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Topic: Arduino based Oregon Scientific sensor (Read 1 time) previous topic - next topic


Hi there,

I'm new here and want to start a new Arduino project: make a Oregon Scientific sensor clone.
What I want to do is to measure room relative humidity & temperature as well as my wall temperature.
The whole point is to give me the relative humidity of the air at the temperature of the wall to see if I can expect condensation there and therefore mould.

As a first step, I would like to send data to the my weather station using their protocol.

I purchased a 433Mhz transmitter from eBay: http://www.open.com.au/mikem/arduino/VirtualWire.pdf

and found the specification of the Oregon Scientific protocol here http://wmrx00.sourceforge.net/Arduino/OregonScientific-RF-Protocols.pdf

I found a guy who managed to transmit Oregon Scientific data to the weather station but he wrote the whole thing in ASM, which is a little too hardcore for me to understand.

From what I understand, I will have to re-write a part of the transmitter library before starting any other development.
Does anyone have such an experience to point me in the right direction?

Thanks !

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