Radio Remote Control LED Dimmer Using NRF24L01 – Arduino Compatible

This is an easy-to-make LED dimmer using RF remote control. The project is capable of driving a load up to 24W (2A X 12V LED). Any 12V single or 12V LED strip can be used. This is an open-source Arduino compatible hardware that has Atmega328 microcontroller, Potentiometer, MOSFET, 5V Regulator, 3.3V Regulator, NRF24L01 Radio modules, and few other components. The same PCB can be used for Transmitter and Receiver. LED D2 Power LED, LED D1 optional.

Arduino Pins Transmitter

• NRF24L01 RF Module: GND>>GND, 3.3V>>3.3V Regulator, CE>> Arduino Digital Pin D9, CSN>> Arduino Digital Pin D10, MOSI>>Arduino Digital Pin D11, MISO>> Arduino Digital Pin D12, CSK>>Arduino Digital Pin D13
• Potentiometer: Analog Pin A3

Arduino Pins Receiver

• NRF24L01 RF Module: GND>>GND, 3.3V>>3.3V Regulator, CE>> Arduino Digital Pin D9, CSN>> Arduino Digital Pin D10, MOSI>>Arduino Digital Pin D11, MISO>> Arduino Digital Pin D12, CSK>>Arduino Digital Pin D13
• LED Driver MOSFET Gate: Digital Pin D3

Credits: This is a modified code, original author R Girish

Arduino Code

Arduino code for transmitter and receiver is available as a download, uploading code is easy, follow bellow link for more details:

https://www.arduino.cc/en/Tutorial/BuiltInExamples/ArduinoToBreadboard

Receiver Features

• Supply Receiver 12 DC (7-15V Range)
• LED Load Up to 2A (2A X 12V = 1W To 24W) 12V LED.
• Operating Frequency 490Hz
• PWM Duty Cycle 0 to 100%
• PCB Dimensions 54.61 x 37.31 mm

Transmitter Features

Supply 12V DC @ 70mA

Schematic

Parts List

Connections

Gerber View

Photos

Video

ATtmega328 Datasheet

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