Project built based on an old D-Link router enclosure.
It is a Raspberry Pi 3 running Home Assistant with a RPi GPIO Gateway.
Dedicated power supply for the radio, wired through a 5v to 3.3v regulator from the 3A 5V power supply.
Ethernet and 2 USB ports available for connections.
No soldering.
Easy to build with some Hot Glue... took me 3 hours.
thanks @gohan I solved the problem by changing the power supply...
Now I'm powering through USB using a phone charger... so I'll never know if it was a soldering problem on VIN or a low current problem from the other disassembled phone charger... but it is working now...
Thanks for the help...
I had just cleaned it!!! My wife gave up caring about this desk...
I found my multimeter fuse was burned... so I wired its base poles and now I can measure:
Sleeping + Reed Disconnected - most time 6 uA
Sleeping + Reed Connected - most time 9 uA
When sending new status to gateway - 25 - 230 uA (around 140 uA most times)
Sending time was less than 1 second.
2 AA will give me 29 years (battery certainly will die first)
2 AAA - 12 years.
1 CR2032 - 2,5 years.
Thanks for the help...
Hi.
is this thread still alive?
Can I use this to solve my problem?
This is the problem:
What I need:
Yes, I understand how to make a reed talk to my Home Automation, but I don't see any wires outcomming from those Class D @zboblamont posted above.
My Newbie question was about those Class D beeing a reed sensor, or electronic switch, that sends a open/close signal or if I would need a DIY way to read a ordinary water flow meter...
But after check Datasheet from V200H I could notice a small plug on top and the wired pulse info... so It would act like a reed sensor with a pulse for each liter spent!
Now I got it.
But How much does it cost???
And won't be better an external sensor, just like that I posted, called Flume Water Monitor, once Class D could lower pressure from system?
Sorry about newbie question, but how could I read water flow on Home Assistant using those Class D? Do they send measurement wirelessly or do I need to build some reading sensor outside?
By the way, have you seen Flume Water Monitor? For $ 199,00
It has already been integrated with HASS
https://www.home-assistant.io/integrations/flume/
@chrismyers81 and @TD22057, from arduino forum, found a way to use it. Check here:
https://forum.arduino.cc/index.php?topic=256231.msg2494469#msg2494469
But this rope will certainly disagree with my wife's idea of beautiful decor! 
Despite all the work on finding the best place to place the sensor, accidents can occur, of course, but have those people worked on finding that place properly?
I think the best way avoiding those disasters is reading the main water flow and create automations based on volume of water, linked with others events, just like garden irrigation, people in the bathrooms, pool filling, car wash, time of day and, of course, flood sensors at strategic points. This is the way I will do!
The problem is how to measur water flow without adding chinese components in contact with your water!
Great work, and thanks for the quick answer!
I will try using it...
I noticed you have coded a sonar sensor library as well.
I have another projeto for auto flushing an urinal, and got this sensor:
https://www.aliexpress.com/item/32332773388.html?spm=a2g0s.9042311.0.0.3b60b90avbfLZ9
Could it work with your library?
Thanks again!!!
Great job @TD22057
Could you share your sketch???
I´m working in something similar, but without the water sensor.
The valve is similar as well, buy it has 3 way, but still with 5 wires.
Do you remender, or could check, how did you configured the valve sensor? Debouncering or not?
I want select water from two different places, so the 3 way...
My project has a button to local valve operation, two leds to indicate from where water is comming, H-bridge to control the valve motor, and I use Home Assistant receiving and controlling valve status, and receiving the signal from valve´s status sensor.
Here is my code:
#define MY_DEBUG
#define MY_RADIO_NRF24
#define MY_REPEATER_FEATURE
#define MY_NODE_ID 10
#include <SPI.h>
#include <MySensors.h>
#include <DHT.h>
// #include <Bounce2.h>
// PINAGEM
#define int1 6 // ATUADOR PRA H BRIDGE
#define int2 7 // ATUADOR PRA H BRIDGE
#define button 4 // BOTAO LOCAL PARA MUDANÇA
#define info_rua 11 // SENSOR RETORNO DA VALVULA QUANDO RUA SELECIONADO
#define info_cist 12 // SENSOR RETORNO DA VALVULA QUANDO CISTERNA SELECIONADO
#define led_rua 9 // LED ACENDE PRA ÁGUA DA RUA
#define led_cist 10 // LED ACENDE PRA ÁGUA DA CISTERNA
#define CHILD_ID_ACT 0
#define CHILD_ID_ESTADO 1
// MOTOR
boolean buttonState = LOW;
int rotDirection = 0; // 0 PRA CISTERNA E 1 PRA RUA
int pressed = false;
bool initialValueSent = false;
bool state;
//sensores de fim de curso
int valor_rua = 0;
int valor_cist = 0;
MyMessage msgSwitch(CHILD_ID_ACT, V_STATUS); // SWITCH PARA MUDAR O ESTADO
MyMessage msgState(CHILD_ID_ESTADO, V_TRIPPED); //SENSOR DO ESTADO
void presentation()
{
sendSketchInfo("Seletor Agua", "1.0");
wait(200);
present(CHILD_ID_ACT, S_SPRINKLER);
wait(200);
present(CHILD_ID_ESTADO, S_SPRINKLER);
}
void setup() {
pinMode(int1, INPUT);
pinMode(int2, INPUT);
pinMode(button, INPUT);
pinMode(info_rua, INPUT);
pinMode(info_cist, INPUT);
pinMode(led_rua, OUTPUT);
pinMode(led_cist, OUTPUT);
//definir estado inicial da valvula
digitalWrite(int1, LOW);
digitalWrite(int2, HIGH);
digitalWrite(led_rua, LOW);
digitalWrite(led_cist, HIGH);
send(msgSwitch.set(0));
// setup do botao e dos sensores de fim de curso
digitalWrite(button, HIGH);
digitalWrite(info_rua, HIGH);
digitalWrite(info_cist, HIGH);
}
void loop() {
valor_rua = digitalRead(info_rua);
valor_cist = digitalRead(info_cist);
// valores iniciais
if (!initialValueSent) {
Serial.println("Sending initial value");
send(msgSwitch.set(0));
send(msgState.set(0));
Serial.println("Requesting initial value from controller");
request(CHILD_ID_ACT, V_STATUS);
wait(2000, C_SET, V_STATUS);
}
// ler estado do botão
if (digitalRead(button) == true) {
pressed = !pressed;
}
while (digitalRead(button) == true);
wait(20);
// se botao pressionado
if (pressed == true & rotDirection == 0) {
digitalWrite(int1, HIGH);
digitalWrite(int2, LOW);
digitalWrite(led_cist, LOW);
rotDirection = 1;
send(msgSwitch.set(1));
wait(20);
}
if (pressed == true & rotDirection == 1) {
digitalWrite(int1, LOW);
digitalWrite(int2, HIGH);
digitalWrite(led_rua, LOW);
digitalWrite(led_cist, HIGH);
rotDirection = 0;
send(msgSwitch.set(0));
wait(20);
}
if (valor_rua == 1) {
digitalWrite(led_rua, HIGH);
}
if (valor_rua == 0) {
digitalWrite(led_rua, LOW);
}
if (valor_cist == 1) {
digitalWrite(led_cist, HIGH);
}
if (valor_cist == 0) {
digitalWrite(led_cist, LOW);
}
}
void receive(const MyMessage &message) {
if (message.isAck()) {
Serial.println("This is an ack from gateway");
}
if (message.type == V_STATUS) {
if (!initialValueSent) {
Serial.println("Receiving initial value from controller");
initialValueSent = true;
}
state = message.getBool();
if (state == 0) {
digitalWrite(int1, LOW);
digitalWrite(int2, HIGH);
digitalWrite(led_rua, LOW);
digitalWrite(led_cist, HIGH);
rotDirection = 0;
send(msgSwitch.set(0));
}
if (state == 1) {
digitalWrite(int1, HIGH);
digitalWrite(int2, LOW);
digitalWrite(led_rua, HIGH);
digitalWrite(led_cist, LOW);
rotDirection = 1;
send(msgSwitch.set(1));
}
}
}
Hi!
After 1 year, Did this post result in any sketch?
I want to use a similar valve @executivul suggested, with 5 wires as well!
Did you get success using mysensors @KimmoHop ?
Tks
I had just cleaned it!!! My wife gave up caring about this desk...
I found my multimeter fuse was burned... so I wired its base poles and now I can measure:
Sleeping + Reed Disconnected - most time 6 uA
Sleeping + Reed Connected - most time 9 uA
When sending new status to gateway - 25 - 230 uA (around 140 uA most times)
Sending time was less than 1 second.
2 AA will give me 29 years (battery certainly will die first)
2 AAA - 12 years.
1 CR2032 - 2,5 years.
Thanks for the help...
Great!!! Got it working, but can't measure the consumption...
My multimeter shows always 000.
The sensors is working fine and reporting properly while connected to multimeter, but always 0 current...
Tried 200u, 2000u, 20m and 200m, always reporting zero... Is is that low?
Did I connect something wrong??? (multimeter in series with positive battery pole and circuit line in (Radio+APM+1M ResistorPin3)
Or is my aliexpress multimeter that bad???
Thanks for sharing this awesome project...
I want to install all my windows with reed sensors powered by 2AA alcaline batteries and would like they last more than 5 years... and I think your project fits perfectly
How long do those used batteries last?
Did you implement what @Nca78 suggested?
I have already cut LED and Power Regulator from Arduino Pro Mini 3.3v and will change bootloader.
Have you choosen the best (lowest power consumption) bootloader to use?
I would try the MYSBootloader_1MHz.hex from MySensors GitHub.
Would the optiboot_atmega328_01M_009600_NOLED from GertSanders better for low power?
Thanks for the help...