This is a fun and relatively simple prank that is ideal to use anywhere. It is fairly simple to build using circuito.io and arduino.
Project tutorial by Robin Kanattu Thomas
nRF24L01 radio transceiver provides very efficient and inexpensive way to establish communication between microcontrollers.
by Robin Kanattu Thomas
ESP8266 ESP-01 chip provides a really low cost and effective way to communicate over the internet.
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