How they steer › 02 OF 04
Steered wheelsLike a real car
Steers like a real car: a servo turns the front wheels and the motors drive the rear ones. The further you push sideways, the more the wheels turn.
- 2 motors + servo
- Steers like a car
- 1 machine
- Wukong
No. 01 · Steering car
How it steers
The servo holds the front wheels at an angle: straight at CENTER, up to TURN degrees to either side. The rear wheels only push, both the same way, so the car drives along the curve the front wheels point to. It cannot turn on the spot: how far the wheels turn sets its smallest circle.
The machines
Steering car
Wonder Building Kit, case 37: rack and pinion steering on the grey 2 kg servo.
3D model and steps →Pit board: boards and programs
| Board | Motors | Program for the phone | Wiring |
|---|---|---|---|
| ElecFreaks Wukong | M1 and M2 the rear wheels, S0 the steering servo | Steering Car Driver (Bluetooth) | drawing |
| LEGO Technic Hub, SPIKE Prime hub, BuWizz 3.0 Pro | next a drive motor and a motor that holds the steering angle | All the boards | |
Drive and test
- Phone joystick: up and down drive, sideways steers.
- Test motors: 1 and 2 the rear motors, 3 the servo: left, then right.
- Settings at the top of the program: it drives backwards, FORWARD to 1; it steers the wrong way, TURN to -40; the wheels aren't straight at rest, adjust CENTER.