<b>SunFounder PiCar-4WD is a very cool raspberry pi robots kit desighed for both Raspberry Pi beginners and professionals to learn electronic kits. It suitable for the Raspberry Pi 4B and 3 model B+ 3B. With the grayscale module, ultrasonic module, Photo-interrupter sensor module, the car can realize obstacle avoidance, line following, object following, cliff detection, velocity measurement, mileage calculation and so on. <br> <br> <b>In addition, this new raspberry pi smart car with a tutorial make you easy to assemble this robot car kit, we have written a friendly browser software that quickly turns on/off and freely combines the above-mentioned various functions. U will see a cool apperance car kit to learn electronics, programming and robotics.<br> <br> <b>If you are interested in autonomous driving, you should own a SunFounder PiCar-4WD!<br> <b>Electronic Parts</b><br> 1 x 4WD HAT Module<br> 1 x 2-ch Photo-interrupter Module(Velocity Measurement Module)<br> 1 x 3-ch Grayscale Sensor Module<br> 1 x 3.3V Ultrasonic Module<br> <br> <b>Other Parts</b><br> 1 x Connection Wire(Grayscale Sensor Module)<br> 1 x Connection Wire(Ultrasonic Module)<br> 1 x Connection Wire(Photo-interrupter Module)<br> 1 x Ribbon<br> 4 x Cable Tie<br> 1 x Screwdriver<br> 4 x Wheels <br> 1 x Battery Holder<br> <br> <b>Driving Parts </b><br> 4 x Motor<br> 1 x Servo<br> 2 x 18650 Batteries<br><b>Structural Plates</b><br> 1 x Top Plate<br> 1 x Bottom Plate<br> 2 x Spoiler<br> 4 x Support<br> 1 x Radar support<br> <br> <b>Mechanical Parts</b><br> 4 x M1.5*4mm Self-tapping Screw<br> 6 x M1.4*8mm Screw<br> 4 x M2*10 mm Srew<br> 10 x M2.5*6mm Srew<br> 4 x M3*8mm Flat-head<br> 16 x M3*8mm Screw<br> 10 x M3*28mm Screw<br> 6 x M1.4 Nut<br> 4 x M2 Nut<br> 18 x M3 Nut<br> 6 x M2.5*11mm Bi-pass Nylon Standoff<br> 2 x Encoding Disk<br> 6 x M2.5*8+6mm Single-pass Nylon Standoff<br> 6 x M3*30mm Bi-pass Nylon Standoff<br>