Modify your old RC Car into that new modern smartphone controlled car with Arduino and Bluetooth

Who have every played with his toy RC car?
Today you can turn your old RC car into an advanced Android RC car using Arduino and Bluetooth shield in simple straight forward steps.

First you need to get the car that fits all of those simple components required for the new control circuit.


Then you need to get all of the stuff out of it. You can find room for your control board as those modern circuits are much smaller than regular ones.

What you’ll need

Arduino UNO
HC-06 Bluetooth shield
L293D IC
12v Lipo battery pack
Some resistors

And you need the program that controls the circuit

Android program:

https://play.google.com/store/apps/details?id=braulio.calle.bluetoothRCcontroller

Source:
https://www.instructables.com/id/Arduino-Bluetooth-RC-Car-Android-Controlled/

Beginner's Dream Quadcopter - Arduino and Bluetooth Micro Quadcopter

This is sure the Beginner's Dream Quadcopter. I've searched a lot for a Quadcopter like this. Today I've found it.

I didn't ask too much. But I couldn't find it until today. And that's why I wanted to share it with you.

Why would it make the Beginner's Dream Quadcopter?

Simplicity
This is one of the simplest quadcopter circuit I've seen recently.  It uses Arduino Nano as its main controller. As for quadcopter stabilization it uses 6050 MPU Module.
User control interfacing circuit is achieved via HC-06 Bluetooth module. This means that you can control this little quadcopter from your smartphone.

Motor drive circuits is built using four transistors.

Source: instructables