04-01-14, 08:33 PM | #1 |
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GE T6603-5 CO2 sensor Arduino sketch
Code:
/* GE T6603-5 Safe-AirTM Plus CO2 Sensor This sensor: +5vdc on pin 3, Gnd on pin 4, produces an open collector +Pulse output on pin 5 (with 10K pullup resistor to +5) The duration of this pulse indicates the CO2 in Parts per Million (with manipulation) This sketch averages 100 samples & prints out PPM Takes about 1.7 minutes / printout http://www.sensorexpert.com.cn/Uploa...2843_18796.pdf http://www.tecnosens.it/media/6970/920-6603.pdf Arduino - PulseIn */ #define sample_cnt 100 int I; float sample_avg = 0.0; float sample_accum = 0.0; float sample = 0.0; float ppm = 0.0; int pin = 11; unsigned long duration; void setup() { Serial.begin(9600); // start serial communication pinMode(pin, INPUT); delay(5000); Serial.println("........Hello world!......."); } void loop() { sample_accum = 0.0; //clear accumulator for (I = 0; I < sample_cnt ; I++) //loop taking samples { duration = pulseIn(pin, HIGH); //read the pulse in microseconds sample = (duration / 1000.0); //convert to ms ppm = (1.996 * sample); //convert to ppm sample_accum += ppm; //accumulate samples } sample_avg = (sample_accum / sample_cnt); //find average Serial.print("CO2 level = "); // Write ppm to serial monitor Serial.print(sample_avg); Serial.println(" ppm"); Serial.println(".............."); } Last edited by buffalobillpatrick; 04-02-14 at 02:54 PM.. |
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