Post AiHlFyXewapFaAwcim by rogerparkinson@mastodon.nz
(DIR) More posts by rogerparkinson@mastodon.nz
(DIR) Post #AiHDx1fnmSw5Ix6rJI by vik@mastodon.nzoss.nz
2024-05-26T08:01:33Z
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Next #HomeAssistant project is a 15 tonne water tank level monitor. So, your thoughts:
(DIR) Post #AiHFdLLZ7nvARDO1ke by futuresprog@mastodon.nzoss.nz
2024-05-26T08:20:14Z
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I asked this same question here last year and I believe they said the best thing was an inflow and an outflow sensor. Ultrasonic sensors would get moisture issues. And 15 tonnes? Good luck. I just went and searched back and can’t find it. I didn’t delete my posts. Don’t know where it is. Maybe the index doesn’t go back far enough.@vik
(DIR) Post #AiHGeQLS7wg8BQPf3g by fishidwardrobe@social.tchncs.de
2024-05-26T08:31:50Z
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@vik isn't that quite heavy for a sensor? ;)
(DIR) Post #AiHHcRSt5mZx21Vdke by vik@mastodon.nzoss.nz
2024-05-26T08:42:44Z
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@fishidwardrobeIt's for a tank. So it has to be heavily armoured with a garden shed welded on top ...
(DIR) Post #AiHICrMEIkuvlFlCrY by fishidwardrobe@social.tchncs.de
2024-05-26T08:49:01Z
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@vik milspec?
(DIR) Post #AiHIMQwZMXKsjgK6Km by vik@mastodon.nzoss.nz
2024-05-26T08:51:01Z
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@futuresprogFarmgeek did one with ultrasonics a few years back. Seemed to work for a couple of years at least. I'm more concerned about the buildup of spider webs - that's what killed the old greenhouse electronics. Ironically the dodgy homebrew conductivity probes survived intact!
(DIR) Post #AiHIikkiOWCaXhQB0K by vik@mastodon.nzoss.nz
2024-05-26T08:54:58Z
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@fishidwardrobeAs in an elephant being a milspec mouse? I have been known to slightly over-engineer things sometimes (see Arduino-activated 5kg Rat Flattener project, and yes it would flatten a 5kg rodent).
(DIR) Post #AiHNrLJ2s7xK01OUmO by rogerparkinson@mastodon.nz
2024-05-26T09:39:42Z
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@vik built my own using an ESP32 and a JSN-SR04T ultrasonic thingy. Works well.
(DIR) Post #AiHNrMWYLOM3mCinTM by vik@mastodon.nzoss.nz
2024-05-26T09:52:14Z
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@rogerparkinson I have 05's which don't seem to work at 3V3 but I know a place I can swap some over tomorrow. I may just stick multiple options on the same device. Belt & braces.
(DIR) Post #AiHlFyXewapFaAwcim by rogerparkinson@mastodon.nz
2024-05-26T14:13:56Z
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@vik yes, I run mine at 5V. The signal to the ESP32 did not need a level shift. My ESP32 is on a dev board with a USB port so that’s how I power it. I take power for the ultrasonic off the 5V pins on the board.
(DIR) Post #AiNT6oVwE1EveJNfF2 by vik@mastodon.nzoss.nz
2024-05-29T08:19:43Z
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Ultrasonic thingy it is. Managed to hook an ancient MaxSonic up to a Pi Pico W and get meaningful results, so I'll figure out a way to waterproof everything and still let the squeaks out.