Here are some physical properties of the car that I measured (this may vary slightly for different devices):
- Mass: 405 grams without Wifi module, 410 grams with Wifi module
- Max speed: analog value is 255, corresponding to 12.07 km/h
- Min speed: analog value is 90, corresponding to 3.017 km/h, any lower values you have to nudge the car for it to move
- Wheel estimated coefficient of rolling friction =
- Max slope the car can go up:
You can follow the instructions in the official video: https://youtu.be/dS-NAC0Nqgc (opens in a new tab)
Copy this code and open it in your Arduino IDE https://gist.github.com/minhviet0308/45b32dd6eb89d4b52c5bc8cc925e6c8c (opens in a new tab)
- Modify line 21 to make the car's FRONT accurate
- Modify line 22 and 23 to adjust the right and left turning angles
- Modify line 27 and 28 to adjust the normal and high speed of the car
- Connect it to your car and upload it
The car should go forward, go backward, turn right, then turn left, then stop, with a 1s delay between each action
For fun:
- Using the loop() function, can you make the car go in a circle? Go in an 8-shape?