💬 Water Meter Pulse Sensor
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@rejoe2 A magnetometer doesn't need a magnet to work, my gas meter doesn't have a magnet and it works fine. Most all smartphones have magnetometers in them to sense direction. However your solution looks to work as well and probably with less code.
@dpcr Thanks for clarification.
Today there was a new post that may be of interest wrt. to the "green" LED sensing modification: https://forum.fhem.de/index.php?action=post;quote=702342;topic=71341.0;last_msg=702342
This one seems to be close to a "professional" solution also wrt. to the other parts used (but most likely not on a TCRT5000-Base)... -
I have a question and need some advise,
is it possible to expand the sketch to two meters.
In my case I want to combine a this Water Meter with a Gas Meter.
Can both meters use an interrupt, each?@rpunkt welcome to the MySensors community!
it depends on which microcontroller you use, and what type of interrupt.
Atmega328 can use pin 2 and 3 at the same time by merging the sketches. More/other pins can be used but that will require some code changes.
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I having problem to place the tcrt5000 on the correct place. Can anyone please show where to put it? Is it over the black (that spins every 0.5 l)?
I have this type of water meter
@smilvert
I also have same meter as the picture. Yesterday I installed my sensor
I took a TCRT5000 IR sensor, https://www.mysensors.org/store/water
A cap from a soda bottle, cut it so it fits above left red wheel(X0,0001) which means one lap i 1 liter
It works but it counts little bit wrong, I have change theif (interval<500000L)to
if (interval<2500000L)but anyway it counts about 3 times to much. I will check it later today
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@smilvert
I also have same meter as the picture. Yesterday I installed my sensor
I took a TCRT5000 IR sensor, https://www.mysensors.org/store/water
A cap from a soda bottle, cut it so it fits above left red wheel(X0,0001) which means one lap i 1 liter
It works but it counts little bit wrong, I have change theif (interval<500000L)to
if (interval<2500000L)but anyway it counts about 3 times to much. I will check it later today
@flopp
This didn't worked so well, I got a lot of errors everytime nRF was sending data, then I got one pulse.
Anyone know how to protect the digital input to NOT fall when nRF sends?
Wait, when I was writing this text :) I just remember that nRF is using Pin 2, is that correct?
I will try to use pin 3 instead, as interrupt pin -
@flopp
This didn't worked so well, I got a lot of errors everytime nRF was sending data, then I got one pulse.
Anyone know how to protect the digital input to NOT fall when nRF sends?
Wait, when I was writing this text :) I just remember that nRF is using Pin 2, is that correct?
I will try to use pin 3 instead, as interrupt pin -
@smilvert
I also have same meter as the picture. Yesterday I installed my sensor
I took a TCRT5000 IR sensor, https://www.mysensors.org/store/water
A cap from a soda bottle, cut it so it fits above left red wheel(X0,0001) which means one lap i 1 liter
It works but it counts little bit wrong, I have change theif (interval<500000L)to
if (interval<2500000L)but anyway it counts about 3 times to much. I will check it later today
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@flopp Nice. You don't use a green led? I tried that and it seems to work better but then I struggle with the mounting.
Need to try this again!
@smilvert said in 💬 Water Meter Pulse Sensor:
You don't use a green led? I tried that and it seems to work better but then I struggle with the mounting.
I am using IR to detect movements. Green LED is flashing eveytime the IR detects movement and Red LED is power for PCB.
I am using Digital Output from PCB to pin 2 or 3 on my UNO. I have tried both with INPUT_PULLUP and without, also tried 20K between Digital Output and GND. nothing is helpingHow do you use green LED with water meter?
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Any one used this approach? From the text I see that the node sleeps! How does it measures the consumption if the node is sleeping?
Thank you
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@mfalkvidd hello!
I was referring to this statement in the site:
"Use this mode if you power the sensor with a battery. In this mode the sensor will sleep most of the time and only report the cumulative water volume."
Thank you
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That is nice! But I would have to test it out! Probably that would make the node all the time awake during a long bath! Ok, it would not use the radio all the time, but I would like to know who that would affect the battery!
Thank you all for the feedback
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That is nice! But I would have to test it out! Probably that would make the node all the time awake during a long bath! Ok, it would not use the radio all the time, but I would like to know who that would affect the battery!
Thank you all for the feedback
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@flopp Did you ever manage to stabilize the readings? Am I understanding you correctly that the readings were fine but the transmission got the reading scrambled?
Did you try to find a magnetic field with the meter instead? I have a similar meter and I'm wondering how best to approach the problem. I've seen people hook up Raspberries and cameras to do OCR basically but that seems like way too complex for an easy problem.
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@flopp said in 💬 Water Meter Pulse Sensor:
TCRT5000 IR senso
I have not had good results using TCRT5000 IR sensor, did you?
@bjornhallberg well I still think this is the best approach to use RPI + OCRhttps://forum.mysensors.org/topic/1594/automatic-water-meter-reading-with-a-webcam
https://blog.m.nu/vattenmatning-med-raspberry-pi-och-webkamera/ -
While looking into the water meter I realized that we are getting a "smart" meter replacement soon. I'll see if I can speed up the replacement schedule. Anyhow, the replacement is a Kamstrup Multical 21 (https://www.kamstrup.com/en-en/water-solutions/water-meters/multical-21) which has several options for reading:
- Requesting the data via optical interface?
- Enabling the pulse function via optical interface, and then reading the IR pulse at 1imp/10lit.
- Reading the wireless mbus signal? (e.g. https://github.com/weetmuts/wmbusmeters)
