Remote Car DIY Part.1 - Controller

I played some remote cars in my childhood, sometimes I teared down those cars even and check the look of parts .

Now I watch some videos about building remoting toys via Arduino like tank, helicopter, web cam with car . . .etc

Therefore, I also want to a remote toy on my own!

 
Here is the staff I bought.

Encoders : HT12E/D
Motor Driver : L293D
Wireless Module : SHY-J6122TR
2-DIP Switch with 8 slides
Motor : x2
Button : x4

Here is the circuit

Finish the part of Controller