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6 Replies Last post: Nov 19, 2008 4:28 AM by vader

Lock out volume8 at certain times

Nov 4, 2008 5:37 PM

Click to view dreisler's profile dreisler 1 posts since
Nov 4, 2008

Hello I have a nexia sp and nexia cs connected together and we have the system working. However now we would like to add a remote volume control with a volume 8 however the area we are putting the volume 8 is out in the public and we want to have some way we can turn off/lock out the volume 8 so someone doesn't start playing with the volume who is not suppose to. We were looking for a way to do this remotly but not have to change settings around everytime.


Any ideas?

Click to view vader's profile vader 68 posts since
Mar 4, 2008
1. Re: Lock out volume8 at certain times Nov 5, 2008 4:10 AM
To Dreisler.

1. I have been running a system for years with no problems where I use a keyswitch to turn on/off the power to the select 8 so that managers can recall a set of preset volumes.

When you turn the power on to the select 8,it resyncronises itself with what is in the nexias and can be adjusted from there.A volume 8 or VS 8 should be no different.

Just remember to have the volume 8 online when programming or uploading files.

2. If you are running Davinci on a local PC, just add a preset for the volume 8 with the relevant data in it ( which volume controls you want to control) and a preset with no controls in the volume 8.

You just toggle between the two presets. You can take it further and only give access to certain controls by having more presets.

3. Go all out with a VS 8 and use the 1-7 of select part as an 7 digit binary unlock and use the 8 of select as a reset to lockout. Logic and presets would be required.

Hope it helps,

Garth

Click to view brentadams's profile brentadams 5 posts since
Nov 15, 2008
2. Re: Lock out volume8 at certain times Nov 16, 2008 12:11 AM
dreisler,

Here I have for you example files. In the example, to answer to the problem of doing it remotely, I have provided for a Volume 8 and a Select 8. The S8 you would place where ever you want to have the ability to enable/disable the V8. One other trick you can pull off is using the same method of disabling the V8 you can also effectively reprogram the V8 to control different sources. The volume 8 is a block in Nexia that can be altered via presets. This is what I am using in my example to effectively disable the V8. In the preset to disable the V8 I am clearing all of the "things" it controls, then to enable the V8 I restore them. You could however, have a different preset so that in the Enable process, once you "insert the key" which I explain in the program, you can select a different set of things for the V8 to control by having multiple 3-way And gates (with the Logic State and the Flip Flop gate being attached to each potential And gate) and the variable position on the And gate going to a different position of the S8. This new And gate would be attached to a second remote preset button with it's own preset to recall, or make your remote preset button have two buttons (Remote Preset Buttons have have up to 10 buttons). When this different position is pressed, it would call up an entirely different preset that would no only enable the V8, but change it.

Brent
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Click to view brentadams's profile brentadams 5 posts since
Nov 15, 2008
3. Re: Lock out volume8 at certain times Nov 17, 2008 1:49 AM
in response to: brentadams
I might also add that for my example to work properly every time, you would need to have a preset that sets the logic state to on in the disable V8 section that loads as the default startup preset. As you cannot have two presets load at startup, if you already have a preset that loads at startup add this logic state to that preset.

To address one more thing I forgot. You will want to "remove the key" after disabling or enabling the V8 by resetting the associated Flip Flop gate to off. For example, when you call the preset to enable the V8, in that same preset turn the status of the FF gate back to off. Now the key is removed.

Brent
Click to view vader's profile vader 68 posts since
Mar 4, 2008
4. Re: Lock out volume8 at certain times Nov 18, 2008 5:51 AM
in response to: brentadams

To Brent,

I was thinking more on the lines of the attached files.

A Punter/Patron is not going to spend too much time on trying to crack the seven digits of on/off.

But the Staff would like a quick exit to lock out the volume control.

I have however seen unattended students crack a 6 digit door lock in less than 30 minutes but I don't think that applies here.

Garth

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Click to view brentadams's profile brentadams 5 posts since
Nov 15, 2008
5. Re: Lock out volume8 at certain times Nov 18, 2008 8:00 AM
in response to: vader
The problem with what you are doing here, is it has no real security. Anyone could walk up and fool with it enough and get the proper bit of digits. Yes the logic could be as complex as you like. Whlie I'm not just going to share the files with everyone, I have at one point previously created a fantastic bit of logic using a select 8 so that you had to press things in order starting with a "magic sequence starter" to turn on a sound system. If you didn't put in the pin in the proper order it would reset so you would have to start over. Using my method you could make it as long as your heart desires.

I think, however that is not necessarily the goal of dreisler. I offer something simple yet one still has to have a bit of instruction so that anyone couldn't just walk up and screw with things. For that matter, go analog! Put a Volume 8 on the wall under one of those thermostat lock boxes.

Brent
Click to view vader's profile vader 68 posts since
Mar 4, 2008
6. Re: Lock out volume8 at certain times Nov 19, 2008 4:28 AM
in response to: brentadams

To Brent,

I did point out in one of my previous replies that there were three options I could think of at the time, and now there are four.

But that is what this forum is for after all. I do not know the lock box you are talking about.

I really think the simplest option is using a key switch to turn the +24 volt power from the RCB on or off to the V8,

and give a key to whoever needs to adjust things.

Garth

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