diff --git a/pid.h b/pid.h
new file mode 100644
--- /dev/null
+++ b/pid.h
@@ -0,0 +1,8 @@
+#ifndef PIDS_H
+#define PIDS_H
+
+#include "states.h"
+
+int16_t pid_update(uint16_t k_p, uint16_t k_i, uint16_t k_d, int16_t temp, uint8_t temp_frac, int16_t setpoint, therm_settings_t* set, therm_status_t* status);
+
+#endif