12V Micro Metal Gearmotor w/ Encoder & Cable, 73rpm

E-S MotorSKU: RM-ESMO-08S
Manufacturer #: 12SG-N20VA-298-EN 12V

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Sale price $11.18

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Description

  • Precious metal brushes
  • Shaft length 10mm, D-shaped
  • Long lifetime, low noise
  • Gear ratio 298:1
  • Magneic encoder, 2 channels, 7 PPR

This particular DC motor comes with a 1:298 gear ratio and uses 12V nominal power. The gear ratio will not affect the current draw but does change the torque and RPM. See below for the no-load/rated/stall current, RPM, and torque for a range of ratios!

Provide 12V DC (nominal) to the white and red wires - these connect to your motor driver and can be PWM'd for speed adjustment and direction by using an H-bridge.

Connect the black wire to your microcontroller ground pin, and the blue wire to 3-5V DC using whichever voltage your microcontroller uses. Then you can read the hall effect outputs on the yellow and green wires.

Basically, you just want to interrupt on one of the encoder pins, use count the time since the last interrupt, and multiply the count time by 14-counts-per-revolution and the gear ratio.

A mounting bracket for this motor is also available at: https://www.robotshop.com/en/micro-metal-gearmotor-bracket.html

12 * 26 * 10mm

Model: 12SG-N20VA-298-EN 12V

Rated Voltage : 12 V DC

Gear ratio : 1/298

No Load Speed : 73 RPM

No Load Current : 60 mA

Rated Speed : 42 RPM

Rated Torque : 2.3 Kg.cm

Rated Current : 220 mA

Stall Torque : 3 Kg.cm

Stall Current : 0.4 A

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