add a top level project link

diff --git a/index.mdwn b/index.mdwn
index 7bc9628a45235758901ec47e65750702c7275b87..ec979baf95a6bd58cce8bd668eb45f636bb599da 100644 (file)
--- a/index.mdwn
+++ b/index.mdwn
@@ -125,6 +125,8 @@ analog sensor input, and 5 general purpose I/O lines.
 * [TeleTerra](TeleTerra) is a hand-held ground station for use with 
 [TeleMetrum](TeleMetrum/) and [TeleMini](TeleMini/).
 
+* [USBtrng](USBtrng) is a USB-attached True Random Number Generator
+
 # [Documents](Documents) #
 
 # Hobby Rocketry #