Quantity   Component name
1 × Helmet Any Bike helmet which fully covers the Head
1 × Small DC Motor and Fan Low voltage rated motor suits best for this scenario
1 × Air Filters (Activated Charcoal, HEPA) to name a few
1 × Gas Sensor ( MG811, AQ-104, Grove AQ sensor)
1 × ATmega MCU Any MCU can be used
1 × Solar Panel To power the motor, sensor and microcontroller
1 × LED To indicate the air quality condition