diff --git a/readme.md b/readme.md
index a843bd7..ece1949 100644
--- a/readme.md
+++ b/readme.md
@@ -25,3 +25,18 @@ Last octets:
 Schematics and legend for signals:
 
 ![](./docs/schematics.jpeg)
+
+
+## Timing
+
+Complete cycle:
+
+![](./docs/pulse_complete.png)
+
+Short pulse:
+
+![](./docs/pulse_short.png)
+
+Long pulse:
+
+![](./docs/pulse_long.png)