> **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

# Parallax (Futaba S148) Continuous Rotation Servo \#900-00008

**Type:** Product page · **SKU:** POLOLU-536 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/parallax-futaba-s148-continuous-rotation-servo-900-00008.html ([markdown](https://core-electronics.com.au/parallax-futaba-s148-continuous-rotation-servo-900-00008.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: POLOLU-1248.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/POLOLU-1248

## 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/media/remote_images/0J515.250_8sAWpQ.jpg%3F45cb6ffa09ba45a1a4a90e9f2b7ff4e8)![](https://core-electronics.com.au/media/remote_images/zoom-d0cfc0fffa825c4654893ef42b77cee3_BfAw38.png)](https://core-electronics.com.au/#) |
|---|
| Parallax (Futaba S148) continuous rotation servo. |

## Overview

The Parallax (Futaba S148) continuous rotation servo converts standard RC servo position pulses into continuous rotation speed. It can be controlled directly by a microcontroller without any additional electronics, which makes it a great actuator for robotics projects. The servo includes an adjustable potentiometer that can be used to center the servo and comes with a star-shaped servo horn and an 11″ (270 mm) lead.

### Specs

- Power: 4.8 – 6 V
- Top 6 V speed: 50 RPM (with no load)
- Torque: 2.7 kg-cm/38 oz-in at 6 V
- Weight: 43 g/1.5 oz with servo horn and screw
- Size (L x W x H): 40.5 mm x 20.0 mm x 38.0 mm / 1.60" x 0.8" x 1.50"
- Control interface: RC servo pulse width control, 1.50 ms neutral
- Manual adjustment port
 
This servo is compatible with Pololu's [servo controllers](https://core-electronics.com.au/#) and Pololu's [servo wheels and sprockets](https://core-electronics.com.au/#).

## Continuous rotation servo comparison

| [![](https://core-electronics.com.au/media/remote_images/0J5406.600_WDlTpk.jpg%3Fb6374314f3f370df6cd04f2f02da02d1)![](https://core-electronics.com.au/media/remote_images/zoom-d0cfc0fffa825c4654893ef42b77cee3_BfAw38.png)](https://core-electronics.com.au/#) |
|---|
| Continuous rotation servo size comparison. From left to right: SpringRC SM-S4303R, Power HD AR-3606HB, Parallax, and FEETECH FS90R. |

 |  | ![](https://core-electronics.com.au/media/remote_images/0J2319.100_sfqNEP.jpg) | ![](https://core-electronics.com.au/media/remote_images/0J4907.100_M6XhQG.jpg) | ![](https://core-electronics.com.au/media/remote_images/0J4913.100_CI2onx.jpg) | ![](https://core-electronics.com.au/media/remote_images/0J5403.100_AO1orn.jpg) |
|---|---|---|---|---|
|  | [SpringRC SM-S4303R](https://core-electronics.com.au/springrc-sm-s4303r-continuous-rotation-servo.html) | [**PowerHD AR-3606HB**](https://core-electronics.com.au/power-hd-continuous-rotation-servo-ar-3606hb.html) | [**Parallax (Futaba S148)**](https://core-electronics.com.au/parallax-futaba-s148-continuous-rotation-servo-900-00008.html) | [**FEETECH FS90R**](https://core-electronics.com.au/feetech-fs90r-micro-continuous-rotation-servo.html) |
| Max Speed @ 6 V: | 54 RPM | 71 RPM | 50 RPM | 130 RPM |
| Stall torque @ 6 V: | 71 oz-in | 93 oz-in | 42 oz-in | 21 oz-in |
| Max Speed @ 4.8 V: | 43 RPM | 62 RPM | 39 RPM | 100 RPM |
| Stall torque@ 4.8 V: | 46 oz-in | 83 oz-in | 33 oz-in | 18 oz-in |
| Weight: | 41 g | 40 g | 43 g | 9 g |
| Size (mm): | 41.3×20.7×40.2 | 40.5×20.0×38.0 | 40.5×20.0×38.0 | 23.2×12.5×22 |
| Price: | $12.95 | $14.95 | $13.95 | $4.95 |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/p/a/parallax__futaba_s148__continuous_rotation_servo_900_00008__pololu_536__00.jpg)