> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Power HD Continuous Rotation Servo AR-3606HB **Type:** Product page · **SKU:** POLOLU-2149 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/power-hd-continuous-rotation-servo-ar-3606hb.html ([markdown](https://core-electronics.com.au/power-hd-continuous-rotation-servo-ar-3606hb.html.md)) ## Retired product This product is retired and no longer available for purchase. Replaced by: POLOLU-3430. **Replacement:** https://core-electronics.com.au/catalog/product/view/sku/POLOLU-3430 ## How to buy - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description | [![](https://core-electronics.com.au/attachments/localcontent/0J7699_11143eac3a9.jpg)](https://core-electronics.com.au/attachments/localcontent/0J7699_12110ecac47.jpg) | |---| | The servo cable is terminated with a Futaba-compatible JR-style connector. | The AR-3606HB is a standard-sized servo that has been built by Power HD specifically for continuous rotation. At 6 V, it has a maximum rotation speed of 71 RPM (no-load) and can produce up to 93 oz-in (6.7 kg-cm) of torque. It features two ball bearings on the output shaft for reduced friction, and it offers easy access to the rest-point adjustment potentiometer. The servo can be controlled using a direct connection to a single microcontroller I/O line without any additional electronics, which makes it a great actuator for beginner robotics projects. You can find more information about this servo under the specifications tab and in its [datasheet](https://core-electronics.com.au/attachments/localcontent/AR-3606HB_39882fbb749.pdf) (399k pdf). The AR-3606HB continuous rotation servo converts standard RC servo position pulses into continuous rotation speed. The default rest point is 1.5 ms, but this can be adjusted by using a small screwdriver to turn the middle-point positioner. Pulse widths above the rest point result in counterclockwise 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. The servo has a 12" (300 mm) lead that is terminated with a JR-style connector and includes additional servo horns and mounting hardware. The following picture shows an example of the hardware that might be included (actual hardware could vary): | ![](https://core-electronics.com.au/attachments/localcontent/0J4908_51056f8d952.jpg) | |---| This robotics servo, which also sometimes goes by the Power HD part number AR3606HB, is compatible with Pololu's [servo controllers](https://core-electronics.com.au/breakout-boards-and-modules/motor-drivers-controllers/servo-controllers.html) and has a Futaba-compatible output shaft, which means it works with Pololu's [servo wheels](https://core-electronics.com.au/hardware/wheels.html) for standard servos (25T, 5.8 mm spline). This servo is also compatible with Pololu's [Mounting Bracket for Standard-Size Servos](https://core-electronics.com.au/mounting-bracket-for-standard-size-servos.html): | [![](https://core-electronics.com.au/attachments/localcontent/0J9429_260781b6772.jpg)](https://core-electronics.com.au/attachments/localcontent/0J9429_556009b7886.jpg) | |---| If you are looking for a similar servo that is capable of limited-range position control as opposed to continuous rotation speed control, consider the [Power HD standard servo 6001HB](https://core-electronics.com.au/power-hd-standard-servo-6001hb.html), which has almost the same size, weight, speed, and torque as the AR-3606HB. Note that, as with most hobby servos, stalling or back-driving this servo can damage it. **Continuous rotation servo comparison** | [![](https://core-electronics.com.au/attachments/localcontent/0J5406_2508732d798.jpg)](https://core-electronics.com.au/attachments/localcontent/0J5406_15837f1c99f.jpg) | |---| | 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) | Direction vs pulse (1ms ? 2ms) | Digital? | Feed­back? | Price | |---|---|---|---|---|---|---|---|---| | Max speed (RPM) | Stall torque (oz·in) | Max speed (RPM) | Stall torque (oz·in) | | | | [**SpringRC SM-S4303R**](https://core-electronics.com.au/springrc-sm-s4303r-continuous-rotation-servo.html) | 54 | 71 | 43 | 46 | 41 | 41.3 × 20.7 × 40.2 | CW?CCW | | | $15.95 | | [**SURPLUS SpringRC SM-S4303R 2-Pack**](https://core-electronics.com.au/surplus-springrc-sm-s4303r-continuous-rotation-servo-pair-two-servos.html) | 54 | 71 | 43 | 46 | 41 | 41.3 × 20.7 × 40.2 | CCW?CW | | | $19.95 for a pair of servos | | [**PowerHD AR-3606HB**](https://core-electronics.com.au/power-hd-continuous-rotation-servo-ar-3606hb.html) | 71 | 93 | 62 | 83 | 40 | 40.5 × 20.0 × 38.0 | CW?CCW | | | $16.95 | | [**FEETECH FS5106R**](https://core-electronics.com.au/feetech-continuous-rotation-servo-fs5106r.html) | 95 | 83 | 78 | 70 | 39 | 40.8 × 20.1 × 38.0 | CW?CCW | | | $15.95 | | [**Parallax Feedback 360°**](https://core-electronics.com.au/parallax-feedback-360-high-speed-servo.html) | 140 | 35 | – | – | 41 | 40.0 × 20.0 × 37.2 | CW?CCW | ![yes](https://core-electronics.com.au/attachments/localcontent/check-fa31fa0963023302eb66fe206c0d1e8cb1135facdac9a4e8f5b5ffcc3c3ea377_29454a38f.png) | ![yes](https://core-electronics.com.au/attachments/localcontent/check-fa31fa0963023302eb66fe206c0d1e8cb1135facdac9a4e8f5b5ffcc3c3ea377_29454a38f.png) | $27.99 | | [**FEETECH FT90R**](https://core-electronics.com.au/feetech-ft90r-digital-micro-continuous-rotation-servo.html) | 135 | 21 | 108 | 18 | 9 | 22.9 × 12.1 × 26.5 | CW?CCW | ![yes](https://core-electronics.com.au/attachments/localcontent/check-fa31fa0963023302eb66fe206c0d1e8cb1135facdac9a4e8f5b5ffcc3c3ea377_29454a38f.png) | | $8.95 | | [**FEETECH FS90R**](https://core-electronics.com.au/feetech-fs90r-micro-continuous-rotation-servo.html) | 130 | 21 | 100 | 18 | 9 | 22.5 × 12.1 × 23.4 | CW?CCW | | | $5.95 | **People often buy this product together with:** | [![Power HD Standard Servo 3001HB](https://core-electronics.com.au/attachments/localcontent/0J2142_5750078ddc.jpg)](https://core-electronics.com.au/power-hd-standard-servo-3001hb.html) | [Power HD Standard Servo 3001HB](https://core-electronics.com.au/power-hd-standard-servo-3001hb.html) | |---|---| | [![Micro Maestro 6-Channel USB Servo Controller (Assembled)](https://core-electronics.com.au/attachments/localcontent/0J1951_59595b5951.jpg)](https://core-electronics.com.au/micro-maestro-6-channel-usb-servo-controller-assembled.html) | [Micro Maestro 6-Channel USB Servo Controller (Assembled)](https://core-electronics.com.au/micro-maestro-6-channel-usb-servo-controller-assembled.html) | |---|---| | [![Mini Maestro 12-Channel USB Servo Controller (Assembled)](https://core-electronics.com.au/attachments/localcontent/0J2330_574777fc8e.jpg)](https://core-electronics.com.au/mini-maestro-12-channel-usb-servo-controller-assembled.html) | [Mini Maestro 12-Channel USB Servo Controller (Assembled)](https://core-electronics.com.au/mini-maestro-12-channel-usb-servo-controller-assembled.html) | |---|---| **Dimensions** | Size: | 40.5 × 20.0 × 38.0 mm | |---|---| | Weight: | 40 g | **General specifications** | Digital?: | N | |---|---| | Speed @ 6V: | 71 rpm | | Stall torque @ 6V: | 93 oz·in | | Speed @ 4.8V: | 62 rpm | | Stall torque @ 4.8V: | 83 oz·in | | Hardware included?: | Y | | Lead length: | 12 in | **File downloads** - **[Power HD AR-3606HB continuous rotation servo datasheet](https://core-electronics.com.au/attachments/localcontent/AR-3606HB_39882fbb749.pdf) (399k pdf)** ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/p/o/power_hd_continuous_rotation_servo_ar_3606hb__pololu_2149__00.jpg)