Nec ir

[be80be]

Have you looked at this
**broken link removed**

**broken link removed**

When transmitting or receiving remote control codes using the NEC IR transmission protocol, the WB_IRRC performs optimally when the carrier frequency (used for modulation/demodulation) is set to 38.222kHz.

The NEC IR transmission protocol uses pulse distance encoding of the message bits. Each pulse burst (mark – RC transmitter ON) is 562.5µs in length, at a carrier frequency of 38kHz (26.3µs). Logical bits are transmitted as follows:

Logical '0' – a 562.5µs pulse burst followed by a 562.5µs space, with a total transmit time of 1.125ms

Logical '1' – a 562.5µs pulse burst followed by a 1.6875ms space, with a total transmit time of 2.25ms

 

[AtomSoft]

I had all that right... this was omited:

(discounting the final 562.5µs pulse burst that signifies the end of message).

Not sure why they dont count this if its so important

Thanks for the link

They also have RC5... cool... **broken link removed**

 

[AtomSoft]

Take a look!

https://www.youtube.com/watch?v=nw8-BNauf1U

 

[AtomSoft]

Here is a picture of the prototype remote:

 

[ady2006]

Please, can anyone explain to me how is interpreted 10 bit value of adc in this application ? And how is key press decision repeatable comparing a single value, not an interval.

 

[be80be]

Please, can anyone explain to me how is interpreted 10 bit value of adc in this application ? And how is key press decision repeatable comparing a single value, not an interval.

Your not you could send out the numbers and then read them.