Overview: This intercom will allow two colleagues to message each other to see if they want to go for a coffee or walk. The device will vibrate and light up whenever the other person is sending anything.

Basic Idea

Hardware and Specs

Arduino IDE Setup + Basic Tutorial

Getting MAC Address

ESPNow Tutorial

Step 1: Light up LED Sender to Receiver

Step 2: Respond by yes (green LED) or no (red LED) when orange LED is on