homehw
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- | To use the microphone as an input, you need to adjust the incoming signal level to the sensitivity of the microphone and put a capacitor in series to block the DC component introduced by most microphone inputs. The capacitor C2 is usually not needed, it is intended to remove noice. | + | [[homehwrec|{{: |
- | {{:upm_scheme.png| Reception Circuit}} | + | With a generic 433.92MHz OOK transmitter connected to the speaker output and the protocol drivers in NetHomeServer, |
- | To use the speaker output for transmission, | ||
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- | But to actually send or receive as IR or RF you also need additional interfaces. Fortunatly, building these interfaces is not very hard. You can do it by modifying existing devices or by using special built devices. Here are a few examples of devices I and some other users have built. | ||
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- | ===== Modifying existing devices ===== | ||
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- | * [[modupm|Using the UPM thermometer as RF receiver for the 433.92MHz band]] | ||
- | * [[modnexaremote|Using a Nexa remote control as generic 433.92MHz transmitter]] | ||
homehw.txt · Last modified: 2018/11/03 02:59 by 127.0.0.1