diff --git a/docs/assignments/week09.md b/docs/assignments/week09.md
index eb2b0cf02a9243613e4971ce318dc8c2a9e9cac8..60fecc440cd7594e05e3b2c7f4c0b7ce12e834bc 100644
--- a/docs/assignments/week09.md
+++ b/docs/assignments/week09.md
@@ -89,11 +89,17 @@ Wait 12 hours, take out the crystal, reheat the solution and add 3-4 more tables
 
 Wait another 12 hours and take it out. Continue the 12 hour cycle replenishing the solution with alum depending on how big you want the crystals to grow. 
 
-*Threading tulle with conductive yarn*
+**Threading tulle with conductive yarn**
 
 We laced the tulle with some conductive yarn to see if this makes it easier to solder the crystal/sensor to a circuit. 
 
-ELECTRIC PROPERTIES OF CRYSTALS 
+**Capacitive touch test**
+
+I tested the black alum diamonds by connecting them to a Bare Conductive Touch board, a dev board with capacitive touch sensing built-in. So I could see immediately if touching these crystals could trigger a response in a circuit. The big ones were perfect! The small mesh is triggered only when you touch the ones that sit on the conductive thread. See below. 
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/--3tFxQ8eBc?controls=0" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/KX75g5se9ik?controls=0" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 ##Bio-composite and Leather molding