Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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Got a bit of a project I'd like to undertake using the raspberry pi. So anyone who knows their way around them give me a should.
Monies can be exchanged for your services
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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Shout*
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IvIarkgraham
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Registered: 27th Mar 04
Location: Ellesmere Port, Cheshire
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i always call them raspberry PEE AYE
no idea why? I know its PIE
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Rob_Quads
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Registered: 29th Mar 01
Location: southampton
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What is it your trying to do. I have a few round the house doing things like collecting temps from wireless xrf sensors
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pow
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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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Depends what it is but I'm happy to help
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willay
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Organiser: South East, National Events
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Registered: 10th Nov 02
Location: Roydon, Essex
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What are you trying to do?
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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Control numerous rf switches and pick up Temps via rf temp sensors. So the pi would switch on/off depending on the temp set. Just like the lightwave kit but with a better front end. Would also like to connect an energy monitor.
I know it's not quite as simple as I've written it
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willay
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Zwave + https://home-assistant.io/
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willay
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Need some idea of what sort of things you want to monitor and what sort of things you want to turn off?
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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Needs to able to switch a 5amp load. Want something bespoke really. I know there are systems out there already but I want to design my own UI, tailored to what I want.
I'm installing lightwave at the moment to control infrared heaters but it dosent suit the places it's going in
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willay
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bespoke makes it hard to maintain, at least with one of these opensource projects you'll have updates most of the time, also less labour imo. These systems can interact with anything, just need the right gizmos to switch on
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Dom
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Registered: 13th Sep 03
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Appropriate transceiver with serial connection (/SPI) and a relay board (plenty of these about, alternatively trigger them directly from the GPIO) then couple it together with Python (easiest to use on a RPI).
Arguably you could use an Arduino for this, which would probably be a more efficient way of doing it, but it'd be a lot more work plus you'd still need something to handle the frontend UI.
What RF switches and sensors are you planning to use?
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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Fuck knows, hence why I'm asking those in the know. If anyone is interested in taking it on then let me know and I can email you a more specific list of requirements. Like i said, I'm happy to pay for your time.
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willay
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what sort of temps are you trying to read? air temps? water temps?
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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Air
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willay
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okay and what do you want to switch on, central heating or something?
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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Electric Heaters. Boiler. Electronic TRVs. Numerous things. The UI and monitoring is the important thing though really. I could probably follow some guides and sort the rf switching but not the rest of it
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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Sorry to dig up this old post but I've just got myself an Arduino Uno after finding a real world reason to actually need one..
I've had a PI before but never really found a good use for it and the fact its a 'full blown pc' that requires an OS and therefore a startup and shutdown sequence means its not that useful for logic and sensor based projects where as this is exactly what the Arduino was created for.
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willay
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I dont think a arduino would be suited to what Gary wishes to do
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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Why not? If its just monitoring inputs and making decisions it sounds EXACTLY what he should be using 
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willay
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quote:
Originally posted by DaveyLC
Why not? If its just monitoring inputs and making decisions it sounds EXACTLY what he should be using
Needs to design a nice UI, not something on a small LCD screen. I would hazard a guess and say he'd probably want to access it remotely by means of a web interface/app on a phone, which the Pi would be more suited for as its not exactly rocket science to get linux installed with apache.
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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It could be done with the DataLogger/Net shield, post the values to a simple php service or FTP them.. Have a website to manage it
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willay
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Doesn't sound like its the right tool for the right job.
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DaveyLC
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Location: Berkshire
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I suppose that depends how capable the user is
Clearly the PI is a fully-fledged PC, you can write thick applications with UI's but if that's not your forte you're going to struggle.
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willay
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Mmm yes and no, it wasnt about the users capability. What I'm talking about it not reinventing the wheel when there is a perfectly good wheel to already use.
As I posted ages ago in this thread, I'd buy a pi3, load linux, install home-assistant. Gary has already said there are RF switches/sensors to read so you would need some sort of 'rf dongle' to read, however I'm not 100% on that sort of technology. Instead I would be looking at zwave:
zwave switch: http://www.vesternet.com/z-wave-aeon-labs-micro#fo_c=521&fo_k=fb2ec43606c48f418188e7d3073f5046&fo_s=gplauk
Dongle (plug into Pi3): http://www.uk-automation.co.uk/z-wave-aeon-usb-series-2-adapter-with-battery/
Unsure how/where the tempature is being taken, so I'll just dump this here which also reads light/presence and a bunch of other stuff: http://www.vesternet.com/z-wave-aeon-labs-multisensor-gen5?gclid=CKqHjb_rjtACFWIq0wodruMM0Q#fo_c=521&fo_k=797f246a045c3b929a12608cca44b7c4&fo_s=gplauk
Beauty of z-wave is how it meshes, so other z-wave devices can help you reach other z-wave devices that are further away. Home-assistant's interface can be fucked about with massively, but it also has a REST API by default, so if you are handy you can code your custom php website or whatever and just trigger stuff from the API.
No breadboard in sight
 
[Edited on 04-11-2016 by willay]
[Edited on 04-11-2016 by willay]
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