How to get battery volt / percentage message send to mqtt?
-
I Build a temp / hum sensor with the easyPcb board and Am able to get the temp and hum send to the Mqtt broker.
Next thing is to get the battery voltage and % send to the Mqtt broker as well.
Now that is giving me some problems. I merged the two scripts together, and tried to learn form other topics. But I'M not getting is right dough. This is my script right now:
Also the output of the serial monitor.
I have the feeling I am nearly there
Any help would be great![code] /** * The MySensors Arduino library handles the wireless radio link and protocol * between your home built sensors/actuators and HA controller of choice. * The sensors forms a self healing radio network with optional repeaters. Each * repeater and gateway builds a routing tables in EEPROM which keeps track of the * network topology allowing messages to be routed to nodes. * * 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 - 2016-07-20: Converted to MySensors v2.0 and added various improvements - Torben Woltjen (mozzbozz) * * DESCRIPTION * This sketch provides an example of how to implement a humidity/temperature * sensor using a DHT11/DHT-22. * * For more information, please visit: * http://www.mysensors.org/build/humidity * HTU21D Humidity Sensor Hardware Connections (Breakoutboard to Arduino): -VCC = 3.3V -GND = GND -SDA = A4 (use inline 330 ohm resistor if your board is 5V) -SCL = A5 (use inline 330 ohm resistor if your board is 5V) */ #define MY_NODE_ID 2 #define MY_PARENT_NODE_ID 0 #define MY_PARENT_NODE_IS_STATIC // Enable debug prints #define MY_DEBUG // Enable and select radio type attached #define MY_RADIO_NRF24 //#define MY_RADIO_RFM69 //#define MY_RS485 #include <SparkFunHTU21D.h> #include <MySensors.h> #include <Wire.h> #include <SPI.h> // Force sending an update of the temperature after n sensor reads, so a controller showing the // timestamp of the last update doesn't show something like 3 hours in the unlikely case, that // the value didn't change since; // i.e. the sensor would force sending an update every UPDATE_INTERVAL*FORCE_UPDATE_N_READS [ms] //static const uint8_t FORCE_UPDATE_N_READS = 10; #define CHILD_ID_HUM 0 #define CHILD_ID_TEMP 1 #define CHILD_ID_BATTERY 2 //#define CHILD_ID_VOLT 2 #define CHILD_ID_PRCNT 3 float lastTemp; float lastHum; uint8_t nNoUpdatesTemp; uint8_t nNoUpdatesHum; boolean metric = true; void presentation() { // Send the Sketch Version Information to the Gateway sendSketchInfo("Humidity", "2.0"); // Register all sensors to gw (they will be created as child devices) present(CHILD_ID_HUM, S_HUM); present(CHILD_ID_TEMP, S_TEMP); present(CHILD_ID_BATTERY, S_MULTIMETER); //metric = getControllerConfig().isMetric; } unsigned long SLEEP_TIME = 60000; // Sleep time between reads (in milliseconds) //Create an instance of the object HTU21D myHumidity; MyMessage msgHum(CHILD_ID_HUM, V_HUM); MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP); MyMessage msgBattery(CHILD_ID_BATTERY, V_VOLTAGE); //MyMessage msgBattery(CHILD_ID_BATTERY, V_PRCNT); void setup() { myHumidity.begin(); // use the 1.1 V internal reference #if defined(__AVR_ATmega2560__) analogReference(INTERNAL1V1); #else analogReference(INTERNAL); #endif } void loop() { float temperature = myHumidity.readTemperature(); //if (!metric) { // temperature = (temperature * 1.8) + 32.0; //} send(msgTemp.set(temperature, 1)); Serial.print("T: "); Serial.println(temperature); float humidity = myHumidity.readHumidity(); send(msgHum.set(humidity, 1)); Serial.print("H: "); Serial.println(humidity); // get the battery Voltage int BATTERY_SENSE_PIN = A0; // select the input pin for the battery sense point //SLEEP_TIME = 900000; // sleep time between reads (seconds * 1000 milliseconds) int oldBatteryPcnt = 0; int sensorValue = analogRead(BATTERY_SENSE_PIN); #ifdef MY_DEBUG Serial.println(sensorValue); #endif // 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)/470e3)*1.1 = Vmax = 3.44 Volts // 3.44/1023 = Volts per bit = 0.003363075 int batteryPcnt = sensorValue / 10; #ifdef MY_DEBUG float batteryV = sensorValue * 0.003363075; Serial.print("Child ID "); Serial.print(CHILD_ID_BATTERY); Serial.print("Battery Voltage: "); Serial.print(batteryV); Serial.println(" V"); Serial.print("Battery Percent: "); Serial.print(batteryPcnt); Serial.println(" %"); #endif if (oldBatteryPcnt != batteryPcnt) { // Power up radio after sleep sendBatteryLevel(batteryPcnt); oldBatteryPcnt = batteryPcnt; } sleep(SLEEP_TIME); //sleep a bit } [/code]```16 MCO:BGN:INIT NODE,CP=RNNNA---,VER=2.2.0
26 TSM:INIT
28 TSF:WUR:MS=0
34 TSM:INIT:TSP OK
36 TSM:INIT:STATID=2
38 TSF:SID:OK,ID=2
40 TSM:FPAR
43 TSM:FPAR:STATP=0
45 TSM:ID
47 TSM:ID:OK
47 TSM:UPL
51 TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
59 TSF:MSG:READ,0-0-2,s=255,c=3,t=25,pt=1,l=1,sg=0:1
65 TSF:MSG:PONG RECV,HP=1
69 TSM:UPL:OK
69 TSM:READY:ID=2,PAR=0,DIS=1
75 TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
81 TSF:MSG:READ,0-0-2,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
90 TSF:MSG:SEND,2-2-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=OK:2.2.0
100 TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
2111 TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=11,pt=0,l=8,sg=0,ft=0,st=OK:Humidity
2119 TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=OK:2.0
2129 TSF:MSG:SEND,2-2-0-0,s=0,c=0,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2138 TSF:MSG:SEND,2-2-0-0,s=1,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=OK:
2146 TSF:MSG:SEND,2-2-0-0,s=2,c=0,t=30,pt=0,l=0,sg=0,ft=0,st=OK:
2154 MCO:REG:REQ
2158 TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
2179 TSF:MSG:READ,0-0-2,s=255,c=3,t=27,pt=1,l=1,sg=0:1
2185 MCO:PIM:NODE REG=1
2187 MCO:BGN:STP
2189 MCO:BGN:INIT OK,TSP=1
2244 TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:19.2
T: 19.20
2277 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:42.7
H: 42.68
127
Child ID 2Battery Voltage: 0.43 V
Battery Percent: 12 %
2289 TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=0,pt=1,l=1,sg=0,ft=0,st=OK:12
2297 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
2304 TSF:TDI:TSL
2306 MCO:SLP:WUP=-1
2308 TSF:TRI:TSB
2363 TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:19.1
T: 19.14
2396 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:42.7
H: 42.71
0
Child ID 2Battery Voltage: 0.00 V
Battery Percent: 0 %
2406 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
2414 TSF:TDI:TSL
2416 MCO:SLP:WUP=-1
2418 TSF:TRI:TSB
2473 TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:20.3
T: 20.33
2506 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:55.9
H: 55.90
0
Child ID 2Battery Voltage: 0.00 V
Battery Percent: 0 %
2516 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
2525 TSF:TDI:TSL
2527 MCO:SLP:WUP=-1
2529 TSF:TRI:TSB
2584 TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:19.6
T: 19.59
2617 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:45.1
H: 45.06
0
Child ID 2Battery Voltage: 0.00 V
Battery Percent: 0 %
2627 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
2635 TSF:TDI:TSL
2637 MCO:SLP:WUP=-1
2639 TSF:TRI:TSB
2695 TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:19.4
T: 19.39
2727 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:43.9
H: 43.87
0
Child ID 2Battery Voltage: 0.00 V
Battery Percent: 0 %
2738 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
2746 TSF:TDI:TSL
2748 MCO:SLP:WUP=-1
2750 TSF:TRI:TSB
2807 TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:19.3
T: 19.30
2838 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:43.5
H: 43.48
0
-
@mr_sensor said in How to get battery volt / percentage message send to mqtt?:
int oldBatteryPcnt = 0;
I think this needs to be a global variable, not inside loop, otherwise you set it to zero on each loop. I don't have my code with me at the moment to compare, but I think there is an error on the voltage and percentage calculation
-
@gohan said in How to get battery volt / percentage message send to mqtt?:
I think this needs to be a global variable
Or prefix it with the 'static' keyword to indicate its value should persist over multiple runs.
-
@yveaux changed the position of int oldBatteryPcnt = 0; outside of the loop and added the static prefix static int oldBatteryPcnt = 0;
Still not giving me the right result the first message seem ok but than it only has 0 ?Child ID 2Battery Voltage: 0.43 V Battery Percent: 12 % 2289 TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=0,pt=1,l=1,sg=0,ft=0,st=OK:12 2297 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255 2304 TSF:TDI:TSL 2306 MCO:SLP:WUP=-1 2308 TSF:TRI:TSB 2363 TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:19.6 T: 19.56 2396 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:39.7 H: 39.69 0 Child ID 2Battery Voltage: 0.00 V Battery Percent: 0 % 2408 TSF:MSG:SEND,2-2-0-0,s=255,c=3,t=0,pt=1,l=1,sg=0,ft=0,st=OK:0 2414 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255 2420 TSF:TDI:TSL 2422 MCO:SLP:WUP=-1 2426 TSF:TRI:TSB 2482 TSF:MSG:SEND,2-2-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:19.6 T: 19.57 2512 TSF:MSG:SEND,2-2-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:39.5 H: 39.52 0 Child ID 2Battery Voltage: 0.00 V Battery Percent: 0 % 2523 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255 2531 TSF:TDI:TSL```
-
it looks as the analogread keeps returning zero
-
@gohan Tried to find out what causing that but can not figure it out. I'm bot a real coderer so its trial and error
and trying to understand form other sketches / posts. Any idea where to look for?
-
try adding a delay(500) before the analogread
-
@gohan said in How to get battery volt / percentage message send to mqtt?:
delay(500)
Hi, tried that (already tried it with wait). Now I added it here:
delay(500); int sensorValue = analogRead(BATTERY_SENSE_PIN);Also tried it here:
if (oldBatteryPcnt != batteryPcnt) { // Power up radio after sleep delay(500); sendBatteryLevel(batteryPcnt); oldBatteryPcnt = batteryPcnt; } sleep(SLEEP_TIME); //sleep a bit ``` Both did not help still ending up with 0 . So what should be the best place the right place to put the delay?
-
the second one is useless. It is odd that it misses the analog reads. What AVR boards version are you using?
-
@gohan I'm using the EasyPCB board with an arduino pro mini 3,3v
-
I mean in Arduino IDE library manager
-
Arduino Pro or Pro Mini
Programmer AVR ISP
ATmega328P (3,3v 8mhz)
-
Still not getting it working! Any thoughts on this?
-
Try a simple example sketch that reads the analog pin just to make sure the hardware is OK, or try another pro mini
-
@gohan Ok will try that see if I made a fault somewhere
