which will have camping and all other needed supplies.
Nothing (ad)ventured, Nothing Gained
Everything you want is on the other side of fear.