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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: Swish K400 control
Just
had another thougt on this. When the light sensor (LDR) is in use
<QUOTE>...the resistance falls as the light becomes
brighter...</QUOTE> therefor during the day the resistance
between control lines would be fairly low anyway, maybe not quite dead
short,
but till low enough for the circuit to have to be able to cope with
the
condition.
Stuart
-----Original Message----- From: Ian Lowe [mailto:ian@xxxxxxx] Sent: 16 February 2002 01:51 To: ukha_d@xxxxxxxSubject: RE: [ukha_d] Swish K400 control Having more of a delve here, there's still the potential for getting the curtains caught in an unknown condition... If you send a "close" whilst an open is in progress, or vice versa, it stops. This strikes me as exactly what could happen if someone inadvertently issues a web command, then does an "oh-shit" and clicks the opposite... rather than undoing the mistake, it would leave the curtains "hung" The document says however, if the signal condition is maintained, then the operation will happen anyway.. It's all down to the electrics I suppose.. does a perpetual "open" signal stress some component, or does it behave well when presented with a "maintained for a loooooong time" signal? Time for some testing I suppose, although I find myself not very inclined to risk blowing one of these guys, given the unlikelihood of getting it replaced easily. Stuart, did you notice whether the curtains opened/closed on the drop or rise of the 0V pulse? Ian. For more information: http://www.automatedhome.co.uk Post message: ukha_d@xxxxxxx Subscribe: ukha_d-subscribe@xxxxxxx Unsubscribe: ukha_d-unsubscribe@xxxxxxx List owner: ukha_d-owner@xxxxxxx Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
For more information: http://www.automatedhome.co.uk Post message: ukha_d@xxxxxxx Subscribe: ukha_d-subscribe@xxxxxxx Unsubscribe: ukha_d-unsubscribe@xxxxxxx List owner: ukha_d-owner@xxxxxxx Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
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