The prototype used an Arduino communicating over I2C to the sensor and an OLED screen, which he eventually put in a 3D printed case to carry around to sample CO2 concentration in various real ...

Its MH-Z14A NDIR CO2 sensor and GP2Y1010AU0F optical dust detector are read by a WiFi-enabled microcontroller, this time the Arduino Nano RP2040 Connect, which ultimately reports its findings to ...

Tiny CO2 sensor works at high concentrations Sensirion has introduced a sensor for measuring high concentrations of CO2, based on a thermal conductivity technique. Called STC31, it is aimed at ...