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https://github.com/sigmasternchen/MH-Z-CO2-Sensors
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Uncomments parts of example.
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1 changed files with 24 additions and 12 deletions
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@ -4,10 +4,12 @@
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#include <SoftwareSerial.h>
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#include "MHZ.h"
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#define CO2_IN D2
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// pin for uart reading
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#define CO2_IN 10
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#define MH_Z19_RX D7
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#define MH_Z19_TX D6
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// pin for pwm reading
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#define MH_Z19_RX D4 // D7
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#define MH_Z19_TX D0 // D6
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MHZ co2(MH_Z19_RX, MH_Z19_TX, CO2_IN, MHZ19B);
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@ -17,13 +19,23 @@ void setup() {
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delay(100);
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Serial.println("MHZ 19B");
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co2.setDebug(true);
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// enable debug to get addition information
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// co2.setDebug(true);
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if (co2.isPreHeating()) {
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Serial.print("Preheating");
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while (co2.isPreHeating()) {
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Serial.print(".");
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delay(5000);
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}
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Serial.println();
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}
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}
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void loop() {
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// Serial.print("\n----- Time from start: ");
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// Serial.print(millis() / 1000);
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// Serial.println(" s");
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Serial.print("\n----- Time from start: ");
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Serial.print(millis() / 1000);
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Serial.println(" s");
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int ppm_uart = co2.readCO2UART();
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if (ppm_uart > 0) {
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@ -31,9 +43,9 @@ void loop() {
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Serial.print(ppm_uart);
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}
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// int ppm_pwm = co2.readCO2PWM();
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// Serial.print(", PPMpwm: ");
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// Serial.print(ppm_pwm);
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int ppm_pwm = co2.readCO2PWM();
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Serial.print(", PPMpwm: ");
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Serial.print(ppm_pwm);
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int temperature = co2.getLastTemperature();
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if (temperature > 0) {
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@ -41,6 +53,6 @@ void loop() {
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Serial.println(temperature);
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}
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// Serial.println("\n------------------------------");
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delay(1000);
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Serial.println("\n------------------------------");
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delay(5000);
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}
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