Took me a while to figure out that NCO is abbreviation for Numerically Controlled Oscillator. What threw me was the first line that says the transmitting LED is STEADY on. It might look steady, but our eyes have really long persistence of vision unlike most cameras. You can do some basic testing by changing the frequency for any 'blinky' program on your favourite CPU board. Oh yes, things start to get interesting when you move the transmitting LED too. Try spinning it.
Took me a while to figure out that NCO is abbreviation for Numerically Controlled Oscillator. What threw me was the first line that says the transmitting LED is STEADY on. It might look steady, but our eyes have really long persistence of vision unlike most cameras. You can do some basic testing by changing the frequency for any 'blinky' program on your favourite CPU board. Oh yes, things start to get interesting when you move the transmitting LED too. Try spinning it.