diff --git a/hardware/lib/symbols/signal-ground.sym b/hardware/lib/symbols/signal-ground.sym
new file mode 100644
index 0000000..7be6fac
--- /dev/null
+++ b/hardware/lib/symbols/signal-ground.sym
@@ -0,0 +1,17 @@
+v 20121203 2
+P 100 100 100 300 1 0 1
+{
+T 158 161 5 4 0 1 0 0 1
+pinnumber=1
+T 158 161 5 4 0 0 0 0 1
+pinseq=1
+T 158 161 5 4 0 1 0 0 1
+pinlabel=1
+T 158 161 5 4 0 1 0 0 1
+pintype=pwr
+}
+L 0 100 200 100 3 0 0 0 -1 -1
+T 300 50 8 10 0 0 0 0 1
+net=GND:1
+L 0 100 100 0 3 0 1 0 -1 -1
+L 100 0 200 100 3 0 1 0 -1 -1