CircuitPython c02 monitor using SCD C02 Sensor & 1.5" OLED 128 x 128 display C02 Sensor in CircuitPython Uses an Adafruit SCD40 C02 Sensor & an Adafruit 1.5" OLED 128 x 128 gray scale display (STEMMA-QT) This code is running on a QT Py ESP32-S2, but should work identically on any board with a STEMMA-QT port.
Additional build info coming soon.