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Reference Design of RENESAS Smart LED

This is a reference design of the RENESAS Smart LED, which is one of the quick solutions using RL78 / G1D. It is provided in a format that allows you to use it with our free DesignSpark PCB software to edit and use freely. For a download link of the RENESAS Smart LED project file and article, please refer to the end of this article.


RENESAS Smart LED is a board which can control LED colour using Bluetooth. By installing RL78 / G1D on this board, you can freely output your favourite colour with low current and low power consumption by using Bluetooth® Low Energy (BLE). As an example, it is possible to remotely manipulate the colours of LEDs from applications that provide a smartphone RGBLED control interface.

Key features

  • The colour of the LED can be changed freely
  • Low current consumption and low power consumption
  • Change the colour of LED remotely using a smartphone
Application examples for operating LEDs


Schematic of Smart LED


PCB Layout of Smart LED


3D View of smart LED board

BOM list of key components


RS Part Number

Manufacturer Part Number





Renesas Electronics

BLE Module included in the RTK0EN0001D01001BZ




Action LED (green, 0603inch)




RGB LED (2.8*3.2mm)



Micro Commercial Co

NPN Bipolar Transistor



Advanced Monolithic Systems



DC Power Jack

RS Pro

DC power jack (5.5x2.1mm)


Technical documents

Download related technical documents

About Renesas RL78 Quick Solution 


What is DesignSpark PCB format?

DesignSpark PCB is an award-winning software package for schematic capture and PCB layout, available for FREE from RS Components. Our software is easy to learn and use yet surprisingly powerful. DesignSpark PCB is now widely adopted in the industry as a standard format for design file sharing and collaboration. This is especially useful in the prototyping phase where most of the innovation takes place. Not yet a DesignSpark PCB user? 

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Other Renesas Reference Design

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