Quantity   Component name
3 × Hazzah Feather Board Hazzah Feather Board is the processing unit of the entire machine. Where to buy: https://www.adafruit.com/product/3591?gQT=1
3 × Ultrasonic Sensor The Ultrasonic sensor is the input of the machine and is what senses where the person is. Where to buy: https://www.amazon.com/HCSR04-Ultrasonic-Detector-Ranging-Distance/dp/B0DRJJZTB2?gQT=1
3 × Traffic Light The Traffic light is the output of the machine and blinks when a person is near the ultra sonic sensor. Where to buy: https://electropeak.com/5v-led-traffic-light-module?srsltid=AfmBOooq6VI0Vf9SKt2IEaFYqRfytq6_xPZjz--twyHbGaOO8t0yo-5TxIs
3 × Bread Board The Bread Board is a simple board to make wiring easier and more simple. Where to buy: https://www.adafruit.com/product/239?gQT=1
3 × Self Made 3D printed Box The 3D printed box is what we set the machine on. Cannot buy.
3 × Passive Buzzer The Passive Buzzer makes a sound when the person is near the ultra sonic sensor. Where to buy: https://www.amazon.com/Micro-Traders-Electromagnetic-Loudspeakers-BI588W/dp/B0CXS43G9N?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A3FAG29GGXU06M