From ff0f9ad81984a03bad9f318e6858d4e4b6976a09 Mon Sep 17 00:00:00 2001
From: jbruce12000 <jbruce12000@gmail.com>
Date: Tue, 15 Jan 2019 19:01:45 -0500
Subject: [PATCH] - add wikimedia animation

---
 docs/pid_tuning.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docs/pid_tuning.md b/docs/pid_tuning.md
index 2a0de10..28510bf 100644
--- a/docs/pid_tuning.md
+++ b/docs/pid_tuning.md
@@ -1,6 +1,8 @@
 Tuning PID Vaules
 =================
 
+![Image](https://upload.wikimedia.org/wikipedia/commons/3/33/PID_Compensation_Animated.gif)
+
 ## The Goal
 A controller with properly tuned PID values reacts quickly to changes in the set point, but does not overshoot much.  It settles quickly from any oscillations and hovers really close to the set point.  What do I mean by close? The average error for my kiln on a 13 hour schedule is .75 degrees F... and I have a noisy thermocouple, so it is possible to do even better.