Using two wires to detect water - making your own water sensor

-

if want use 2 wires detect water in basement.  i wondering if can put 5v voltage regulator down on 1 probe, , 1/2 inch away put in other probe input atmega?  what if standing water next pipe?  or somehow conducts ground?  will need put resistor on 5v line in case don't short out voltage regulator?

i'm wondering happens when water conducts ground - atmega see 5v if it's being pulled down ground?

i attached drawing of thinking.

edit:  i see replies missed couple of details:  see reply in post #11.

i think pullup resistor on input pin, gnd wire nearby, better.
signal read high until water allowed contact gnd wire.
experiment digitalread , analogread.


Arduino Forum > Using Arduino > General Electronics > Using two wires to detect water - making your own water sensor


arduino

Comments

Post a Comment

Popular posts from this blog

VIDIOC_S_FMT error 16, Device or resource busy - Raspberry Pi Forums

-
dear all, working on image processing using raspberry pi, have installed intex usb web camera on raspberry pi. have used basic python script of image processing https://www.cl.cam.ac.uk/projects/raspb ... first.html required libraries installed on raspberry pi. script code: import imgproc imgproc import * # open webcam take pictures camera = camera(160, 120) # open viewer window display images viewer = viewer(160, 120, "the first step") # take picture camera img = camera.grabimage() # display image in viewer viewer.displayimage(img) # iterate on each pixel in image x in range(0, img.width): for y in range(0, img.height): # value @ xth column , yth row, place intensities variables red, green, blue = img[x, y] # test find colour dominant if red > green , red > blue: # red dominant, set pixel red img[x, y] = 255, 0, 0 elif green > red , green > blue: img[x, y] = 0, 255, 0 else: # if red or gr
Read more

using a laptop skeleton to build a pi laptop - Raspberry Pi Forums

-
Image
i have laptop dead motherboard . can remove components laptop , in anyway possible connect raspberry pi inbuilt display , keyboard on laptop ? (and touchpad if possible). (i figured remove components inside , fix pie inside , use extended usb cable , connect available usb ports respective holes in laptop skeleton, same headphone out ) . i'm noob when comes pi . on topic appreciated if screen lvds type may possible use screen installing converter board. this: http://www.ebay.com/itm/hdmi-dvi-vga-dr ... 3027&rt=nc need model number of screen , ask seller if work. or search ebay using brand , model number. assuming screen in working order..... back-light not burnt out etc.. other devices...... can used if have usb interface not part of motherboard. have make connector. raspberrypi
Read more

Forum for Joomla? - Joomla! Forum - community, help and support

-
heya, i need forum joomla works community builder , not joomlaboard. im using jb right now, , not working me >< what other *proper* installations there available? i recommend smf, that's forum using here, see link on bottom of page. there's called smf/joomla "bridge" available, see http://extensions.joomla.org/component/ ... itemid,35/ Board index Joomla! Older Version Support Joomla! 1.0 Extensions - 1.0.x Components
Read more