Designers use many wireless communication systems like Bluetooth Low Energy (BLE 4.0), Zigbee, ESP8266 Wi-Fi Modules, 433MHz RF Modules, Lora, nRF etc. And the selection of medium depends on the type of application it is being used in. Among all, one popular wireless medium for local network communication is the nRF24L01. These modules operate on 2.4GHz (ISM band) with baud rate from 250Kbps to 2Mbps which is legal in many countries and can be used in industrial and medical applications. It is also claimed that with proper antennas these modules can transmit and receive signals upto a distance of 100 meters between them. We previously used nRF24L01 with Arduino to control servo motor and create a Chat Room.
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