diff --git a/.gitmodules b/.gitmodules
index 81d13c5..43bd6f7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "nina-fw"]
 	path = nina-fw
 	url = ssh://git@git.mikahchapman.com:7999/mchapman/nina-fw.git
+[submodule "pid-lib"]
+	path = pid-lib
+	url = https://github.com/nicholastmosher/pid.git
diff --git a/pid-lib b/pid-lib
new file mode 160000
index 0000000..f13095a
--- /dev/null
+++ b/pid-lib
@@ -0,0 +1 @@
+Subproject commit f13095ace615a40e1eced65953f6d6e57bdc83f1