Gravity: Analog Infrared CO2 Sensor For Arduino (0~5000 ppm) spiking sensor readings

harveymaunahan 2019-03-26 21:25:11 6111 Views5 Replies
Good Day! I am trying to control the co2 level of a chamber by using the Gravity: Analog Infrared CO2 Sensor For Arduino (0~5000 ppm). However, after sometime, the sensor readings spikes at around 34400 ppm. Does anyone ever experienced this? Kindly help me. Thank you.

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2019-03-27 22:07:12 Thank you very much for your reply Mr. Robert. harveymaunahan

2019-03-27 14:33:03 Yes, only the pin definition are different. robert.chen

2019-03-27 12:10:01 Good Day Mr. Robert, I would like to ask if this fix is applicable to the 50000ppm carbon dioxide sensor? Thank you. harveymaunahan

2019-03-27 12:05:02 I will try to do this fix. Thank you very much for answering. harveymaunahan

2019-03-27 10:50:01 You can put the sensor in the fresh air for 20 minutes and then set the HD pin low level for more than 7 seconds, then you will finish the calibration. robert.chen