Smart Helmet With Wireless Brake,turn Light & Bluetooth

About the project

This helmet has turn & brake lights for improved rider visibility and security synced with motorcycle and bluetooth headset DEMO VIDEO INCLUDED!

Project info

Difficulty: Moderate

Platforms: AndroidArduino

Estimated time: 1 day

License: GNU General Public License, version 3 or later (GPL3+)

Items used in this project

Hardware components

Speaker Speaker x 2
bluetooth audio receiver bluetooth audio receiver x 1
Voltage regulator 12v-(3.3v & 9v) Voltage regulator 12v-(3.3v & 9v) x 1
9v battery 9v battery x 1
12v battery 12v battery x 1
7.7k resistors 7.7k resistors x 3
12v led 12v led x 3
Nrf24 Nrf24 tranceiver module x 2
1k resistors 1k resistors x 3
arduino nano arduino nano microcontroller x 1
arduino uno arduino uno x 1

View all

Software apps and online services

Arduino IDE Arduino IDE

Hand tools and fabrication machines

Wire clipper Wire clipper x 1
Soldering iron Soldering iron x 1
Scissor Scissor x 1
Screw drivers Screw drivers x 1


If you ride a bike, you probably share the road with a lot of cars. Unfortunately, they don’t always share the road very well with you. So I took a helmet, a few Arduinos, and some wireless transceivers(Nrf24) and made headgear that shows when you stop and also shows turn signals

And added a Bluetooth headset system.


these people here on different communites explained my project very well

1)Janaki Jitchotvisut


Project Logs

this helmet now has a bluetooth headset system

along with the indicators i now added a bluetooth headset system into the helmet.

i used this bluetooth receiver(used for cars).

split opened it up,removed the battery etc and wired the speakers to audio jack outputs as well as battery.I then changed the speakers after testing with smaller and more efficient ones as the older ones were too hungry for amps X ) and wired them permanetly onto the bluetooth receiver board.It was then time to install the assembly into the helmet.I used a voltage regulator board to power all the electronics like arduino,indicator and break lights,bluetooth,speakers etc which could take 12-24v i/p and gives 5v or 9v as per our requirement.the whole assembly then installed carefully into the helmet.

you can see a little extension of the bluetooth board coming out near the front glass. that is for turning the bluetooth on and off and volume up and down contolls.

Then covering the whole wiring with the inbuilt foam cover in helmet.

Drilled a small hole at lower right portion of the helmet just below the ear from where i can push the button of voltage regulator to turn on/off the entire electronics.

TADDAA!! and thats one more feature now :)

Schematics, diagrams and documents

Receiver schematic

Transmitter schematic

CAD, enclosures and custom parts

Demo video of project

YouTube video

Go to download


Transmitter code

Receiver code


Photo of Adnanrk


I am pursuing graduation in mechanical engineering. I am a passionate about making creative & innovative mechanisms, Engineering projects and also at a initial level of robotics(learning Arduino & programming)


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