9g Continuous Rotation Servo - FS90R (1.5kg/cm)

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SKU: CE09377 Brand: Feetech

Continuous rotation servos are perfect for adding small form factor motors and wheels to robots.

$5.25 AUD, inc GST

$4.77 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Tue, 7th of Jan

Quantity Discounts:

6-50 $4.39 (exc GST)
50+ $4.05 (exc GST)

Recommended Essentials:

PiicoDev Servo Driver (4 Channel)

$18.55

Create your own small form-factor robot with these FS90R servo motors.

Adjust the zero or middle point by adjusting the potentiometer underneath with a screwdriver. A middle point is a pulse width where the servo motor isn't moving. Higher pulse widths will start the motor moving in a clockwise direction and lower, counter-clockwise.

Grab a couple of these sweet wheels to add motion or use the included horns to drive gears or push-rods.

If you need a bit more torque for the same size and voltage check out this version with metal gears.

Specifications

Model: FS90R
Weight: 9g
Arm Angle Limit: No Limit

Operating Voltage: 4.8V - 6V
No load current: 130mA @ 6V
Rated Continuous torque: 0.5kg/cm @ 6V
Peak Torque: 1.5kg/cm @ 6V
Stall Current: 800mA

Gear Type: Plastic Gear
Size: 22.5mm x 12.1mm x 27.7mm
Spline: 21T

Includes

FS90R Continuous Rotation Servo
Servo Horn and fastener pack

Dimension Drawing

fs90r dimension drawing

Examples

Raspberry Pi Pico - Micropython

import machine
import utime

pwm1 = machine.PWM(machine.Pin(0))
pwm1.freq(50)

min_s = 1300
max_s = 8500

mid_p = int((max_s - min_s)/2)

def map_range(x, in_min, in_max, out_min, out_max):
    mapped = (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
    return int(max(min(mapped, out_max), out_min))

def servo_wrapper(val):
    return map_range(val, 0, 180, 1500, 8000)

# Useful while attaching servo horns
# or finding the zero-point for continuous servos

# while True: 
#     pwm1.duty_u16(mid_p)

while True:    
    for i in range(0,180,10):
        print('Angle/Speed ', i)
        pwm1.duty_u16(servo_wrapper(i))
        utime.sleep(0.2)
        
    for i in range(180,0,-10):
        print('Angle/Speed ', i)
        pwm1.duty_u16(servo_wrapper(i))
        utime.sleep(0.2)

Check out our other options to make your projects move!

Maker Favourite Servos - Add them to all the projects where you need movement!

High Power Servos - perfect for RC and Mechatronic projects:

Servo Accessories - Essentials for any robotics project:

Smart Servos - Offload some computing and use the latest in Servo Technology!

This product is listed in:

Components & Parts>Motors>Servos>Continuous Rotation Servos

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$11+ for Express Post (typically 2+ business days, tracked)
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Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

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International Orders - the following rates are for New Zealand and will vary for other countries:

$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

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