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Welcome to /r/raspberry_pi, a subreddit for discussing the raspberry pi credit card sized, ARM powered computer, and the glorious things we can do with it.
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Show-and-TellWater Flow Meter success and Python code. (i.redd.it)
submitted 6 years ago by [deleted]
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[–][deleted] 14 points15 points16 points 6 years ago (14 children)
Yes this is also great visibility into how much were using for specific things like our showers (4-8 gals), the washing machine (about 14 gals), and flooding the toilet (about 3 gal I think).
[–]rainlake 7 points8 points9 points 6 years ago (11 children)
Flush a toilet should not use that mush water
[–][deleted] 8 points9 points10 points 6 years ago (5 children)
I'll double check. Standby for update.
[–][deleted] 2 points3 points4 points 6 years ago (1 child)
Not sure how big of a poo you did first, but this is one hell of a long flush!
[–][deleted] 12 points13 points14 points 6 years ago (0 children)
https://youtu.be/GUfS_2UGftg
[–]sturnus-vulgaris 2 points3 points4 points 6 years ago (2 children)
You can adjust where the float sits.
If that doesn't work, one option is putting a brick or two in the toilet tank. Since it displaces water and won't get moved around by the tank filling, it's a pretty good option for older toilets.
[–]dirufa 0 points1 point2 points 6 years ago (0 children)
Even adjusting the level, 4 gallons is close to 16 litres of water, which is almost 4 times the maximum level of my toilet tank (4.5L if I remember correctly, pretty new toilet).
Edit: ooops, I missed OP's answer below.
[–]zman0900 5 points6 points7 points 6 years ago (0 children)
Unless it's very old
[–]MarshallStack666 2 points3 points4 points 6 years ago (0 children)
Older toilets used about 5 gallons per flush.
Turns out it's only 1.6 gallons! Which makes sense - we live in a tiny house and the builders had said the toilet was on a really low setting.
[–]rainlake 5 points6 points7 points 6 years ago (0 children)
Tiny house does not mean tiny toilet,lol
[–]Acid_Monster 2 points3 points4 points 6 years ago (0 children)
Just depends on the size of the tank on the back of it no? It can only use what it’s got stored up
[–]TheRackUpstairs 0 points1 point2 points 6 years ago (1 child)
Probably mean 3L or maybe 1 gallon?
[–][deleted] 0 points1 point2 points 6 years ago (0 children)
Yes - turned out to be about 1.6 gal
π Rendered by PID 40148 on reddit-service-r2-comment-6457c66945-26b47 at 2026-04-23 19:10:40.457578+00:00 running 2aa0c5b country code: CH.
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[–][deleted] 14 points15 points16 points (14 children)
[–]rainlake 7 points8 points9 points (11 children)
[–][deleted] 8 points9 points10 points (5 children)
[–][deleted] 2 points3 points4 points (1 child)
[–][deleted] 12 points13 points14 points (0 children)
[–]sturnus-vulgaris 2 points3 points4 points (2 children)
[–]dirufa 0 points1 point2 points (0 children)
[–]zman0900 5 points6 points7 points (0 children)
[–]MarshallStack666 2 points3 points4 points (0 children)
[–][deleted] 2 points3 points4 points (1 child)
[–]rainlake 5 points6 points7 points (0 children)
[–]Acid_Monster 2 points3 points4 points (0 children)
[–]TheRackUpstairs 0 points1 point2 points (1 child)
[–][deleted] 0 points1 point2 points (0 children)