1.0 link Rainbow Dash Network http://rainbowdash.net/ Cerulean Lulamoon-Spark (ceruleansparkold) http://rainbowdash.net/ceruleansparkold http://rainbowdash.net/notice/561728 @<span class="vcard"><a href="http://rainbowdash.net/user/1235" class="url" title="Henrik Westerlund"><span class="fn nickname">flaxx</span></a></span> It wasn't actually so hard. The robot had 3 pressure sensors (Front left, front right and back). You just had to program it with a &quot;response&quot; to pressure on each sensor. The maze walls were all straight and all the turns were at predictable 90 degree angles, so the responses were typically some variation of &quot;Stop, go back a little and turn a quarter or half circle, then go forward again&quot;