Water meter DIY sensor | ESPHome | Page 1

thorn geyser Jan 3, 2024, 2:53 PM

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I created a small sensor for reading out water meters with a rotary disk. I have the code working with the RPI PICO. If some of you want me to work on a certain type of MCU feel free to ask. I am currently working on a version for the esphome component, but a bit stuck there 😦
The following is the repo: https://github.com/martijnvwezel/3-phase-muino-sensor

I also have a bag of circle phoam but I cannot find more on the internet, so if you know a good side please tell 🙂

If you have questions feel free to ask!
Blog post: https://martijnvwezel.com/blogs/watersensor_sensor_based/

thorn geyser Jan 4, 2024, 11:59 AM

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PIns are 3V3 tollerant except of the power itself needs to be 3v3

torn oak Jan 4, 2024, 1:34 PM

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Nice work! What's the power consumption of the sensor ?

thorn geyser Jan 5, 2024, 7:19 AM

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thorn geyser I created a small sensor for reading out water meters with a rotary disk. I have...

I currently have no numbers yet. This weekend I will have some time to concreet numbers. From low power perspective could be lower than 1mA

torn oak Jan 5, 2024, 2:22 PM

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it's important to get some numbers, as I would need to power such sensor using batteries

thorn geyser Jan 5, 2024, 2:22 PM

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I made a mistakae and the Light sensors are NOT 5V tollerant sorry for the confusion..

thorn geyser Jan 5, 2024, 2:24 PM

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torn oak it's important to get some numbers, as I would need to power such sensor using b...

Yes the Idea of this board was to make it in such a way it can run from a battery. Will give tonight an update based on the power it uses.

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The green led should use less than 1mA. The moment there is no rotation of the red ring it should flash less often. To save more power

thorn geyser Jan 5, 2024, 8:07 PM

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Continues led on and reading out sensor values: 1765uA when normal modus toggeling LED 691uA on a voltage of 3.272V

torn oak Jan 5, 2024, 11:26 PM

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tks!

thorn geyser Jan 14, 2024, 12:41 PM

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I am trying to minimize the power consumption, but Not sure if I can get it below 100uA

thorn geyser Jan 17, 2024, 1:09 PM

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I am working now on this project and I wonder how to get it as a esphome project fully working under esphome

thorn geyser Jan 21, 2024, 8:14 PM

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https://github.com/martijnvwezel/3-phase-muino-sensor/tree/master/5.ESP32

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I am working on a ulp version

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now some mem issues

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have to improve the amount of ram usaged

thorn geyser Jan 28, 2024, 3:37 PM

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The first ULP code finally runs on the MCU. With a esp32S3 I get 0.6mA with the led blinking.

Next step: getting a bug out of the ULP with the light sensor (and actually test the working of the lightsensors inside the ulp)

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Here the setup

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So it looks promising

thorn geyser Mar 3, 2024, 7:00 PM

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Small update:

Got a solution for the esp32 I2C bug

limpid zephyr Mar 10, 2024, 7:03 AM

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What are your thoughts on how well it would work with this water meter? @thorn geyser

thorn geyser Mar 16, 2024, 8:59 AM

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I have people saying it worked from them!

#Water meter DIY sensor