diff --git a/pid/pidthread.hpp b/pid/pidthread.hpp
new file mode 100644
index 0000000..670d558
--- /dev/null
+++ b/pid/pidthread.hpp
@@ -0,0 +1,6 @@
+#pragma once
+
+#include "pid/zone.hpp"
+
+/* Given a zone, run through the loops. */
+void PIDControlThread(std::shared_ptr<PIDZone> zone);