电机
Start Here — Which Motor?
🚗 Simple Drive / Fan? DC Motor + TB6612FNG driver. PWM speed control, bidirectional. Motor Driver Docs →
🎯 Precise Angle? Servo MG996R. 10 kg.cm torque, PWM control, under $5.
📐 Precision Positioning? Stepper NEMA 17. 40 N.cm, step/dir control, 3D printer standard.
| Type | Example | Control | Torque | Speed | Best For |
|---|---|---|---|---|---|
| DC Motor | TT Motor 130 | H-bridge PWM | Low | 100–300 RPM | Simple drive, fans |
| Servo (Micro) | SG90 | PWM 50Hz | 1.2 kg·cm | 0.12s/60° | Small actuation |
| Servo (Standard) | MG996R | PWM 50Hz | 10 kg·cm | 0.17s/60° | Robot arms |
| Stepper (NEMA 17) | 17HS4401 | Step/Dir driver | 40 N·cm | 0–1000 RPM | Precision positioning |
| BLDC | 2212 920KV | ESC (PWM) | High | 0–12000 RPM | Drones, high-speed |
| Continuous Servo | FS90R | PWM | 1.5 kg·cm | 0–200 RPM | Wheel drive |