Re: Tell me the about IR sensors to be connected to HT12E & 12D for proper transmissi
In order to use a IR LED you need to change the encoder to the
HT12A series, datasheet here:
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On the decoder side keep to use the HT12D.
Encoder diagram example here:
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see also the attached diagram.
Some components used for the transmitter :
1 IR LED, e.g.
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1 NPN bipolar transistor, e.g. BC337, PN2222, BD135, BD137
1 Ceramic filter 455KHz, e.g.
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The receiver section is very simple, circuit use one piece of infrared detector module ( IReceiver 38kHz ), e.g.
- TSOP4838
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- SFH 5110-38 IR receiver
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- TSOP31238
and one NPN bipolar small signal transistor, e.g. BC547, BC337...
Decoder diagram:
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