Category Archives: Projects

Oregon Scientific version 2.1 & 3.0 RF protocol

The RF transmissions use on-off-keying (OOK) with Manchester coding on a carrier frequency of 433.92MHz. See the Wikipedia entry on Manchester coding for more information or consult a basic text on digital RF communications. All OS protocol versions use the … Continue reading

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RF Oregon Scientific version 1.0 Protocol Samples

A number of samples are available to help describe the protocol and structure of messages. The version 1.0 preamble is shown below. The clock rate used to generate the x-axis was 342Hz. The integer values on the horizontal axis are … Continue reading

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New developments USB – RS485

  Well, it’s been a while since the last update so here it goes: we are preparing a few products which will be available in the shop, and as always the people that built them know them better. We’ll have … Continue reading

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Tinkering with Arduino

Well, about time for me to try and understand what is going on inside all these things making use of the 433 MHz, kind of hard not knowing a lot about programming and stuff Thanks God for the multitude of … Continue reading

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