If i had to write this for a chinese forum,
i would get the assistance of someone who could write Chinese.
I would be unlikely to be able to read it myself.
I wouldnt know if it made sense or not.
One of the things that are curious, is the interlocking arrangements of the switches.
As Mikebits has said,
couldn't the customer have a "do not disturb" sign, and flip it over for "clean" ?
Well, the customer could, if the card were regularly checked by the cleaners.
But this arrangement (i guess) is supposed to operate a radio sender, to inform the staff.
But Mikebits raises a good point,
namely that a card has only two sides,
so why have two switches with interlocks ...?
Maybe the original poster doesnt want two switches,
he wants to use switches with two positions, " ON - OFF - ON "
and maybe this got lost in the translation.
Why have two switches with interlocks ?
I think he only needs one switch per box.
If i am wrong, i assume he will soon say so.
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So, one switch ... yes ?
maybe.
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It's better to show the status in both side.
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I am going to assume that this means an LED on each side, one for "Please Clean"
and the other for "Please do not disturb"
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What else could it mean ?
Well it could mean that the status should be shown at the customers box,
and also at the cleaners room.
Yes, i think thats it.
Again, not obvious, but better than i could put it using Mandarin.
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Initially i was thinking of one relay, but now i think two might be needed.
Also, the battery conservation ... Mikebits, that arrangement uses current all the time.
An arrangement where a cap charges, then stops taking current would only use leakage.
Such an arrangement could switch the already charged cap, to one of two relays.
The relay would only close for a short interval, but enough to send the info to
the staff.
As to the LED current, i think that could be minimised.
A small LED might light adequately on maybe 2000 ohms. Maybe even a higher resistance.
If the staff return the box to "OFF" then the battery might last a month or more.
I dunno that the box needs to send any signal for "OFF"
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One more question, will the remote sender be using the same battery as the LEDs and relay(s) ?
Of course it will.
And will the remote sender have to send different signals for "CLEAN" or "OFF" or "DONT DISTURB"
No, only for "CLEAN" or "DONT DISTURB"
This has been re-written a few times.
I know it is untidy.
Cheers, John