1. ESP32-S2-WROVER(4MB) 2. Arduino IDE 1.8.13 with https://github.com/espressif/arduino-esp32/tree/esp32s2 and run ArduinoData\packages\esp32\hardware\esp32\1.0.4\tools\get.exe 3. Arduino & Modified platform.txt (https://github.com/BoschSensortec/BSEC-Arduino-library) 4. iot device, self designed PCB for air quality monitoring via SPI.
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