diff --git a/docs/Module_Build_From_Scratch.md b/docs/Module_Build_From_Scratch.md
index f012225..34db6c4 100644
--- a/docs/Module_Build_From_Scratch.md
+++ b/docs/Module_Build_From_Scratch.md
@@ -10,7 +10,7 @@ The Arduino Pro-Mini is available many places online. Check Sparkfun (the origi
A module case that fits your receiver like the one [here](https://www.xtremepowersystems.net/proddetail.php?prod=XPS-J1CASE)
or you can 3D print your own from a selection on Thingiverse ([Example 1](http://www.thingiverse.com/thing:1852868) [Example 2](http://www.thingiverse.com/thing:1661833)).
-
+ [ ](http://www.thingiverse.com/thing:1852868)
You will require a second Arduino or a FTDI (USB to TTL serial) cable to program the Pro-Mini. Like the one [here](https://www.sparkfun.com/products/9717). **Make sure you get only a 3.3V FTDI cable - or you will fry your 3.3V RF modules when you connect it up.**