[OpenTRV-dev] What else do i need

[Mike Stirling]

868 MHz (or 433) is preferable to 2.4 GHz because the in-building performance is better for the same power. For HA applications the reduced bandwidth and duty cycle restrictions of the sub-GHz bands should not pose a problem. Nordic semi do have sub-GHz radios as well, though, if you can find a module.

Mike
 

----------------original message----------------- 
From: "Paul Smith" 
 
To: "Closed list for developer discussions" EMAIL ADDRESS HIDDEN 
Date: Wed, 10 Apr 2013 11:20:47 +0100 
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>Hi Gyus
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>Have you seen these radios as an alternative to the EOL rfm23b
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>[http://gizmosnack.blogspot.se/2013/04/tutorial-nrf24l01-and-avr.html
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>Do they sound any good for opentrv.
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>Regards
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>Paul
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>On 6 April 2013 21:23, Mike Stirling EMAIL ADDRESS HIDDEN 
>EMAIL ADDRESS HIDDEN wrote:
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>I would have said TME in Europe (www.tme.eu), but their stocks appear to be dwindling 
>already. Don't worry about it too much, though. There are other modules which, while not as 
>cheap, would still be suitable. I also haven't ruled out doing my own module based on the newer 
>SiLabs transceiver chip or the TI CC1101.
>
>Mike
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>On 06/04/13 20:47, Paul Smith wrote:
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>>
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>>Hi Mike,
>>
>>That's great. I know the rfm23b is going eol. I'm thinking I should order enough now to 
>>complete my project.
>>
>>Where would you suggest is best.
>>
>>Regards,
>>
>>Paul
>>
>>-- 
>>Paul Smith
>>
>>Your Local Computer Specialist, Supporting Your Business When You Need It Most
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>>On 6 Apr 2013 18:04, "Mike Stirling" EMAIL ADDRESS HIDDEN 
>>EMAIL ADDRESS HIDDEN wrote:
>> Hi Paul,
>>
>>Yes I am doing custom code for that, and it seems likely that it will form the basis for 
>>the AVR branch of OpenTRV. The mods I have done are to add an RFM23B and to break out the 
>>programming pins to an external header. These are currently just wire-mods, but I am considering 
>>whether there is any scope for fitting headers that would plug in to a small custom board, which 
>>would make assembly easier. I'll be writing all this up online soon and publishing the code, 
>>but I wanted to make some actual progress first.
>>
>>Any AVR programmer will do, but I would recommend the Atmel one, which is the one you 
>>linked to. Probably easier getting it from Farnell or RS.
>>
>>I'll keep you posted on the RPi board. Still waiting for the blank boards to come back.
>>
>>Mike
>>
>>On 06/04/13 13:41, Paul Smith wrote:
>> Hi Mike,
>>
>>After the opentrv chat/google hangout last thrusday.
>>
>>I've ordered 5 of the Comet Sparmatic TRV's they came with better WAF which is always 
>>important. I understand that you are building new code for the device.
>>
>>What else would i need to get me going. I have a Rpi so believe that you have built a radio 
>>board for it. Which i would like to buy. I also know that you have add a radio module to the 
>>commet. Is this a rfm23b
>>
>>I think i need something like this 
>>http://store.atmel.com/PartDetail.aspx?q=p:10500054#tc:description -> http://gizmosnack.blogspot.se/2013/04/tutorial-nrf24l01-and-avr.html] 
>>can you point me in the right direction.
>>
>>Thanks in advance for your help.
>>
>>Regards
>>
>>Paul
>>
>>
>> 
>>
>> 
>>
>>
>>
>>
>>
>>
>> 
>>-- 
>>Paul Smith
>>
>>Your Local Computer Specialist, Supporting Your Business When You Need It Most
>>
>>We also now do Portable Appliance Testing, if you would like to know more please drop us 
>>a line.
>>
>>Tel:- 0845 009 6226 
>>
>>This email and any attachments may be confidential and/or privileged. Everything is 
>>intended for use of the addressee only. If you receive this message in error then you must not 
>>print it or pass it on to anyone else or use the information it contains. Please inform 
>>Phoenix Technology UK of the error by email or by telephoning (+44)(0)845 009 6226. Please 
>>then delete all copies from your system.
>>If you are not the intended recipient then you must not use the information in the 
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