> **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

# Continuous Rotation Servo - FeeTech FS5103R

**Type:** Product page · **SKU:** ADA154 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/continuous-rotation-servo-futaba-s148.html ([markdown](https://core-electronics.com.au/continuous-rotation-servo-futaba-s148.html.md))

This servo rotates fully forward or backwards instead of moving to a position. You can use any servo code, hardware or library to control these servos. Good for...

## Pricing

- **Price:** $27.55 (inc GST) — $25.05 AUD, exc GST
- **Quantity discounts:** 10+ $24.29 (exc GST) · 50+ $23.79 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA154:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA154:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **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

This servo rotates fully forward or backwards instead of moving to a position. You can use any servo code, hardware or library to control these servos. Good for making simple moving robots. Comes with four different horns, as shown.

To control with an Arduino, we suggest connecting the control wire to pin 9 or 10 and using the Servo library included with the Arduino IDE (see here for an example sketch). Position "90" (1.5ms pulse) is stop, "180" (2ms pulse) is full speed forward, "0" (1ms pulse) is full speed backwards. They may require some simple calibration, simply tell the servo to 'stop' and then gently adjust the potentiometer in the recessed hole with a small screwdriver until the servo stops moving.

## Technical Details

Details:

- Operating Voltage: 4.8V~6V (5V works best)
- Average Speed: ~0.18sec/60°
- Stall Torque (4.8V): 3kg.cm/41.74oz.in
- Stall Torque (6V): 3.2kg.com/44.52oz.in
- Required Pulse: 500us-2500us
- Connector Wire Length: 30cm / 11.8"
- Dimensions: 37mm x 54mm x 20mm / 1.5" x 2.1" x 0.8"
- Weight (no horns): 40g
- Spline Count: 25
 
**Revision History:**

- As of Friday, May 8th, 2015 Adafruit are selling a revised FeeTech version with additional horns!

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/5/154-03.jpg)