Hi everyone! Today we are going to make a smartphone-controlled Arduino 4WD robot car or Bluetooth Arduino robot. It can move forward and backward, left and right, change its speed, turn on / off front and back lights and also it can horn. Parts Required: Chassis 4WD with DC Motors and Wheels Arduino Uno R3 Board Motor Drivers L298N Bluetooth module HC-06 M3 Nylon Hex Spacers/Screw/Nut Assortment Kit wires 18650 Rechargeable Batteries LEDs Battery Holder Case mini switches and buzzer. At first we have to install nylon hex spacers. Now installing boards Installing Bluetooth module Installing battery pack case on double-sided tape Now installing switches installing back lights (LEDs with resistors 220 Ohm) soldering power wires mounting the upper deck now mounting buzzer Installing front lights connecting motors to drivers Connecting wires in accordance with the wiring diagram And now we have made all connections and we have to download the app Next, we have to upload the scetch. Attention! Before uploading we have to disconnect bluetooth module. connecting… and uploading… Our scetch is uploaded and our robor is ready to rollout! Connecting bluetooth module (pins 0 and 1 on Arduino board) Turn on bluetooth… connecting to robot… testing… The robot is ready to go. Thanks to all! Bye!