> **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 Micro Servo - FS90R

**Type:** Product page · **SKU:** ADA2442 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/continuous-rotation-micro-servo-fs90r.html ([markdown](https://core-electronics.com.au/continuous-rotation-micro-servo-fs90r.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## 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

Need to make a *tiny* robot? This little micro servo rotates 360 degrees fully forward or backwards, instead of moving to a single position. You can use any servo code, hardware or library to control these servos. Good for making simple moving robots. Comes with five horns and attachment screws, as shown.

Good for beginners who want to make stuff move without building a motor controller with feedback & gear box, especially since it will fit in small places. Of course, its not nearly as strong as a standard servo. Works great with the Motor Shield for Arduino, Adafruit's 16-channel Servo Driver, or by just wiring up with the Servo library.

To control with an Arduino, we suggest connecting the orange 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

- [Datasheet](https://cdn-shop.adafruit.com/product-files/2442/FS90R-V2.0_specs.pdf)
- No load speed: 110RPM (4.8v) / 130RPM (6v)
- Running Current (at no load): 100mA (4.8v) / 120mA (6v)
- Peak Stall Torque (4.8v): 1.3 kg/cm / 18.09 oz/in
- Peak Stall Torque (6v): 1.5 kg/cm / 20.86 oz/in
- Stall Current: 550mA (4.8v) / 650mA (6v)
- ​Dimensions: 32mm x 30mm x 12mm / 1.3" x 1.2" x 0.5"
- Wire Length: 240mm / 9.4"
- Weight: 10g
- Spline Count: 21

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/2/4/2442-02.jpg)