NRF Attention Reminder works on a multi-transmitter and single receiver network. The NRF on the receiver module is in listening mode and accepts data from the transmitters. The data from transmitters that are already paired is accepted and all other data is rejected.

You press a push button on the transmitter, which causes the transmitter to send a specific message to the receiver. The receiver then shows a message on the LCD, along with that, the receiver switches on the corresponding LED indicating the transmitter number which has sent the message. Also, an alarm is generated using a buzzer to bring focus to the receiver.

Components and How They Work

• Arduinos are codable circuits that help you easily create the base circuit for a transceiver module.
• NRF Modules or NRF24L01 Modules are Radio Frequency based transceiver modules that can act as both a transmitter or receiver.
• The push-button is used to generate input from the user. On the transmitter, it is used to initiate the transmission of a message. On the receiver, it is used to clear the display and reset the LEDs.
• USB Plug connects the transmitter and receiver circuits to the power bank or computer to power them and to help upload the code from the computer into the Arduino.

The Real-World Application

NRF Attention Reminders can be used in places such as hospitals, home security, long-term care facilities, restaurants, and more.

Rewards

30$ – One Receiver Module and One Transmitter Module – NRF Attention Reminder (Basic Package)

45$ – One Receiver Module and Two Transmitter Modules – NRF Attention Reminder (Explorer’s Package)

55$ – One Receiver Module and One Transmitter Module along with 3D enclosure for One Receiver and One Transmitter – NRF Attention Reminder (Advanced Package)

70$ – One Receiver Module and Two Transmitter Modules along with 3D enclosure for One Receiver and Two Transmitters – NRF Attention Reminder (Full Package)