💬 Water Meter Pulse Sensor
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@mfalkvidd how looks the sensor now with the modifications? and how to wire this?
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I'm just getting this....
16:57:15.660 -> 10091 TSM:FAIL:RE-INIT
16:57:15.660 -> 10093 TSM:INIT
16:57:15.660 -> 10101 !TSM:INIT:TSP FAIL
16:57:15.660 -> 10103 TSM:FAIL:CNT=2
16:57:15.660 -> 10107 TSM:FAIL:DIS
16:57:15.713 -> 10111 TSF:TDI:TSL -
@ibibiuooui said in 💬 Water Meter Pulse Sensor:
!TSM:INIT:TSP FAIL
See https://www.mysensors.org/build/parser: There's a problem in the initialisation of your transceiver (whatever it may be). So first check wiring, see https://forum.mysensors.org/topic/666/read-this-first-it-could-save-you-a-lot-of-time for further details. If that doesn't help, imo you should open up a seperate thread.
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I am finally getting around to trying this out. I was playing with just trying to see if i can get the pulses. First thing i did was take an old compass and put it beside the meter and had someone turn on the water. I could definitely see the compass needle pull a little as the water was flowing. So I assumed that pull was enough to be detectable with my hall effect sensor. I have tried a couple, and just can't seem to get it to pick up.
If i use a magnet, simple code will detect the pulse and the green led on the sensor lights up.
But no matter where I put that sensor near the meter it just doesn't seem to detect it. Not quite sure what's happening.
The meter i have is this one.
https://www.badgermeter.com/resources/add29b88-1ffb-49c9-80ab-bb8697bd6d1a/absolute digital encoder product data sheet ade-ds-00183-en.pdf/Not sure if anyone has any recommendation on which hall effect sensor would be the best for this but ill take suggestions lol
My sensor I am testing with is
3144E Hall Effect SensorDoesn't have a sensitivity dial but the recommended one on this build page didn't either.
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I wanted to operate my water pulse meter on batteries and also get the water flow. The original design had the following issues with that:
- Incorrect flow calc: micros() was used to calculate the flow, however micros() wraps every 70 minutes which looks like a huge flow (which is then discarded in code)
- Volume calc: millis() wraps every 50 days which is not handled correctly either
- Too much current for battery use: The IR LED of the TCRT5000 is always on and the LM393 comparator is also taking a few mA's
- Could not report flow in sleep mode because millis() does not increment on sleep - need to do this based on calculation of total sleep time. We now simply calculate the number of pulses per minute and deduct the flow
- I also had issued with the data transport reliability, so I added error counters (which show up on the Gateway as distance sensors)
- I also wanted to provide a measurement counter to the gateway (that counts up each time a message is sent)
- The sensor will reboot itself when too many errors occur
So I modified the circuit of the IR sensor:
- Assumption that the wheel of the water meter turns slowly (takes at least a few seconds to turn around)
- We will wake up every 500 millisecond to turn on the IR LED connected to PIN 8. Pin 8 also powers the photo transistor that measures the reflection
- I removed the power from the opamp circuit that is linked to the photo transistor
- The voltage from the photo transistor is then read using an analog read on A1. Based on a threshold value we will deduct if the mirror on the water meter is in view
- Pin 7 is connected to a learning switch which will turn the device in a specific mode and the min/max values on A1 are used to calculate the value of the threshold (which is then stored in the EEPROM)
- After 30 seconds in learning mode, the new threshold is established and the LED on Pin 6 will show the actual on/off mirror signals, so you can see the pulses are correctly counted
- switch back the DIP switch on Pin 7 to bring back normal mode
- The circuit also contains the battery voltage sensor circuit (I am using a 1.5V battery and step up circuit). So the resistors used are 470k from + pole of battery to the A0 input and 1 M ohm from A0 to ground
/** * Created by Henrik Ekblad <henrik.ekblad@mysensors.org> * Copyright (C) 2013-2015 Sensnology AB * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors * * Documentation: http://www.mysensors.org * Support Forum: http://forum.mysensors.org * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * ******************************* * * REVISION HISTORY * Version 1.0 - Henrik Ekblad * Version 1.1 - GizMoCuz * Version 1.2 - changed BM: using low power separate circuit for infra red on pin 8 + analog A1 * * ISSUES WITH ORIGINAL CODE * Incorrect flow calc: micros() was used to calculate the flow, however micros() is wraps every 70 minutes which looks like a huge flow (which is discarded) * Volume calc: millis() wraps every 50 days which is not handled correctly * Too much current for battery use: The IR LED of the TCRT5000 is always on and the LM393 comparator is also taking a few mA's * Could not report flow in sleep mode because millis() does not increment on sleep - need to do this based on calculation of total sleep time * * MODIFIED CIRCUIT IR SENSOR * Assumption that the wheel of the water meter turns slowly (takes at least a few seconds to turn around) * We will wake up every second to turn on the IR LED (connected to PIN 8). Pin 8 also powers the photo transistor that measures the reflection * The voltage from the photo transistor is then read using an analog read on A1. Based on a treshold value we will deduct if the mirror is in view * Pin 7 is connected to a learning switch which will turn the device in continous mode and the min/max values on A1 are used to recalc the treshold * during a 30 second period. After this period the new treshold is established and the LED on Pin 6 will show the actual on/off mirror signals * * http://www.mysensors.org/build/pulse_water */ // BOARD: PRO MINI 3.3V/ 8Mhz ATMEGA328 8Mhz // Enable debug prints to serial monitor #define MY_DEBUG // Enable and select radio type attached #define MY_RADIO_NRF24 //#define MY_RADIO_RFM69 #define MY_NODE_ID 10 // hard code the node number #include <SPI.h> #include <MySensors.h> #define SENSOR_POWER 8 // pin that will provide power to IR LED + sense circuit #define IR_SENSE_PIN A1 // input for IR voltage #define BATTERY_SENSE_PIN A0 // select the input pin for the battery sense point #define LEARN_SWITCH_PIN 7 // switch (SW1 on battery module) to turn on learning mode (low==on) #define LEARN_LED_PIN 6 // LED feedback during learning mode (LED on battery module) #define LEARN_TIME 30 // number of seconds we will keep learn loop #define PULSE_FACTOR 1000 // Nummber of blinks per m3 of your meter (One rotation/1 liter) #define MAX_FLOW 80 // Max flow (l/min) value to report. This filters outliers. #define CHILD_ID 1 // Id of the sensor child (contains 3 subs: V_FLOW, V_VOLUME, VAR1) #define CHILD_PINGID 2 // ID of ping counter #define CHILD_ERRID 3 // ID of error counter #define CHECK_FREQUENCY 500 // time in milliseconds between loop (where we check the sensor) - 500ms #define MIN_SEND_FREQ 60 // Minimum time between send (in multiplies of CHECK_FREQUENCY). We don't want to spam the gateway (30 seconds) #define MAX_SEND_FREQ 1200 // Maximum time between send (in multiplies of CHECK_FREQUENCY). We need to show we are alive (600 sec/10 min) #define IR_ON_SETTLE 2 // number of milliseconds after we turned on the IR LED and we assume the receive signal is stable (in ms) #define EE_TRESHOLD 10 // config addresses 0 + 1 used for treshold from learning (loadState() returns only uint8 value) #define TRESHOLD_MARGIN 3 // additional margin before we actually see a one or zero #define RESETMIN 5 // number of cycle times (either 30 sec of 10 min) we consistently need to have transmission errors before we perform hard reset MyMessage volumeMsg(CHILD_ID,V_VOLUME); // display volume and flow on the same CHILD_ID MyMessage flowMsg(CHILD_ID,V_FLOW); // flow MyMessage lastCounterMsg(CHILD_ID,V_VAR1); MyMessage pingMsg(CHILD_PINGID,V_DISTANCE); // use distance to keep track of changing value MyMessage errMsg(CHILD_ERRID,V_DISTANCE); // use distance to keep track of changing value double ppl = ((double)PULSE_FACTOR / 1000.0); // Pulses per liter unsigned int oldBatteryPcnt = 0; // check if changed unsigned int minsendcnt = MIN_SEND_FREQ; // counter for keeping minimum intervals between sending unsigned int maxsendcnt = MAX_SEND_FREQ; // counter for keeping maximum intervals between sending unsigned int treshold = 512; // threshold value when to swap on/off for pulse unsigned long pulseCount = 0; // total volume of this pulse meter (value stored/received on gateway on pcReceived) unsigned long oldPulseCount = 0; // to see if we have received something boolean pcReceived = false; // received volume from prior reboot boolean onoff = false; // sensor value above/below treshold unsigned int intervalcnt = 0; // number of cycles between last period (for flow calculation) double flow = 0; // maintain flow double oldflow = 0; // keep prior flow (only send on change) unsigned int learntime=LEARN_TIME*2; // timer for learning period unsigned int learnlow = 1023; // lowest value found during learning unsigned int learnhigh = 0; // highest value found during learning boolean learnsaved = false; // have saved learned value unsigned long pingcnt = 0; unsigned long errcnt = 0; // error count unsigned int errcnt2 = 0; // error counter set to 0 when sending is ok void(* resetFunc) (void) = 0;//declare reset function at address 0 (for rebooting the Arduino) void setup() { // make sure a few vars have the right init value after software reboot pingcnt = 0; pcReceived = false; pulseCount = oldPulseCount = 0; // setup hardware pinMode(SENSOR_POWER, OUTPUT); digitalWrite(SENSOR_POWER, LOW); pinMode(LEARN_SWITCH_PIN, INPUT_PULLUP); pinMode(LEARN_LED_PIN, INPUT); // default is input because this pin also has SW2 of battery block // Fetch last known pulse count value from gateway request(CHILD_ID, V_VAR1); // Fetch threshold value from EE prom treshold = readEeprom(EE_TRESHOLD); if (treshold<30 || treshold>1000) treshold = 512; // wrong value in EEprom, take default Serial.print("Treshold: "); Serial.println(treshold); // use the 1.1 V internal reference for the battery and IR sensor #if defined(__AVR_ATmega2560__) analogReference(INTERNAL1V1); #else analogReference(INTERNAL); #endif analogRead(IR_SENSE_PIN); // settle analogreference value wait(CHECK_FREQUENCY); // wait a bit } void presentation() { // Send the sketch version information to the gateway and Controller sendSketchInfo("Water Meter", "1.2"); // Register this device as Waterflow sensor present(CHILD_ID, S_WATER); present(CHILD_PINGID, S_DISTANCE); present(CHILD_ERRID, S_DISTANCE); } void loop() { if (digitalRead(LEARN_SWITCH_PIN)==LOW) { pinMode(LEARN_LED_PIN, OUTPUT); digitalWrite(SENSOR_POWER, HIGH); intervalcnt = 0; learn_loop(); } else { learntime=LEARN_TIME*2; learnlow = 1023; learnhigh = 0; pinMode(LEARN_LED_PIN, INPUT); normal_loop(); } } void learn_loop() { // will run into this loop as long as we are learning wait(500); unsigned int sensorValue = analogRead(IR_SENSE_PIN); Serial.print("IR: "); Serial.print(sensorValue); if (learntime>0) { // still learning learntime--; learnsaved = false; digitalWrite(LEARN_LED_PIN, !digitalRead(LEARN_LED_PIN)); // blink led if (sensorValue < learnlow) { learnlow = sensorValue; Serial.println(" Lowest"); } else if (sensorValue > learnhigh) { learnhigh = sensorValue; Serial.println(" Highest"); } else Serial.println(); } else { if (!learnsaved) { treshold = (learnhigh + learnlow)/2; Serial.print("Treshold: "); Serial.println(treshold); storeEeprom(EE_TRESHOLD, treshold); } learnsaved = true; // just display using LED digitalWrite(LEARN_LED_PIN, sensorValue>treshold); Serial.println((sensorValue>treshold ? " on" : " off")); } } void normal_loop() { unsigned long start_loop = millis(); // to allow adjusting wait time intervalcnt++; // we start doing a measurement digitalWrite(SENSOR_POWER, HIGH); wait(IR_ON_SETTLE); unsigned int sensorValue = analogRead(IR_SENSE_PIN); digitalWrite(SENSOR_POWER, LOW); #ifdef MY_DEBUG_DETAIL Serial.print("IR: "); Serial.println(sensorValue); #endif boolean nowvalue = onoff; if (onoff && (sensorValue<treshold-TRESHOLD_MARGIN)) nowvalue = false; if (!onoff && (sensorValue>treshold+TRESHOLD_MARGIN)) nowvalue = true; if (nowvalue != onoff) { // we have a pulse, only count on upwards pulse onoff = nowvalue; if (onoff) { pulseCount++; #ifdef MY_DEBUG Serial.print("p: "); Serial.println(pulseCount); #endif } } // Only send values at a maximum frequency or woken up from sleep if (minsendcnt>0) minsendcnt--; if (maxsendcnt>0) maxsendcnt--; // send minimum interval when we have pulse changes or if we had some flow the prior time or send on timeout if ((minsendcnt==0 && (pulseCount != oldPulseCount)) || (minsendcnt==0 && oldflow != 0) || maxsendcnt==0) { if (!pcReceived) { //Last Pulsecount not yet received from controller, request it again Serial.print("Re-request var1 .."); request(CHILD_ID, V_VAR1); // Prevent flooding the gateway with re-requests,,, wait at least 1000 ms for gateway (cannot be sleep or smartSleep wait(2*CHECK_FREQUENCY); return; } minsendcnt = MIN_SEND_FREQ; maxsendcnt = MAX_SEND_FREQ; pingcnt++; sensorValue = analogRead(BATTERY_SENSE_PIN); int batteryPcnt = sensorValue / 10; // 1M, 470K divider across battery and using internal ADC ref of 1.1V // Sense point is bypassed with 0.1 uF cap to reduce noise at that point // ((1e6+470e3)/1e6)*1.1 = Vmax = 1.67 Volts // 1.67/1023 = Volts per bit = 0.00158065 Serial.print("Battery %: "); Serial.println(batteryPcnt); if (oldBatteryPcnt != batteryPcnt) { sendBatteryLevel(batteryPcnt); oldBatteryPcnt = batteryPcnt; } double volume = ((double)pulseCount/((double)PULSE_FACTOR)); flow = ((double) (pulseCount-oldPulseCount)) * (60000.0 / ((double) intervalcnt*(double) CHECK_FREQUENCY)) / ppl; // flow in liter/min #ifdef MY_DEBUG Serial.print("pulsecount:"); Serial.println(pulseCount); Serial.print("volume:"); Serial.println(volume, 3); Serial.print("l/min:"); Serial.println(flow); #endif bool b = send(lastCounterMsg.set(pulseCount)); // Send pulsecount value to gw in VAR1 if (b) errcnt2=0; else { errcnt++; errcnt2++; } b = send(volumeMsg.set(volume, 3)); // Send volume (set function 2nd argument is resolution) if (b) errcnt2=0; else { errcnt++; errcnt2++; } b = send(flowMsg.set(flow, 2)); // Send flow value to gw if (b) errcnt2=0; else { errcnt++; errcnt2++; } b = send(pingMsg.set(pingcnt)); // ensure at least this var has a different value if (b) errcnt2=0; else { errcnt++; errcnt2++; } b = send(errMsg.set(errcnt2+((float) errcnt2/100),2)); // ensure we always send error count if (b) errcnt2=0; else { errcnt++; errcnt2++; } oldPulseCount = pulseCount; intervalcnt = 0; oldflow = flow; if (errcnt2>= (5*RESETMIN)) { Serial.println("Reset"); wait(300); resetFunc(); //call reset to reboot the Arduino } } // calculate how long it took to process all of this. then go to sleep for the remaining period unsigned long end_loop = millis(); if (end_loop - start_loop < CHECK_FREQUENCY) sleep(CHECK_FREQUENCY - (end_loop > start_loop ? end_loop - start_loop : 0)); } void receive(const MyMessage &message) { if (message.type==V_VAR1) { unsigned long gwPulseCount=message.getULong(); pulseCount += gwPulseCount; oldPulseCount += gwPulseCount; flow=oldflow=0; Serial.print("Received last pulse count from gw:"); Serial.println(pulseCount); pcReceived = true; } } void storeEeprom(int pos, int value) { // function for saving the values to the internal EEPROM // value = the value to be stored (as int) // pos = the first byte position to store the value in // only two bytes can be stored with this function (max 32.767) saveState(pos, ((unsigned int)value >> 8 )); pos++; saveState(pos, (value & 0xff)); } int readEeprom(int pos) { // function for reading the values from the internal EEPROM // pos = the first byte position to read the value from int hiByte; int loByte; hiByte = loadState(pos) << 8; pos++; loByte = loadState(pos); return (hiByte | loByte); }@bart59 Can you post full circuit diagram for the modified code you made?
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I made some improvements on this sketch. Please review them here: https://github.com/mysensors/MySensors/pull/1540
with these changes you will have:
1 - factory reset
2 - automatic home assistant entities creation
3 - counter correction from home assistant using service notify.mysensors
4 - fixed counter automatically incremented by 1 at each device restart (due to arduino library interrupt bug)
5- other tiny improvements -
I really like the update you did for Home Assistant integration.
But: I do not really understand, how to correctly send the VALUE_TO_ADD.
This is what I tried to add 967.067 m³:
service: notify.mysensors data: message: VALUE_TO_ADD target: text.water_meter_100_2 data: 967067But I just get this error message:
Fehler beim Aufrufen des Diensts notify.mysensors. expected dict for dictionary value @ data['data']. Got NoneThese are my newly found entities:
What is wrong here?
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I really like the update you did for Home Assistant integration.
But: I do not really understand, how to correctly send the VALUE_TO_ADD.
This is what I tried to add 967.067 m³:
service: notify.mysensors data: message: VALUE_TO_ADD target: text.water_meter_100_2 data: 967067But I just get this error message:
Fehler beim Aufrufen des Diensts notify.mysensors. expected dict for dictionary value @ data['data']. Got NoneThese are my newly found entities:
What is wrong here?
I finally got this to work. Unlike what the description here says, this is how to update the value:
In Home Assistant, go to Developer->Service->YAML mode:service: text.set_value data: value: "967067" target: entity_id: text.water_meter_100_2(change 967067 with the value you want to add to the current counter)
The service "notify.mysensors" seems to be deprecated by Home Assistant.
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