I made two using scd41, esp32 and esphome. https://shop.m5stack.com/products/co2l-unit-with-temperature-and-humidity-sensor-scd41 https://shop.m5stack.com/prod

I made two using scd41, esp32 and esphome. https://shop.m5stack.com/products/co2l-unit-with-temperature-and-humidity-sensor-scd41 https://shop.m5stack.com/products/co2l-unit-with-temperature...