Gravity 133RPM 150:1 Micro Gear Motor with PWM Driver

The Gravity micro gear motor from DFRobot combines a small N20 gear motor with metal gearbox and a built-in driver. It is controlled via a single signal line like a continuous rotation servo: the pulse width sets direction and speed, no H-bridge is needed. This motor has a 150:1 gearbox and runs at 133 rpm without load. It connects via the 3-pin Gravity interface and is programmed for example with the Servo library of the Arduino IDE.

Same design with a different ratio: Gravity 290RPM 75:1 Micro Gear Motor with PWM Driver, Gravity 440RPM 50:1 Micro Gear Motor with PWM Driver, Gravity 730RPM 30:1 Micro Gear Motor with PWM Driver

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Gravity IO Expansion Shield for Arduino V7.1
• Dupont Cables M-M 10cm 20 Pieces

Features:

• N20 gear motor with metal gearbox and built-in driver
• Controlled by one signal like a continuous rotation servo, direction and speed via the pulse width
• Stop at a pulse width of 1400 µs to 1600 µs, full speed at 500 µs and 2500 µs
• Quiescent current below 1 mA without control signal
• Gravity 3-pin connector: signal, VCC, GND

Application Examples:

• Drive for small robots and vehicles
• Moving mechanics in models
• Valves and locks
• Teaching and experiments with motors

Documentation:

• Wiki DFRobot DFR1114
• Dimension drawing (PDF)
• Selection guide N20 motors with driver (DFRobot)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR1114
• Gearbox: 150:1
• No-load speed: 133 rpm
• Motor speed without gearbox: 20,000 rpm
• Stall torque: 1.0 kg·cm
• Operating voltage: 3 V to 6 V
• Rated voltage: 6 V
• No-load current: 50 mA at 6 V
• Stall current: 640 mA
• Quiescent current without control signal: below 1 mA
• Control signal: PWM 500 Hz, pulse width 500 µs to 2500 µs, resolution 1 µs
• Pulse width forward: 500 µs to 1400 µs (fastest at 500 µs)
• Pulse width stop: 1400 µs to 1600 µs
• Pulse width reverse: 1600 µs to 2500 µs (fastest at 2500 µs)
• Interface: Gravity 3-pin (signal, VCC, GND)
• Dimensions: 40 × 12 × 20 mm
• Weight: 10 g

Scope of Delivery:

• 1× Gravity 133 rpm 150:1 micro gear motor with driver
• 1× Gravity sensor cable 3-pin digital