modupm
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| modupm [2009/03/08 00:19] – sestst | modupm [2010/08/17 19:39] – sestst | ||
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| UPM manufactures wireless thermometers and weather stations. The temperature sensors communicate via a radio protocol with the base station. | UPM manufactures wireless thermometers and weather stations. The temperature sensors communicate via a radio protocol with the base station. | ||
| - | The protocol sent from the sensors is actually a digital protocol which is AM decoded over 433.92MHz radio signal. The bit rate of the protocol is slow enough to be sampled by the microphone input of a regular PC, so this is the interface we use. All wee need is to find the decoded radio signal, adapt the level and feed it into the microphone input. The NetHome software does the rest. | + | The protocol sent from the sensors is actually a digital protocol which is AM decoded over 433.92MHz radio signal. The bit rate of the protocol is slow enough to be sampled by the microphone input of a regular PC, so this is the interface we use. All we need is to find the decoded radio signal, adapt the level and feed it into the microphone input. The NetHome software does the rest. |
| ===== Modifying hardware ===== | ===== Modifying hardware ===== | ||
modupm.txt · Last modified: 2018/11/03 02:59 by 127.0.0.1