diff --git a/devices_v0.4/i2c.yaml b/devices_v0.4/i2c.yaml
index 8b13789..0dc4143 100644
--- a/devices_v0.4/i2c.yaml
+++ b/devices_v0.4/i2c.yaml
@@ -1 +1,6 @@
-
+i2c:
+  - id: i2c_bus
+    sda: GPIO14
+    scl: GPIO15
+    scan: True
+    frequency: 400kHz