--- a/bsc-projects-13.html	Mon Oct 07 15:57:43 2013 +0100
+++ b/bsc-projects-13.html	Mon Oct 07 15:58:12 2013 +0100
@@ -503,7 +503,7 @@
   a chess-program on top of it (have a look at their very impressive
   <A HREF="http://www.youtube.com/watch?v=-03bouPsfEQ&feature=player_embedded">youtube</A> video).
   The other kind of project is a combination of hardware and software; usually attaching some sensors
-  or motors to the Raspberry Pis and Arduino. This might require some soldering or what is called
+  or motors to the Raspberry Pi or Arduino. This might require some soldering or what is called
   a <A HREF="http://en.wikipedia.org/wiki/Breadboard">bread-board</A>. But be careful before choosing a project
   involving new hardware: these devices
   can be destroyed (if &ldquo;Vin connected to GND&rdquo; or &ldquo;drawing more than 30mA from a GPIO&rdquo;
@@ -553,7 +553,7 @@
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