Oregon Scientific THGR228 protocol

Post by **frank_malone** » Tue Aug 28, 2007 11:02 am

Hi!

I'm Frank, from Spain. It's my first post although I've been reading since about a month now.

And now my first question:

I've purchased a 433MHz receiver (aurel) and connected it to the serial port of my computer via a MAX232. My goal is to get temperature and humidity from a THGR228 sensor by Oregon Scientific. I've been reading documents in rfxcom but what I get instead of 80 bits, is a chunk of 88 bytes. I've turned around once and once again the binary value of those bytes and I'm not able to get the info described in rfxcom for the oregon scientific protocol.

Any help welcome.
Regards.

P.S.: I apologize if it's not the right forum for such a question.

Post by **Snelvuur** » Tue Aug 28, 2007 2:09 pm

Maybe if you say which programming language, and the piece of code that others can see if there are any errors.

// Erik (binkey.nl)

Post by **b_weijenberg** » Tue Aug 28, 2007 2:25 pm

Frank,

You have bought the wrong receiver

The RFXCOM receiver has a microcontroller that decodes and translates the received signals to the RS232 format as presented in the RFXCOM documentation. This data is then send over the RS232 channel to a PC or any other system.

Bert

Post by **frank_malone** » Tue Aug 28, 2007 2:50 pm

Hi!

Erik: By now I'm only messing around with the hyperterminal. I'll try to decode the data and then will make a software to log data etc.

Bert: Of course. It's a very complete solution. I like it and its documentation is being a great help for me (thanks a lot). But you better than anyone know the satisfaction of the "do it yourself" job. Because of that I don't want you to give me the key! I just want a small tip for going on.

I'm wondering if it could be a matter of synchronization. The aurel module gives the data at 2400bps. I don't know exactly the bit rate of the oregon sensors.

The Oregon Scientific RF Format document especifies the protocol of the THR128 sensor. I think I should receive something like that.

Could you throw some light?

Thank you.

Post by **Snelvuur** » Tue Aug 28, 2007 3:53 pm

Here's some light

// Erik (binkey.nl)

Post by **frank_malone** » Wed Aug 29, 2007 8:59 am

Thank you Erik!! Much better now!! [:D] [:D] [:D]

Post by **Snelvuur** » Wed Aug 29, 2007 9:37 am

Maybe this topic helps? http://www.domoticaforum.eu/topic.asp?TOPIC_ID=387 its still an oregon device, but it explains it a bit more.

// Erik (binkey.nl)

Post by **frank_malone** » Thu Aug 30, 2007 12:44 pm

Thank you Erik.

That post may be a good start point.

Regards.

Post by **gpic** » Mon Sep 17, 2007 9:47 am

Hello,

I wish to produce an autonomous programmer of temperature but (without PC) using a chip PIC16F876. I wish to know the protocol of the probe GÃ©onaute WS50 (French model (store Decathlon) that Oregon but less expensive).
I connected a module RF solutions and an oscilloscope. I found trame of 142ms and pulses of 2.8ms. It is the 48 bits of the protocol but it is difficult to find the protocol.

I saw that Rfxcom worked on the protocol of the Oregon probes but I do not manage to have more information.

Would have you additional infos on this protocol?

Sorry for my approximate English.

Thank you in advance

Post by **Sonny** » Tue Oct 09, 2007 12:58 pm

Hello Frank!
It's not so easy to get data from RF sensors.
I have done the device that get data from THN128 and BTHR968 (both from oregon scientific).
Furthermore i have done my own RF Hygro/Termo sensor that is compatible with OS weather stations.
All my devices for private uusage and not commercial just for satisfaction of the "do it yourself"

If you want additional information - contact me in ICQ 305206239.
Best regrds!

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by frank_malone
 Hi!

I'm Frank, from Spain. It's my first post although I've been reading since about a month now.

And now my first question:

I've purchased a 433MHz receiver (aurel) and connected it to the serial port of my computer via a MAX232. My goal is to get temperature and humidity from a THGR228 sensor by Oregon Scientific. I've been reading documents in rfxcom but what I get instead of 80 bits, is a chunk of 88 bytes. I've turned around once and once again the binary value of those bytes and I'm not able to get the info described in rfxcom for the oregon scientific protocol.

Any help welcome.
Regards.

P.S.: I apologize if it's not the right forum for such a question.

<hr height="1" noshade id="quote"></blockquote id="quote">

Post by **Kroonen** » Sun Oct 28, 2007 1:33 pm

Maybe this is interesting for you

http://ficara.altervista.org/atmel_avr.php

kind regards

Richard

Post by **Sonny** » Tue Jan 22, 2008 7:43 am

You can also visit my homepage http://alyer.frihost.net and read there an articles that can help you to understand principles of Oregon Scientific data encoding.
Best regards!