Okay I've pinpointed the problem, but I have no idea how to fix it. The common ground fixed the issue (I messed up something the first time). Now, the signal is fine until I open the Serial Monitor. THEN, it goes crazy. Any ideas??
Okay I've pinpointed the problem, but I have no idea how to fix it. The common ground fixed the issue (I messed up something the first time). Now, the signal is fine until I open the Serial Monitor. THEN, it goes crazy. Any ideas??