On/Off led with RF Link and 16F628

[dhouston]

Try searching the forum on manchester code. There's a transition in the middle of the bit period. Its direction determines 1 or 0.

   _          _
1=| |_   0=|_|

or vice versa - which is 1 and which is 0 is arbitrary.

There's usually a series of pulses without spaces to denote the start of a code.

However, if the codes use KeeLoq, you'll never see the same code twice so storing for comparison with later codes is a waste of time and effort..

[dhouston]

Wikipedia has better pictures and a description of manchester codes.

The widest pulse or space equals 1 bit period. The shortest pulse or space equals 1/2 bit period. Find the middle of each bit period and check the transition.