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Pololu item #:
2144
Brand:
Power HD
Status:
Discontinued by Manufacturer
The HD-1711MG from Power HD is a miniature-sized servo with the same output spline as standard servos, making it compatible with standard-sized servo horns. The gear train is a mixture of metal and plastic gears to keep the servo light but strong, and the output shaft is supported by a ball bearing. Servo horns and associated hardware are included.
Key specs at 6 V: 0.11 sec/60°, 50 oz-in (3.5 kg-cm), 18.5 g.
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Power HD mini servo HD-1711MG. |
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Power HD mini servo HD-1711MG with U.S. quarter for size reference. |
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Power HD mini servo HD-1711MG with its gearbox cover removed. |
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Power HD mini servo HD-1711MG/HD-1705MG included hardware (might vary). |
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The servo cable is terminated with a Futaba-compatible JR-style connector. |
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The HD-1711MG is a miniature-sized servo from Power HD with the same output spline as standard servos, making it compatible with standard-size servo horns. The gear train uses plastic gears near the motor to reduce weight and metal gears near the output shaft to allow it to deliver the kind of torque typically associated with larger servos. The output shaft is supported by a ball bearing for improved performance.
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The 1711MG works with standard RC servo pulses, offering position control over a 145° operating angle for standard servo pulses between 800 µs to 2200 µs (the physically imposed limit angle is specified to be between 200° and 220°). The servo has a 7″ (18 cm) cable that is terminated with a standard JR-style connector, which is Futaba-compatible, and it includes additional servo horns and mounting hardware.
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You can find more information about this servo in its datasheet (382k pdf)
Note that, as with most hobby servos, stalling or back-driving this servo can damage it.
The FT1117M mini servo from FEETECH is a lower-cost alternative to the 1711MG with nearly identical dimensions and performance. The two servos should be generally interchangeable for most applications. The picture below shows both the FT1117M and the 1711MG side by side:
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| Size: | 29.5 x 11.6 x 30.2 mm |
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| Weight: | 18.5 g |
| Digital?: | N |
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| Speed @ 6V: | 0.11 sec/60° |
| Stall torque @ 6V: | 3.5 kg·cm |
| Speed @ 4.8V: | 0.13 sec/60° |
| Stall torque @ 4.8V: | 3 kg·cm |
| Hardware included?: | Y |
| Lead length: | 7 in |
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Most standard radio control (RC) servos have three wires, each a different color. Usually, they are either black, red, and white, or they are brown, red, and orange/yellow:
Please check the specs for your servo to determine the proper power supply voltage, and please take care to plug the servo into your device in the proper orientation (plugging it in backwards could break the servo or your device).
Note: Some of the servos we carry also have an optional fourth green wire that is separate from the three standard ones. This wire provides access to the feedback potentiometer, allowing you to directly measure the position of the output. The servos with this extra wire have "with Position Feedback" at the ends of their product names. The picture below is an example of such a servo.
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FEETECH Sub-Micro Servo FS0403-FB with Position Feedback. |
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We do not specify the range of rotation of our servos because this information is not generally available from servo manufacturers. RC servos are usually intended for controlling things like the steering mechanism in an RC car or the flaps on an RC plane. Manufacturers make sure that the range is enough for these typical applications, but they do not guarantee performance over a wider range.
This means most RC servos will rotate about 90° using the standard 1–2 ms pulse range used by most RC receivers. However, if you are using a controller capable of sending a wider range of pulses, many servos can rotate through almost 180°.
You can find a servo’s limits if you use a servo controller that can send pulses outside of the standard range (such as our Maestro servo controllers). To find the limits, use the lowest possible supply voltage at which the servo moves, and gradually increase or decrease the pulse width until the servo does not move any further or you hear the servo straining. Once the limit is reached, immediately move away from it to avoid damaging the servo, and configure your controller to never go past the limit.
You might be wondering why we do not just follow the above steps for all the servos we carry and list a specification for degrees of rotation. Unfortunately, since servo manufacturers do not specify the range of rotation, it might change from one manufacturing run to the next. They will not inform us about changes that are not specified, and we have no way of knowing if or when they might change their manufacturing process.
For more information about servos and how to control them, we recommend the series of blog posts on servos starting with: Introduction to servos.
We added the FEETECH Mini Servo FT1117M to our expanding RC servo selection.This miniature-sized servo has a stall torque of 50 oz-in (3.5 kg-cm)...