There is nothing formal about this, but generally one or two members take an interest in someone else project. Looks like Tracecom has volunteered.
Seriously, if you have any questions about schematic or how a circuit I've posted (or any circuit for that matter) works, just ask. Many times you'll get many answers, and one might make sense where the rest don't.
Seriously, if you have any questions about schematic or how a circuit I've posted (or any circuit for that matter) works, just ask. Many times you'll get many answers, and one might make sense where the rest don't.