There may not be a right answer to your question, but I would personally have put it on the Electrical Engineering stack exchange.
The simple reason being that your question requires knowledge about electrical engineering and you will find more qualified users on that page than on Reverse Engineering. (There are about 6'000 Users on RE, compared to almost 45'000 Users on EE.) EE therefore exposes your question to more users and it is more likely that most RE members are also EE members than the other way around.
My point extends to stack overflow, where you will find countless questions that might belong to the Android or Unix/Linux sites, but people either do not know about them or simply want better exposure of their question.
Ideally, it should be possible for a question to simply be tagged for multiple boards, but unfortunately, I don't think this is possible.