Folks,

I have build my Blimpduino but I'm having trouble working out how to inflate the envolope.  I have a little bit that sticks out of the side, which looks like a hole covered in transparent plasic.  As far as I can tell, this bit is sealed from the rest of the envelope.  How is one meant to fill and seal the envolope?  I can't work out if I'm being thick or if there is actually something wrong with the envolope :-)

Thanks.