Smart Robot Car Kit, 4WD Remote Control Car with Obstacle Avoidance Infrared Tracking Line Following (No Welding Required)

I love the finished product which is great to use.One of the plug-in circuits needed two jumpers removing for it to fit, but I soon figured it out.Educationally, it is wonderful and just shows, in a small way (It is very powerful) how Arduino works.

The media could not be loaded. While the product was relatively easy to assemble, the experience was flawed by three issues:1) One of the rotors does not work. As it is a 4WD (the four wheels are powered by four different rotors), this significantly impacted the smart car's movement.2) One of the infrared sensors on the obstacle avoidance module has been welded on facing the wrong direction (inwards towards the smart car rather than outwards towards the environment). I'm yet to see what impact this has on the obstacle detection as the car doesn't run properly yet (for reason 1 above).3) The holes provided in the circuit board for attaching the infrared line detection modules is too small for the screws provided, so I cannot attach the line detection module without widening the holes (& which may damage the circuit board).Emailed the seller and I've gotten no response. You're likely better off buying one of the cheaper variants of this kit if you find that the seller is more responsive.

very good