| ??? 02/11/07 09:09 Read: times |
#132511 - Demod Responding to: ???'s previous message |
To demod you want a bandpass filter centered on the carrier frequency. To do this as well as the 3pin jobbies you mention you probably need to do a bit of DSP that will probably push the limits of the lpc925. Unfortunately, interference and reflections are your biggest enemies - thats why you need the filtering. You could try using a NE567 tone decoder ic, but that's extra hardware. By the same token - what are you using to receive the IR?
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| Topic | Author | Date |
| Practical 38kHz Demodulation? | 01/01/70 00:00 | |
| Demod | 01/01/70 00:00 | |
| Demod hardware | 01/01/70 00:00 | |
| Demod | 01/01/70 00:00 | |
| CPU Resources | 01/01/70 00:00 | |
| ISP - No it's not going | 01/01/70 00:00 | |
| Why not using a reciever modul?? | 01/01/70 00:00 | |
| Just buy the receivers with built in demod | 01/01/70 00:00 | |
| cpld manchester decoder | 01/01/70 00:00 | |
| Thanks Jez - That's brilliant | 01/01/70 00:00 | |
yeah you can start with altera boards | 01/01/70 00:00 |