Parallax Feedback 360° High-Speed Servo

The Parallax Feedback 360° provides the functionality of a light-duty standard servo, a continuous rotation servo, a high-speed servo, and encoder feedback in one convenient package.

AUD $66.95

Order As Required  

Back orders: Ship 12 units in 7 days

Our Code: SKU-004429

Supplier: [Pololu MPN:3432]


Description

Overview

Profile view of the Parallax Feedback 360° High-Speed Servo.

The Parallax Feedback 360° provides the functionality of a light-duty standard servo, a continuous rotation servo, a high-speed servo, and encoder feedback in one convenient package. Like typical continuous rotation servos, the speed of the Feedback 360° is controlled by a standard 50 Hz RC servo signal, and the speed response is nicely linear across the control signal range of 1280 µs to 1720 µs. The rest point is at 1500 µs, with a 20 µs deadband on either side. Pulse widths above the rest point result in anti-clockwise rotation, with speed increasing as the pulse width increases; pulse widths below the rest point result in clockwise rotation, with speed increasing as the pulse width decreases.

What sets this servo apart from typical other similar servos is a return signal line from an internal Hall effect sensor system that provides digital angular position feedback. Using this feedback signal, your application can make the servo to turn to and hold any angle, much like a standard servo but with an unlimited range of motion. Or, you can rotate the servo continuously at a controlled, verifiable speed as a robot drive motor. The feedback signal is a 3.3 V PWM with a fixed period of approximately 1.1 ms and a duty cycle that corresponds to the rotational position of the servo. More information about the feedback signal, including a low-level programming walkthrough with snippets of example C code, can be found in the Parallax Feedback 360° High-Speed Servo Datasheet (1MB pdf).

The recommended operating voltage range for this servo is 5.8 V to 8.4 V. At 6 V, it has a maximum rotation speed of 140 RPM (no-load), and it has a peak stall torque of 35 oz-in (2.5 kg-cm).

This robotics servo is compatible with our Futaba Servo Wheels, and it works with the control signals generated by our servo controllers, but please note that you would need a separate microcontroller to read and respond to the feedback signal if you want to use that feature. It has a 9.8″ (250 mm) lead terminated with a JR-style 3-pin servo connector, which is used to provide the servo with power, ground, and its control signal. The feedback signal is provided through a separate single wire that is terminated in a 0.1″ female connector.

This product is Parallax product ID 900-00360.

Continuous rotation servo comparison

Continuous rotation servo size comparison. From left to right: SpringRC SM-S4303R, Power HD AR-3606HB, FEETECH FS5106R, Parallax Feedback 360°, Parallax (Futaba S148), and FEETECH FS90R.

6 V 4.8 V Weight (g) Size (mm) Digital? Feed-
back?
Price
Max speed
(RPM)
Stall torque
(oz·in)
Max speed
(RPM)
Stall torque
(oz·in)
SpringRC SM-S4303R 54 71 43 46 41  41.3 × 20.7 × 40.2  $12.95
PowerHD AR-3606HB 71 93 62 83 40  40.5 × 20.0 × 38.0  $14.95
FEETECH FS5106R 95 83 78 70 39  40.8 × 20.1 × 38.0  $13.95
Parallax Feedback 360° 140 34 41  40.0 × 20.0 × 37.2  $19.95
Parallax (Futaba S148) 50 42 39 33 43  40.5 × 20.0 × 38.0  $13.95
FEETECH FT90R 170 21 135 18 9  23.2 × 12.5 × 22.0  $7.95
FEETECH FS90R 130 21 100 18 9  23.2 × 12.5 × 22.0  $4.95

Specifications

Dimensions

Size: 40.0 × 37.2 × 20.0 mm
Weight: 41 g

General specifications

Digital?: Y
Minimum operating voltage: 5.8 V1
Maximum operating voltage: 8.4 V
Speed @ 6V: 140 rpm
Stall torque @ 6V: 35 oz·in
Lead length: 9.8 in

Notes:

1
5 V is the absolute minimum required for no-load angular position control, but the recommended minimum is 5.8 V for continuous rotation speed control.

Resources


FAQs

What are the three wires coming out of my servo?

Most standard radio control servos (and all RC servos we sell) have three wires, each a different colour. Usually, they are either black, red, and white, or they are brown, red, and orange/yellow:

  • brown or black = ground (GND, battery negative terminal)
  • red = servo power (Vservo, battery positive terminal)
  • orange, yellow, white, or blue = servo control signal line

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).

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