Ananya wrote the code in Arduino IDE and a companion mobile app in MIT App Inventor. She created conditional loops ( if motion detected, then send alert ), variables for temperature readings, and a function to make CHIRP say “Greetings, human!” when someone came near.
Chapter 4: The Tech Fair
Over the next two days, the trio worked like a well-oiled machine. Rohan replaced CHIRP’s old microcontroller with a modern ESP32 board. He soldered connections, managed power supply units (PSU), and configured the GPIO pins for the sensors. edumax computer books class 8