tag:blogger.com,1999:blog-4069588774168331111.post7235145169205350518..comments2024-03-23T08:20:56.771-07:00Comments on Tinkering Lab: Automatic Christmas Tree WatererBillhttp://www.blogger.com/profile/15424392048677826647noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-4069588774168331111.post-58221585184425695822016-01-14T08:35:24.233-08:002016-01-14T08:35:24.233-08:00I like the idea of using a float sensor in the tan...I like the idea of using a float sensor in the tank. Unfortunately, my tree stand (and probably most other stands) doesn't have enough clearance around the tree to fit a float sensor. I have about 1/4"-1/2" clearance. The exposed wires pose no danger. The Arduino only applies 5V to the wires. Even with wet skin the human body has a resistance of 1000 ohms. That means, worse case, if you touch a "live" 5V wire with wet hands you'll get a shock of 0.005 amps. It takes 0.01 amps for a painful shock. All you'd feel is a tingle. Less than licking the terminals on a 9V battery. Plus, those sensor wires aren't always live.Billhttps://www.blogger.com/profile/15424392048677826647noreply@blogger.comtag:blogger.com,1999:blog-4069588774168331111.post-28563670469671455882016-01-14T07:24:16.034-08:002016-01-14T07:24:16.034-08:00I know this post is old, but I wonder if two float...I know this post is old, but I wonder if two float sensors(one for the tree and one for the tank might be a better option than the exposed conductive wires.<br /><br />http://www.ebay.com/itm/Tank-Pool-Water-Level-Liquid-Sensor-Float-Switch-Switcher-GOOD-New-GP-/331510410224?hash=item4d2f8f6bf0:g:0bcAAOSwMmBVo7i6KevinRhttps://www.blogger.com/profile/17083691907048601507noreply@blogger.comtag:blogger.com,1999:blog-4069588774168331111.post-75848555361544268242012-12-27T12:30:05.448-08:002012-12-27T12:30:05.448-08:00I did something similar a few years ago, but with ...I did something similar a few years ago, but with a decidedly less technological spin to it. Using a siphon, I had a bucket of water with a tube that led into our tree's stand, and a line marking the Max fill point on the bucket. It worked pretty well and we hid it behind faux present. <br /><br />I didn't end up doing it this year out of laziness.<br /><br />As a side-note: The header spacing on the Arduino was an accident. It wasn't intended to be like that, but happened and the creation of lots of shields made it stick. I agree, it's really irritating.Aaronhttps://www.blogger.com/profile/03821060961655934831noreply@blogger.comtag:blogger.com,1999:blog-4069588774168331111.post-55291646256086424272012-12-27T10:54:39.508-08:002012-12-27T10:54:39.508-08:00Nerd alert!!!
That's pretty cool though. Mayb...Nerd alert!!!<br /> That's pretty cool though. Maybe get longer piping so you can hide the water tank somewhere else, leave room for presents!Bruce Almightyhttps://www.blogger.com/profile/06338892258894347270noreply@blogger.com