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1  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: I want to build an autonomous GPRS weather station on: January 21, 2011, 10:21:43 am
Thank you jumpjack, that's very helpful!
2  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: I want to build an autonomous GPRS weather station on: January 21, 2011, 09:41:16 am
Hi all,

does anyone have some code for that already? I just noticed that my C coding skills suck badly and I don't actually quite get how to grab the packets.


I have a few questions and it would be great if someone could help me on that:

Should I start the packet detection on the 8 times 1bit 'preamble'?

How is the DATA output of a basic ASK 433MHz receiver working? Can I just use that output directly to map HIGH to 1 and LOW to 0? Or do I need to actually define the lengths of each pulse to parse a 1 or 0?

Thanks for your help (I'm a proud Arduino UNO user for a week so far and I have just started to learn...)

Greetings,
l33chy

P.S.: @TFD: Just out of curiosity: How did could you find out the specs of the transmission protocol? By using a professional logic analyzer?
3  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: I want to build an autonomous GPRS weather station on: January 18, 2011, 02:33:38 am
TFD! You're a genius!  smiley

I'll try to modify the practical arduino weather station sketch to make it work with that... Will keep you guys posted.

(If anyone has some working sketch already, I'd be very pleased though  smiley-grin )
4  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: I want to build an autonomous GPRS weather station on: January 17, 2011, 02:44:05 am
Happy new year everyone smiley

Did any of you have some luck with decoding the wireless sensors data? I have an Alecto WS-3500 which has the same raingauge as the Ventus w155 but the display unit looks more like the one from Auriol... (standard LCD with blue backlight - not inverted like the Ventus device...)

Could someone translate the wireless packets into a binary sequence? I think if we could figure out how to read the temperature and humidity values from the transmission, we would have a first step smiley

Thanks and great work on that!
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