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  1. Thread: Power sockets

    by Karam
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    936

    Only problem is I forgot that the time...

    Only problem is I forgot that the time accumulator object is not in the present release of Cortex ..
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    I believe it was a GP2D15 that was used in the...

    I believe it was a GP2D15 that was used in the original testing and Vivian made some modification to a resistor at the back to increase range from the spec. value of 24cm to ~130cm. I can't find the...
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    Hacking a wireless handset is not out of the...

    Hacking a wireless handset is not out of the question - I had to do this myself for one application of large blinds, where I used a bunch of optoisolators between an ODO and the button pads on the...
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    Yes but we can't make them in volume. I'll send...

    Yes but we can't make them in volume. I'll send you the spec sheet.
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    You can adjust the PIR inhibit period from the...

    You can adjust the PIR inhibit period from the room behaviour advanced option menu, but I'm not entirely convinced that there may not be another issue so I'm awaiting to discuss with Vivian.
  6. Problem is that the output voltage from the...

    Problem is that the output voltage from the sensor at longer distances is dropping below what is needed (~0.7V) to turn on the transistor. A simple option might be to use a germanium transistor which...
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    As Chris suggests the camera images still somehow...

    As Chris suggests the camera images still somehow have to get to Cortex in order to make use of any of its processing and integration features. I think you'll probably be able to run 6 cameras ok if...
  8. Apologies, don't know what I was thinking .....

    Apologies, don't know what I was thinking .. You'll need an NPN transistor (and base resistor) between the IR unit and the digital input. So output signal goes via base resistor (say 1k-4k7) to base...
  9. It was Vivian who experimented with these but I...

    It was Vivian who experimented with these but I think it was just to adjust the range of a digital output variant (might have been the GP2D15). Looking through Farnell web site I find for example:...
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    Interesting to note that the Rain-Clik from...

    Interesting to note that the Rain-Clik from Hunter industries quotes a range of up to 244m. Seems pretty precise for a wireless technology :-). Just amused me, that's all. Probably a result of the...
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    A rain sensor would also be a good idea unless...

    A rain sensor would also be a good idea unless somehow integral (but how would you then know state of window?) ...
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    2,516

    IO Home Control appears to be an 868MHz band RF...

    IO Home Control appears to be an 868MHz band RF control protocol - looks to have been concocted by Honeywell but not adopted by so many. Honeywell themselves use other protocols. Anyhow it is not a...
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    That's a good point Chris. If the receiver unit...

    That's a good point Chris. If the receiver unit is not integral then there may well be access to the motors and perhaps even feedback. On the other hand one might have to be careful to check that the...
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    Yes it looks like the wall switch interface could...

    Yes it looks like the wall switch interface could be the simple solution and Cortex does have a dedicated object for managing that kind of appliance (using relays in place of the buttons). If Velux...
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    I understand what you mean about the pesky little...

    I understand what you mean about the pesky little fuses, but my opinion is that it probably is overkill to have an additional 3A MCB between each load and output. In the past we overcautiously used...
  16. Thread: Power sockets

    by Karam
    Replies
    10
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    936

    Yes I think a password object + time accumulator...

    Yes I think a password object + time accumulator object + perhaps a logic gate or two should be able to implement a function whereby, for a given day, every time you enter the password you toggle a...
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    Usually this happens if one object is overlapping...

    Usually this happens if one object is overlapping another (e.g some room or part of the other floor) and then you select the first object. So the dotted line indicates that it is hidden underneath....
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    It may still be worth while looking to see how...

    It may still be worth while looking to see how these relate to the standard temperature sensors in the vicinity. Its true that their readings will be coarser (I think you're going to get 0.4-0.5C...
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    I believe that the default is always that an...

    I believe that the default is always that an unconnected input effectively sits at '0' (False).
  20. Thread: Power sockets

    by Karam
    Replies
    10
    Views
    936

    Another possibility I suppose is to use radio...

    Another possibility I suppose is to use radio based HomeEasy socket adaptors.
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    As a general ramble: I have no experience with...

    As a general ramble:

    I have no experience with black bulb sensors but I'm a little bit sceptical on a theoretical basis until someone can provide practical experience. As mentioned, I believe...
  22. Yes for auto handover you will need the backup...

    Yes for auto handover you will need the backup connected to your IDRANet 'in parallel' i.e via its own PCU and to the always on spur (if you have a system with an IPD spur management structure). The...
  23. Marcus, Ah, I see. When you say 'set point' do...

    Marcus,

    Ah, I see. When you say 'set point' do you mean the set point that your cooling/heating is going to be working to or do you mean some fixed value which you have in mind, or some profiled...
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    Marcus, I'm not an expert on it but as a quick...

    Marcus,

    I'm not an expert on it but as a quick response: I imagine you'd set up your HVAC object as usual and then perhaps connect the zone valve signal to a virtual zone valve. In the API the...
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    Well I would imagine that the RS232 or Ethernet...

    Well I would imagine that the RS232 or Ethernet ASCII interfaces should be accessible via Cortex API. Probably Ethernet being easiest in the sense of not needing to connect to a serial port.
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