SparkFun Electronics - Servo

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Servo - Small

sku: ROB-09065

Description: Here is a simple, low-cost, high quality servo for all your mechatronic needs. Small servo with a standard 3 pin power, control cable, and mounting hardware. This servo is very similar in size and specifications to the Hitec HS-55. Includes hardware as shown.

Features:

3 pole ferrite, all nylon gear
Top ball bearing
Operating Voltage: 4.8V~6.0V
Operating speed: 0.10sec/60 degree
Output torque: 1.4kg/cm (19.6oz/in)

Dimension:

22.8 x 11.8 x 20.6mm
Weight: 9g

Pricing

	1049 in stock backorder allowed

$8.95	price
$8.06	10-99 (10% off)
$7.16	100+ (20% off)

	quantity

click on image to enlarge

Comments

19 comments

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	by ketralnis +3.1 \| Sep 5, 2009 at 9:36pm +0.27
No datasheet for this one?

	by KeithRobot +1.8 \| Oct 14, 2009 at 11:25pm +0.27
I just bought 5 and they don't have ball bearings :( This should be removed from the description.

	by waffle +1.8 \| Nov 29, 2009 at 7:51pm 0
I bought 2 of these, and neither works. Total waste of 20 bucks :(

	by Jimb0 \| Nov 30, 2009 at 9:28am
Hi Waffle, I'm sorry to hear about that. We rarely hear of any problems with these servos, and we'd be happy to help troubleshoot why yours aren't working, or get you replacements. Drop us an email with as much information as you can. techsupport at sparkfun dot com

	by waffle +1.8 \| Dec 1, 2009 at 7:47pm 0
It appears that they do both infact work. It turns out my power supply was not strong enough, and the microcontroller kept resetting! Ive beefed up the PS and it works now. sorry for the confusion! PS: is it normal for them to get warm after a few minutes of scanning back and forth without load? Thanks for the help, and again, sorry, it was my mistake.

	by kav +1.5 \| Jan 15, 2010 at 4:05pm 0
))) i make the same mistake, servo become warm if you try to overturn it (turn above dead position) try dec rotation range and i think the problem will be solved))

	by I2C Master +2.2 \| Dec 31, 2009 at 5:37pm 0
Sparkfun are these full-rotation.

	by sbemail +2.6 \| Jan 3, 2010 at 4:58pm 0
Same question as I2C Master, have these been modified to do full rotation? And if not (which is what I'm hoping), what is the angle range between 0.9ms and 2.1ms (or whatever the timings actually are)?

	by eclipse +1.3 \| Jan 13, 2010 at 2:32pm 0
ok, stupid question maybe; but howmany degrees goes this servo ? 360 (Not Continuous offcourse) or just 180 ?

	by YellowFlower +2.2 \| Feb 17, 2010 at 8:23pm 0
is there any references that are useful to get these things working? tutorial or datasheet?

	by SlyVixsky +0.71 \| Feb 18, 2010 at 4:41pm 0
if someone will post whatever data they can find on the body of the servo, im sure it wont be too long before someone else finds a datasheet to share for it

	by rahuljin +1 \| Feb 19, 2010 at 8:52am 0
is there any tutorial available ??

	by NXTreme +5.2 \| Mar 18, 2010 at 1:01pm 0
eclipse: ok, stupid question maybe; but howmany degrees goes this servo ? 360 (Not Continuous offcourse) or just 180 ? Same question as eclipse. Does anyone know how many degrees of rotation this servo has? I'm hoping its at least 180...

	by NXTreme +5.2 \| Mar 19, 2010 at 2:59pm 0
Ok, I emailed tech support about the range of rotation on this servo and got a VERY quick reply back. The email I got back said that they where seeing a 90 degree range of rotation. That will work for one servo on my project, just hoping that the big servo will have a bigger range...

superbrad

+9.7

| Apr 25, 2010 at 4:37pm

I've modified one of these to be a continuous rotation servo - it's trickier than with the bigger servos. The potentiometer itself has range limits on it, and the pot shaft serves as the axis for the gears that take it to the output. So you have to bust up the pot and remove most everything but the shaft itself. And everything is pretty darn small...

Haven't tested it in my dif drive bot design yet, but it looks like it will work.

	by superbrad +9.7 \| Apr 29, 2010 at 6:32pm 0
Wrote a quick tutorial on modifying these for continuous rotation on my blog. http://bradsprojects.wordpress.com/2010/04/29/hacking-tiny-servos/

	by sbemail +2.6 \| Apr 27, 2010 at 1:11pm 0
Not impressed with this servo...one of the nylon gears stripped after less than 5 minutes of running time. The applied torque was much less that 1.4kg/cm, it was just flicking an ordinary lightswitch on and off.

	by uCHobby +1 \| Jun 27, 2010 at 5:19pm 0
Here is what I found out with this servo. Wiring: Red: 5V Brown: ground Yellow: signal Timing: Stable values Right at 0.50mS (about 85 degrees) Left at 2.0mS (about -85 degrees) Center at 1.25ms (about 0 degrees)