Quantity   Component name
1 × ESP32 main board TTGO board, D1 mini v2, Details: http://bit.ly/2wKBZnf
1 × Sensirion PM2.5 sensor (DigiKey option) https://www.digikey.com/en/products/detail/sensirion-ag/SPS30/9598990?s=N4IgTCBcDaIMoFMB2BnAlgJzQeySAugL5A
1 × Panasonic PM2.5 sensor (DigiKey option) https://www.digikey.com/en/products/detail/panasonic-electronic-components/SN-GCJA5L/10443900
1 × Honeywell PM2.5 sensor (DigiKey option) https://www.digikey.com/en/products/detail/honeywell-sensing-and-productivity-solutions/HPMA115S0-XXX/7202204
1 × OLED Display Module D1 mini 64x48 OLED display for ESP32 D1 mini. Details: http://bit.ly/2wFVo8W
1 × DC-DC Power Supply DC-DC Power Supply Converter Booster, Details: http://bit.ly/2XsyEFr
1 × Battery connector Battery connector (PH 2.0mm 2pin leadwire), Details: http://bit.ly/2HumSUZ
1 × Lipo Battery 3.7 500mAh Please use a similar batter than: 8.8x47x19.7 mm ~500mAh like this: https://amzn.to/2FtzE5c
1 × [Optional] Heat Shrink Tubing kit http://bit.ly/34kvZRL