Carbon Dioxide Probe

CO2 Gas Sensor - Tech Tips with Vernier

The CO2 Gas Sensor measures gaseous carbon dioxide in two ranges--0 to 10,000 ppm and 0 to 100,000 ppm. With this sensor, you can easily monitor changes in CO2 levels occurring in respiration of organisms ranging from peas to humans. A 250 mL respiration chamber with probe attachment is included for running controlled experiments with small plants and animals. Learn more at http://www.vernier.com/co2-bta/

Arduino DIY CO2 PPM Meter

In this video, we use the MQ135 gas sensor to measure the concentration of carbon dioxide in the air. We know that the average CO2 level is 400ppm, so by doing a little math and a little stats we can form a curve to calculate the CO2 PPM for any given reading of the sensor. We output this data to an OLED display in both text and as a bar graph. You can put this easy DIY project together in a few minutes and for about $15.00. That's alot better than paying over 400 for a commercial unit. All of my sketches are available here: https://www.dropbox.com/sh/m6c40pu99fqxb5b/AAD1Gzn6F4Hy8v9RrTZSxQyHa?dl=0 -~-~~-~~~-~~-~- Please watch: "Diodes: The basic building block of all digital circuits...