Introduction: VIBRoNAV VIBRating NAVigation

VIBRoNAV is system for navigating by vibration with no need to look at your device. It is for bicycle riders and walkers, when you need your hands free.

It using Android navigation app (HERE is used ) and vibrating "egg" which is connected over Bluetooth.

Just simply put your Smartphone to one pocked, vibrating "egg" to second pocket and turn to side, where you feel vibrations.

Step 1: App for Android

VIBRoNAV using simple application, which is reading notification populated by navigation app. If navigation notified to turn right, application read this notification and makes vibration in your right pocked. VIBRoNAV using smart logic which vibrating so intensive, how close you are to next turn. It starts with small vibration hundreds meters in front of turn just to advice you and putting more and more force how are you coming to the point. Your eyes, hands and ears are free and you can enjoy your trip on the right track.

Download and Install APK

Source code for your improvements is available on git hub

Project is in progress...

Step 2: How to Use

1) Start your HERE navigation, select final destination and start navigation

2) Start VIBRoNAV app, connect to Bluetooth "egg"

3) Put you phone to LEFT pocket, "egg" to RIGHT pocket

4) Enjoy your trip on right way

Step 3: What Do You Need?

1) Android Smartphone

2) Arduino Nano

3) HC-05 Bluetooth module

4) Transistor (e.g. BC549), rezistor ~1kOhm, diode

5) Vibration motor

6) Battery 5V (e.g. 4pc rechargeable 1.2V Ni-Cd )

Step 4: Connect Together

HC-05 Bluetooth module receiving instruction from VIBRONAV android app and sending to Arduino Nano over serial line.
According received commands Arduino control vibrating motor over universal NPN transistor.

In parallel to motor connected diode eliminates motor switch off voltage peeks.

Don't forget upload Arduino sketch from

Step 5: Prototype

Prototype is equipped with TP4056 charging module, Li-Ion 18650 battery and DC-DC step-up voltage converter as rechargeable power source shown on picture 1.

On picture 2 is Arduino Nano, Bluetooth module and on right side transistor with vibration motor.

Complete device with two red LEDs for additional direction indication on picture 3.

Microcontroller Contest 2017

Participated in the
Microcontroller Contest 2017