HK-282 Ultra-Micro Servo 2.2g / 0.2kg / 0.08sec

 __bare 713 points

change the plugs to ones that fit?

 xtremepb 3 points

yes they can, this servo is made for the mini heli's

 hyro7 8 points

this is too small for Walkera micro's...and the walkera servo has different connection compare to this HK-282. you need to switch the position of data and ground on the micro jst connector.

 0xCobalt 1 points

Thanks. It is to small for the 4#3 and V120. But it should fit into my V100D03bl. The size is the same. *hyro7 Can you tell me which position is data and which ground?

 hyro7 8 points

default HK-282 = brown(-) | red( ) | orange(s) WK-servo = white(s) | red( ) | black(-) modification for walkera RX HK-282 = orange(s) red( ) brown(-) *remember orange/white = (s) = data/signal red = ( ) = positive brown/black = (-) = ground/negative *compare the two servo to double check before connecting to RX.. =)

 Павел 171 points

Yes, it is quite powerful. But you must understand that the margin of safety is required

 ElectricAussie 2783 points

If, by regular RX you mean a standard Rx like the one that came bundled with your Tx, then you won't be able to plug these into the Rx. The have micro Molex (JST) connectors that are unique to micro receivers (i.e. OrangeRx R415). They also have a 5V max voltage limit which means you have to be careful about the Rx power source. Cheers!

 fapsauss 183 points

The rx would have to be something like the $pektrum ar6300 or the orange rx r415. You can just cut the ends off and solder on the JR ends yourself. Good luck!

 louigi600 218 points

This servo comes with micro plugs (1.25 mm pitch) that do not plug in standard RX systems (that I believe have 2.5 mm pitch). But you can salvage PC internal speaker plugs that fit in standard RX systems (provided you shave then down to only 3 contacts).

 lolo69 206 points

servo 180° it's rare regarding HTX5g please add my reponse for win 20 cent

 louigi600 218 points

You should add the most appropriate responses, not doinf so rewards useless replies like "servo 180? it's rare regarding HTX5g please add my reponse for win 20 cent [from:lolo69]"

 louigi600 218 points

Do a little google search for modify standard servo to do 180 degree. Althought the HKM-282 is very small the mopds can be applied here too, taking care to use 1/8 W or SMD resistors and a very fine tip soldering iron.

 ElectricAussie 2783 points

Most ESC's have a BEC that limits output voltage to the RX to 5V, regardless of how many cells the LiPo has. Just check the specs on your ESC to verify 5V BEC output. This should protect the servos.

 Jimmy 6 points

I you are worried, install a diode with .6 voltage drop onto the red wire of the servo with the anode toward the reciever. Those will effectively lower the 5 volts by whatever the voltage drop of the diode is. This is what I will be doing once mine arrive.

 louigi600 218 points

If your ESC has BEC it will be 5V or 4.8V. This servo will work at these voltages but might be a bit jittery. The diode trick is fine. You might like to do it on the BEC side (connect the diod on the of your BEC) so that all servos and RX benefit from the one diode.

 ElectricAussie 2783 points

You don't give any info on what you're using these on, but if there is an ESC involved it should limit the output voltage to your RX to 5V. If it's an integrated RX/ESC just be sure it's rated for 2S batts, as some aren't.

 Jimmy 6 points

If your esc provides 5 volts from the bec and you still want to lower the voltage a bit, install a diode on the red (positive) wire of the servo with the anode of the diode torwards the reciever. Make sure the diode has a voltage drop of .6 volts.

 louigi600 218 points

2S will provive upto 8.4V which is wildly out of spec on 99pcnt of rx systems. You will need a BEC or an ESC with integrated BEC. Using a BEC will make servos and RX system work on 5V.

 Jeff 28 points

So this would work right? as it lowers voltage to 5v 1A. Basic Spec. Amp rating: 10A Burst Rate (15sec): 11A BEC Current: 1A, 5V (Linear) Voltage: (2-3 cell Lipo) Dimensions: 23x18x8mm

 ElectricAussie 2783 points

Yes, this ESC should work. If the servos seem a bit jittery at 5V, you should lower the voltage about .5V using a diode (see Jimmy's reply above), but chances are this won't be necessary. Cheers!

 trueblue2k2 10 points

FYI .... This version(HK-282)of servo is designed for 3.5 to 4.5 volt operation. The other version (HK-282A)is designed for 4.5 to 6.0 volts. The low voltage version was added for compatibility with micro aircraft using a single LiPo cell. For more specs and OEM info see HK-282A discussion also.

 louigi600 218 points

I ordered 4 of these bute receivef 4 HK-282A so be warned if operating voltage is an issue.

 m_ark 47 points

i've converted 3 of these with JR connectors - straight conversion. just watch your esc voltage is no greater than 5v - they sometimes jitter a little bit, i think it's quality control of the feedback pot.

 Dave 7 points

hi mark thanks for yr reply. ive never had to change plugs over before like this. do i need to solder them or can they just be crimped?

 m_ark 47 points

there's crimp-able JR connectors sold on here that come in a 10 pack (10 male, 10 female). This is what i used.
The wire from the servo lead is TINY... only a few fractions of a mm wide, i have had to resolder these a couple times after rough 'landings' but i don't solder then (and wouldn't reccomend doing so) when connecting to the JR leads. Instead i take the terminated end out of the white connector (mini jst?) and just crimp the terminated ends straight into the JR connector with a pair of needle nose pliers - just crimp it all in there!

the alternative is just too fiddly to consider - unless you have a fully equiped smd solderstation? :P

 Martin 5 points

Yes, I have dissasembly the standard connectors from this servo. The connectors i have protect with a shrink tube and connect directly to the RX

 adamg 2 points

The black wire goes to negative which is the pin closest to the edge of the receiver, the red wire is in the middle and the brown or white wire is furthest from the receiver outer edge

 Gagenie 43 points

black or brown like on this servo is brown is negative and goes too the edge of reciver.Red in middle always.And Orange or White is signal goes inside the Rx or near the sticker of rx.

 Gagenie 43 points

Nothing sold here but I just cut off the mini JST and weld on the JR plug, easy put colors together or red=red, white=orange ,black=brown

 mickgunn 9 points

I cut the leads off & soldered a JR plug to it just be carefull to match the colored leads as the positive & negative wires are opposite on the micro lead to the JR lead.
mickgunn

 Christian 5 points

Very good and efficient. Used in the wing (ailerons) of my wood scale piper J3.

 vikas 5 points

180...........

 Gagenie 43 points

well only does about 160 dgree unless you got progrmable remote and set it too 110% movment.
But i didn't check if it realy goes farther.

 SilverSurfer 7 points

Ich mag die Servos auch für kleine Lkw´s

 ankurkaul17 111 points

yes it is the same servo..minus 1 screw lol :)

 vikas 5 points

ys little difference between hk-282and hk-282a

 Derku 729 points

Hi Ballemann, your theory would work though I have a suggestion* since you need to modify each servo anyway - you can just split off and combine each of the ve and -ve of the servos in parallel then put a diode(you will most likely need more than one) in series at the end. To clarify all the servos ve and -ve leads go to one plug with the modified diode and the signals pin of each servo are independently plugged in as normal. Good luck.

 Derku 729 points

ve means positive in my above reply, the discussion filtered out both my positive signs.

 littlephoenix 84 points

sorry, but can you explain this in in layman's term...wth is ve, what is hooking up a diode....and what is the purpose of his question...thanks

 Ballemann 209 points

Positive and negative VE are the powerleads to the servo, typically red and black or red and brown. If you connect a few diodes in series with the red lead from the receiver, the voltage will drop 0,6 to 0,7 volts per diode. This way you can drop the voltage to a desired level for 1S servos.

In my case I need to do this because I want these lightweight servos for a 2S-240mAh or 350mAh setup.

Derku: As for solving this with a 'parallel power-bus', thats a great idea for certain airframe layouts. May even save some weight when eliminating some of the wiring!

 Trance183 850 points

Or you could also use a 1Watt Zener Diode with a Breakdown Voltage of 3.6V and hook it up in reverse. The 2S should go from 8.4V to 4.8V and you will save more weight using just one diode. But this only works for low amp servos up to 1Watt such as these. Anything larger you will need more Watt Rating.

 Camboui 134 points

Diode, zener, wires, soldering... that looks weird to me. I would simply disconnect the ESC/BEC "red/ " wire on the receiver and use a dedicated 1S battery for receiver and servos (like sku 7566, 7567 or 8864).

 Ballemann 209 points

Yes you could do that, but then again you could go with a slightly heavier, 2cell compatible servo instead, because the advantage you have by using these sub-3 gram ones would be lost again by adding an extra cell to power them.

 boredom.is.me 88 points

What makes you think that they are walkeras?

 ChrisG 136 points

I measured a walkera servo from my 4#3B. The A,C and D dimensions match. B on walkera is 19mm, this servo is 16mm - so they will easily fit. Also the plug looks like the same molex type. Hence walkera "compatible", not walkeras...

 slaanesh 424 points

Hello Pavcon. Yes I've seen your other numerous posts here. I'd be inclined to wait and see if a 5V version will come out, as soldering such small diodes would be tricky as I don't have an ultra fine soldering iron.

 funflying 81 points

what type of diode and where do you source them?

 turbored21 44 points

the new ar6300 uses those plugs so im guessing thats why their calling them JR

 Matt-mid-air 21 points

Be very carefull guys,the polarity on the JR Micro JST type is reversed compared to other servo's with Micro JST connectors!!! Its VERY easy to miss and that means burnt out servo's!!!

 Derku 729 points

I received mine and it is NOT the AR6300 type plugs! rather the AR6400 type(smaller, narrower in pitch).

 Ballemann 209 points

I just got mine and it is NOT the AR6400 type plugs either..
What are they? None of the $pektrum ones, so Futaba maybe?

 Ballemann 209 points

Have a look at this, these are the AR6300 compatible Micro-JST (bottom), HKH-282 Servo-plug (middle) and AR6400 compatible Nano-JST (top)

target=_blank>

Clearly the plugs on these servos are something inbetween the two standards..
(Oh, and sorry about the shoddy quality of the picture, I have had WAY better mobile cams than my current one, the HTC desire..)

 Ballemann 209 points

Dang! Lets try that again....
target=_blank>Plugs Compared

 Derku 729 points

Ballenmann, good find - I have to admit I compared it by eyeballing them only and my misjudgement lead me to think otherwise. My mistake - sorry.

 Derku 729 points

Question now is, what type of plus is this... if there is no source for the opposite end, it means to use this servo - you have to cut it off and put your own connector on it?

 Ballemann 209 points

Yep, that is what I'll do.. The plugs don't fit any of my receivers, and making wire adapters is out of the question, as it ads weight.

Go find Glenn2626 over at RC_groups or go to his site, RC-connectors_dot_com and get plugs.. He has them all, AR6300, AR6400, micro futaba..

Get your plug type from him and crimp them onto these servos, cause they are excellent!

 downloader 376 points

My guess is 3.7g :d

 NitroCharged 303 points

It would be good to know it's resolution and centering accuracy. It is smaller and faster than the BA 2.5g servo according to the specs. This should run on 2S if 5V is it's limit. :-)

 Eric1180 2278 points

Do you mean 2S if regulated right? This servo will not handle the voltages 2S put out unregulated

 Wireman 343 points

This servo looks as small as the ones I have in my Walkera H05 Cessna. With the same connector as well.

 drrk24 848 points

compare it to the HD-1200A from www(.)chd(.)hk

 Derku 729 points

Took two photos comparing it against HXT900 and the BASO251. Not evident in the photo but this servo is very slim. Also uploaded in the files tab.

target=_blank>size comparison

target=_blank>v2

 Ballemann 209 points

NitroCharged: Here is what I did for testing centering and resolution...
target=_blank>Test Setup

 jazzy_beat 5 points

Anybody knows if this servo is full compatible with Walkera recivers, like RX-2433V, flybarles RX of "120D01" 4Ch. heli..?