This is the project I developed during 8th and 9th grade consisting of a prototype of a traffic light for visually impaired. The code was used for a traffic light that alternates leds, identifies in-coming individual, and emits different buzzer frequencies depending on the LED's states. You can find more about Fablearn and my prototype on the following links: Fablearn: https://nyc2019.fablearn.org/program/ Young Makers Panel > Traffic Light for visually impaired