Quantity   Component name
1 × Arduino Nano 33 BLE
2 × Adafruit SGP30 TVOC/eCO2 Gas Sensor breakout
1 × Mini Boost Step Up Converter Board Module 3,7V to 5V, 8V, 9V or 12V Amazon/Ebay
1 × TP4056 USB LiPo battery charger breakout Amazon/Ebay
1 × LiPo battery 3.7V/250mAh, with PCM Amazon/Ebay
1 × Custom PCB https://hackaday.io/project/190324-biotop/log/217319-custom-pcb
1 × No name SSD1306 128x64 I2C OLED Amazon/Ebay
2 × Four-pin JST connectors 2.54 PH with 30 cm cable
2 × VEVOX® respirator mask Amazon
1 × Sunpet Food Storage Container, Plastic, Red, 750ml, Pack of 2 Amazon
1 × LAMAR LM Diver Snorkel Mask, Full Face Mask with 180-Degree Vision Amazon
1 × Durovis Biconvex PMMA Lens for Virtual Reality Headsets and 3D Glasses/Google Cardboard Amazon