Water and Prop's
Ole Man Earl
Posts: 262
Usually electronics and water don't mix very well.
Did you ever get in the shower and the water was either too hot or cold ?
How about a prop that senses the water temp, displays it in an LCD, and a few push buttons for control of some water mixing valves ? I have looked for such a device, but they are almost a thousand dollars ! Surely someone can come up with something a prop could do at a much lower price.
Set temp, wait till buzzer or whatever goes off, and enjoy your shower at the temp YOU want.
P.S. unit for safety sake, unit should be mounted OUTSIDE the shower !
Did you ever get in the shower and the water was either too hot or cold ?
How about a prop that senses the water temp, displays it in an LCD, and a few push buttons for control of some water mixing valves ? I have looked for such a device, but they are almost a thousand dollars ! Surely someone can come up with something a prop could do at a much lower price.
Set temp, wait till buzzer or whatever goes off, and enjoy your shower at the temp YOU want.
P.S. unit for safety sake, unit should be mounted OUTSIDE the shower !
Comments
I thought about designing something like this a while back until I found out there are valves for the shower that do this already through mechanical means. they make sure the preasure on hot and cold are kept the same so if someone flushes the toilet you do not get a surprise. can't type in a temperature though.
The control system could be in the shower(if law permits I know in saunas it is illegal to have the controls on the inside in Canada.) but you would want to use a water tight system to control it. Capacitive sensors would not be a good idea as water often tends to fool them into a false touch. A flexible menbrane like used on remote controls would be your best bet. spark fun sells them with spce for an led.
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Use something lower down in the food chain of processors. The prop has shown itself capable of much more than was expected, what if it decided to lock you in and raise, and raise the temerature because it senced your were going to dismantle it to build something else!
HAL lives again?
Closed Loop control circuits are a different matter. But passive sensing could do the trick.
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JMH