co2 – Error Therapy

CO2 sensor and iOS/macOS app

Building a portable CO2 sensor with data logging, Apple Siri/HomeKit integration, and an iOS/macOS app.

CO2 x COVID-19 x live music

A photograph of the Badger2040 e-ink display connected via a Qwiic cable to an SCD-41 Carbon Dioxide sensor

While planning on attending a live music venue for the first time in ~2 years, I decided the only way I’d feel safe doing so was being able to calculate the CO2 ppm live.