Gravity: UART Infrared CO2 Sensor (0-50000ppm) problem
kizzzane 2020-07-20 13:43:26 2000 Views6 Replies After about 3-4 minutes the sensor becomes unresponsive every time. im using esp NodeMCU and software serial. the sensor work great for a couple minutes then stops responding. the NodeMCU does not freeze. the only way the sensor ill work again is if i unplug the power from the co2 sensor to restart it? Please help!!
2020-07-25 05:43:23 its not the power supply. im using a programmable dc power supply at 5.2v. kizzzane
kizzzane 2020-07-22 00:55:36 I have 3 of these sensors and all 3 of them do the same thing. moving the delay helps it work a lot longer but in the end it still crashes? Im using esp8266 and software serial. any help would be greatly appreciated. I have sunk $300 dollars in the and they wont work kizzzane
kizzzane 2020-07-20 22:20:45 This code on your website is in error,
kizzzane
Code: Select all
it should be,
/***************************************************
* Infrared CO2 Sensor 0-50000ppm(Wide Range)
* ****************************************************
* The follow example is used to detect CO2 concentration.
* @author lg.gang([email protected])
* @version V1.0
* @date 2016-6-6
* GNU Lesser General Public License.
* See <http://www.gnu.org/licenses/> for details.
* All above must be included in any redistribution
* ****************************************************/
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
unsigned char hexdata[9] = {0xFF,0x01,0x86,0x00,0x00,0x00,0x00,0x00,0x79}; //Read the gas density command /Don't change the order
void setup() {
Serial.begin(9600);
while (!Serial) {
}
mySerial.begin(9600);
}
void loop() {
mySerial.write(hexdata,9);
delay(500);
for(int i=0,j=0;i<9;i++)
{
if (mySerial.available()>0)
{
long hi,lo,CO2;
int ch=mySerial.read();
if(i==2){ hi=ch; } //High concentration
if(i==3){ lo=ch; } //Low concentration
if(i==8) {
CO2=hi*256+lo; //CO2 concentration
Serial.print("CO2 concentration: ");
Serial.print(CO2);
Serial.println("ppm");
}
}
}
}
Code: Select all
/***************************************************
* Infrared CO2 Sensor 0-50000ppm(Wide Range)
* ****************************************************
* The follow example is used to detect CO2 concentration.
* @author lg.gang([email protected])
* @version V1.0
* @date 2016-6-6
* GNU Lesser General Public License.
* See <http://www.gnu.org/licenses/> for details.
* All above must be included in any redistribution
* ****************************************************/
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
unsigned char hexdata[9] = {0xFF,0x01,0x86,0x00,0x00,0x00,0x00,0x00,0x79}; //Read the gas density command /Don't change the order
void setup() {
Serial.begin(9600);
while (!Serial) {
}
mySerial.begin(9600);
}
void loop() {
mySerial.write(hexdata,9);
for(int i=0,j=0;i<9;i++)
{
if (mySerial.available()>0)
{
long hi,lo,CO2;
int ch=mySerial.read();
if(i==2){ hi=ch; } //High concentration
if(i==3){ lo=ch; } //Low concentration
if(i==8) {
CO2=hi*256+lo; //CO2 concentration
Serial.print("CO2 concentration: ");
Serial.print(CO2);
Serial.println("ppm");
}
}
}
delay(500);
} 2020-07-20 14:55:16 the problem might be in your sample code. i think the delay is in the wrong place? kizzzane
kizzzane 
