Quantity   Component name
1 × ATTINY85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × LM393 Amplifier and Linear ICs / Comparator ICs
1 × Velostat https://www.amazon.com/gp/product/B071G74PGW/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
1 × Active Buzzer