thanks for showing us how to test a servo, previously I only knew "it's moving" or "not moving"....
@roberta.edinger94055 жыл бұрын
I thought the same thing until I I tried flying with those bad servos. I'm glad the video was useful to you.Thanks.
@amelliamendel22274 жыл бұрын
You can but a servo tester for 2 dollars
@TheJacklwilliams3 жыл бұрын
@@roberta.edinger9405 Perfect 101 video. I'm just getting started programming hardware and I wouldn't have thought of the importance of "return to zero" until you pointed it out and related it to flying. Huge aero fan and yeah I could see how this would just be rotten to the core. Funny thing is I bought a cheap adeept electronics kit to start this venture and while watching this video pulled out the servo, same one but? It has the green potentiometer. It is the Tower Pro brand model everything else the same. Going to connect it up and run my own return to zero tests. THANKS ROBERT!
@Icehso1402 жыл бұрын
A simple case of a batch of servos that failed a QC check b4 the label was put on it. Then the whole batch was sold cheap to a seller that was willing to deal with dissatisfied customers. You can declare a loss selling the bad batch, but you can't declare a loss just throwing them away. Thanks for the heads up and as always...buyer beware.
@JoeOvercoat2 жыл бұрын
Calling it a paperweight is not helpful when it’s not even heavy enough to be one. I recommend that you tell people to dispose of their electronics properly. If they don’t know how to do that just go to the nearest fire station and ask.
@jimslaughter4579 Жыл бұрын
the irony is that BOTH servos are made by Tower Pro!!! I have been to their factory and the owner is a friend of mine. The OEM for dozens of different NAMES. Product is all the same.
@jordancoleman24029 ай бұрын
Cool story bro, tell your friend he needs to do his job and stop putting junk out 🤙
@jimslaughter45799 ай бұрын
@jordancoleman2402 for the price they can't be beat. I have great luck with them. If you are expecting $100 performance from a $25-30 servo, you are delusional.
@jordancoleman24029 ай бұрын
@@jimslaughter4579 I've tried them a few times and 2 different orders had the same problem not returning to center, I'd rather spend a few dollars more and have a little trust in the servo that I put in my $500+ airplane
@jordancoleman24027 ай бұрын
@@jimslaughter4579 no I don't do that as I fly helicopters and one of my cyclic servos cost well over $100 I'm sorry you use junk.
@faultboy2 ай бұрын
That is how white labeling works...
@createsomethingclever92495 жыл бұрын
Thanks for making this, I've been struggling to get a pair of those tower hobby POSs working properly and this confirms my suspicions
@roberta.edinger94055 жыл бұрын
I'm glad the video helped.
@PropsOff5 жыл бұрын
Oh man! So glad to catch this prior to ordering them! Thank you kind sir...
@roberta.edinger94055 жыл бұрын
cool! I'm glad the video was helpful to you.
@zombieprinting26703 жыл бұрын
I've heard stories of companies buying up factory seconds an blatently reselling them as good knowing full well they are going to be for the most part defective in some way. The amount of people that don't care because of how little they paid and don't go for refunds makes it worth the companies filure rate to keep selling them. Good vid
@roberta.edinger94053 жыл бұрын
I am glad you liked it. Thank you!
@mikemierspadios70362 жыл бұрын
Karma will get them. Deceptive marketing.
@ZXXpilot10 ай бұрын
You just described 3/4 of aliexpress. But at least you can get your money back on defective goods and still keep the paperweight.. lol
@FunBitesTV4 жыл бұрын
Just wanted to post an update... I bought 2 "tower pro" servos from ebay a few days ago, these came with the green part inside. One seems fine, the other seems a bit jittery. Guess its a lucky dip....
@roberta.edinger94054 жыл бұрын
Thanks for the update Mark.
@ensoniq2k3 ай бұрын
The "Tower Pro" I've got aren't the same as these anymore. I bought a few years ago and they were just like yours. The easiest way to distinguish them IMO is looking at the bottom. The cheap stuff has wires visible, the good ones have a tiny circuit board with an IC, no wires visible from the bottom. They're also way quieter now, before they were pretty loud and failed quickly.
@mbkmmodels94063 жыл бұрын
Good video. I just bought a 10 pack of these on Amazon. I will use them for RC model boats only. Many thanks.
@orangecat9994 жыл бұрын
Wow! I'm having the same problem. Thank you for this!
@roberta.edinger94054 жыл бұрын
Cool I'm glad the video helped.
@grzegorzbrzeczyszczykiewic199 Жыл бұрын
i think the mild reaction of the servo's arm can be attributed to slow sampling rate of the circuit board that recives control signals
@flymario80465 жыл бұрын
I wanted to mention that I think they are really both the same. I purchased a bunch of the Miuzei servos and so far it's been a mixed bag. Some work great and don't shift... and others will do exactly what you are showing. I found that I have to hold onto servo arm and move it. If they hold strong or return home by themselves when you let go, they are fine. I have around 50% failure rate.
@roberta.edinger94055 жыл бұрын
I only bought 10 with a 0% failure rate so far. Just wondering how many did you buy? Because a larger sampling will produce a more accurate failure expectancy. Thanks for the information.
@flymario80465 жыл бұрын
@@roberta.edinger9405 I bought 2 sets bu only opened one of 10. Will let you know
@roberta.edinger94055 жыл бұрын
@@flymario8046 Thanks.
@flymario80465 жыл бұрын
@@roberta.edinger9405 I am backing out of my claims. I am thinking my ESC or tester was not supplying enough power. I retested them all and get the effect I claimed. They were incredibly tough actually. Sorry
@roberta.edinger94055 жыл бұрын
So are all the servos working correctly then? I hope so. I certainly don't want to be recommending sub par servos. I really appreciate you testing them. Thanks again.
@azimalif2665 жыл бұрын
Just tested my tower pros after watching this. They work just fine. Maybe there are multiple manufacturers making the same servo with the same name?
@roberta.edinger94055 жыл бұрын
I never thought of that. I think you are probably right. Thanks.
@bennettrobertson50875 жыл бұрын
@@roberta.edinger9405 EE student here, my guess is multiple manufacturers yes, same name yes, but "certified" tower pro...no. I'm guessing some are "Chinese knockoffs" and some are actual tower pros manufactured officially. Whatever plant, wherever it is, that is making the fakes is doing so very poorly. Thanks a ton, you've just helped me decide what motors to buy for my senior design project in college.
@roberta.edinger94055 жыл бұрын
Thanks, I'm glad I could help. Good luck with your project.
@thelogan46414 жыл бұрын
That makes sense, cause I bought a bunch of "tower pro"'s and they are acting as continuous rotation servos (despite the dealer stating that they were limited to 180 degrees)
@michaegi47174 жыл бұрын
two years kater: by accident I bought exactly the same two brands. From accuracy I cant see a difference. Both have a green potentiometer inside. the tower pro are much more silent.
@plant57413 жыл бұрын
Ye i think they have been updated
@roberta.edinger94053 жыл бұрын
Good information. Thanks for watching.
@cianxan5 жыл бұрын
Thanks for the advice, now I will check my all servo for these issue.
@roberta.edinger94055 жыл бұрын
I'm glad I could help.
@IAMEX3143 жыл бұрын
Thank you. I was just about to buy the 10pk of SG90.
@roberta.edinger94053 жыл бұрын
Glad I could help
@karljay74735 жыл бұрын
I just looked at the one that came with a Arduino kit that I bought last year. Mine is the Tower Pro with the "TP" on the plastic case, EXCEPT it has the green band on the edge like your Miuzei does. I have no way of testing them because I haven't built a plane and don't know how to test otherwise. You might find a use for a simple switched back and forth servo. Something where you have a detector that has it run till it hits a switch, or a sensor that makes it self correcting (meaning it keeps moving until a sensor says to stop).
@roberta.edinger94055 жыл бұрын
Good idea thanks.
@hoverbovver7 ай бұрын
Thanks for that. Enabled me to see that the 4 "Tower" ones I just bought are very likely fake. Especially as I ordered digital ones but the delivered ones don't match the photos in the Bangood advert as don't say "digital" on the label.
@StrangerInAStrange3 жыл бұрын
Thank you. Interestingly, I have MIUSEI MS18 and TIANKONGRC SG90 micro servos that are identical to yours. Both of these have the 'TP' imprint on the bottom of the case and both have the dark, instead of green, potentiometers. So far . . . . so good. I'm hoping the TIANKONGRC hold up, as they are epoxied into my wing spoiler bays!
@roberta.edinger94053 жыл бұрын
You are welcome and thanks for the info!
@giorgiolelmi81753 жыл бұрын
Exactly the same I have TiankongRc servos and no one of them works and they were also full of oil I needed to clean them individually. I need to send back them and add 1 star rating to this product.
@Andrew-iq8zf5 ай бұрын
I had a pack of these servos in my Amazon shopping basket and was wondering about them, well after viewing this video I went ahead and purchased a pack of 10 Muizei 9g servos to control points on my model railway layout. I'm sorry to say that my experience of these servos is not as good as yours and I have returned them to Amazon as not good enough quality. Why - instead of moving from one position to another at the throw of a switch they would move then jitter and when the switch was thrown in the opposite direction they would move but then jitter continually. I will be ordering some more of the original servos I ordered from Wize productions as they do not jitter on my current setup.
@honmanli52084 жыл бұрын
check your elevon mixer if it is enabled or not.
@roberta.edinger94053 жыл бұрын
Thanks for your suggestion.
@raymondwu46172 жыл бұрын
Confusingly, I have five miuzei MS18 9g servos with "TP" printed on the bottom and black potentiometers inside and a Tower Pro sg90 servo with a green potentiometer. The Miuzeis are from amazon prime and the tower pro comes from an arduino kit. From my experience, the tower pro works far better than the Miuzeis, which are less accurate and horribly unreliable. I guess those online sellers just put whatever brand stickers onto whatever servos.
@fabioseva15 жыл бұрын
Got the same problem using this servos on a robot arm project. After recording movements it’s unable to maintain position when in repeat mode
@roberta.edinger94055 жыл бұрын
I have been using servos for very many years and this is the first time I've ever experienced this issue.
@PootaurStuff4 жыл бұрын
I have 2 robot arms from Adeept and having the same problem with their brand of servos AD002's. After only 1 week of operation 1 servo stopped working, and 3 slip like crazy. These servos jerk out of alignment so fast, so much, and so bad that the robots will NOT repeat the same action that I record, they go off that bad. I ordered some Tower Pro's before seeing this video. I find the evidence inconclusive on ALL servos! Its most likely that ALL servos are made by the same company that just puts different stickers on them for the seller of their products. This is done for many products, such as batteries! All batteries come from the same manufacturer, all of them are made the same, the only difference is the brand name put on them! Same thing is going on with these cheap POS from China! All garbage, cheap crap, and hit and miss on a servo to servo basis!!!
@Tommy062353 жыл бұрын
I’m making a bomb drop for my plane and this servo is good, thanks!
@dadomen74 жыл бұрын
I wish I saw this video before I ordered damn TowerPro :D Thanks for explanation!
@roberta.edinger94054 жыл бұрын
glad it helped
@GustavoMartinZalazarGonzalez8 ай бұрын
I have a "TOWER PRO" SG90 but it doesn't have "TP" (bottom) and it does have a green potentiometer inside 😐
@nickkennedy14104 жыл бұрын
Thankyou Robert for the informative info. I'm going to check all my servos now. Maybe I can use the bad ones for parachute drop or bomb bay doors.
@roberta.edinger94054 жыл бұрын
Yes I think they will be fine for that. Let me know, Thanks.
@rightawaycarhaulers54605 жыл бұрын
Only paid 12 for mine and they were all crap SMH a month-and-a-half later and I contacted the buyer when I put them in gave me $3 FYI I tested mine when I first bought them and they all worked .theres something about hooking them up to the receiver is when you get the real results
@roberta.edinger94055 жыл бұрын
What brand of servos are they?
@Foxtures13 жыл бұрын
I ordered Muizei servos and they have "TP" on the bottom. what does that mean?
@michaelfang99843 жыл бұрын
I think it stands for thermoplastic instead of tower pro
@monkeymadness53954 жыл бұрын
This was so much help thanks
@roberta.edinger94054 жыл бұрын
I'm glad it helped.
@arbaazkhan3264 жыл бұрын
CAN WE CONVERT NORMAL FLAT MOTOR FROM 360 DEGREE ROTATION TO 90 DEGREE OSCILALARY ROTATION FROM ARDUINO. AND HOW ?
@roberta.edinger94054 жыл бұрын
Hopefully somebody on here can help you with that. Good luck.
@alanrobison86844 жыл бұрын
Thanks many times over. An rc airplane friend with many years building airplanes pretty much sized it up "a $2.00 Dollar servo is a $2.00 servo. Why stick a cheap product in something you love to do Causes lots of headaches. Buy better quality.
@roberta.edinger94054 жыл бұрын
SO RIGHT!
@STFOURNARIS5 жыл бұрын
I ordered 5 tower pro from amazon about 3 weeks ago and after they arrived I was so exited to use on my home made rc airplane (my first one) unfortunately 3 out of the 5 where junk and where not working , after contacting customer service they sent me another 5 for free, When they arrived I checked them and ones again 2 out of five where not working so out of the 10 total only five worked and did I mention one is making a grinding noice all though it works I wouldn’t trust it so technically only 4 worked.
@roberta.edinger94055 жыл бұрын
Thank you so much for posting your findings, it will greatly benefit the RC and robot community.
@mayankgautam15054 жыл бұрын
Which servo are good
@ziadsaoud17085 жыл бұрын
I have the same tower pro servo and it works just fine
@roberta.edinger94055 жыл бұрын
That's cool, I'm glad you got some good ones.
@uchihamadara18345 жыл бұрын
@@roberta.edinger9405 mine does not
@buraksanli30334 жыл бұрын
I bought same motor last year and they still works very well
@kiket20124 жыл бұрын
I also have a good Tower Pro, but apparently it has a green potentiometer, unlike the one in the video.
@Enderkruemel3 жыл бұрын
@@roberta.edinger9405 my ones are Holding up very well, i bought a Set of 20 for 15€, becourse i build a hexapod. So Not a Single one is Bad. I expected 2or 3 Bad Ones(for this price) , But still after a year of use nothing Broke. I think they are very Good for the price, But i didnt know if that is luck that all my ones are Good.
@fazenathicc37144 жыл бұрын
U just need to open the servo and place a rotation limiter on the side of the motor and gear it'll work just fine
@roberta.edinger94054 жыл бұрын
Thanks for the info.
@arbaazkhan3263 жыл бұрын
i have a problem i want a servo motor to operate in 2 different speeds with 2 diffrent clicks on button for example normal 120 degree rotation speed at single click and fast 120 degree rotation at double click using on off tactile switch using a cr123a battery.all these using a pcb or arduino in the most smallest space is it possible?
@roberta.edinger94053 жыл бұрын
Hopefully someone on here can help you with that.
@djkendo244 жыл бұрын
Have a problem with a servo. The arm turns but doesn't make a motorised sound but when I plug it in it levels out and responds to movements from the receiver still, is it a problem? I did crash the copter
@roberta.edinger94054 жыл бұрын
It may have a broken gear inside.
@danny_on_wii87443 жыл бұрын
So I’m making a rc excavator will these servos be powerful enough to dig?
@roberta.edinger94053 жыл бұрын
Sorry, not at all.
@angerwurst186011 ай бұрын
Nice Video, thank you for this good explanation! I heard that Tower Pro has a lot of cheap fake knockoffs and the originals are ok but I can not confirm it because I dont have the shown Servo.
@Rudy322257 ай бұрын
Does mixing brands with one input system as you have done not potentially introduce some variation? Maybe test each one independently.
@andycottam6154 Жыл бұрын
This is a great video but just so you know right now I went and checked my SG 90 and I have the crappy Tower Pro ones like in your video however it has the green potentiometer and doesn't have the TP logo on the plastic. And just so you know I bought mine off eBay in 2021
@Krash_fpv2 жыл бұрын
You can get the 9g micro servos with metal gears for same price maybe couple dollars more
@Tumsakari5 жыл бұрын
Same, I got a tower pro servo that does precisely do what it’s supposed to do
@roberta.edinger94055 жыл бұрын
That is cool!
@RixtronixLAB Жыл бұрын
Nice info, thank you for sharing it :)
@jasonnnnnnnnnnnnnnnn83523 жыл бұрын
I've tried that towerpro, I use 4 in my rc airplane, all seems fine except the rudder. When I'm playing like 10mins the airplane keeps going to the right so I land and recalibrated it.
@kkuenzel564 жыл бұрын
Great video! What do you think of Hobby King's Hextronix 9 gram servos. They look a lot like the Tower Pros.
@roberta.edinger94054 жыл бұрын
Thank you but sorry but I have never tried them.
@nateolmsted224 жыл бұрын
I've had both experiences within the same brand with probably 7 "different" brands. Pretty sure they're all made by the same Chinese factory. Currently working through a box of 20 miuzei servos. So far I've had 14 put of 15 good ones lol
@roberta.edinger94054 жыл бұрын
So you only had 1 bad one so far?
@jimslaughter4579 Жыл бұрын
Correct. They are all made by Tower Pro in Shenzhen, China. I have been to their factory.
@craigspicer42964 жыл бұрын
I buy Hitec and never had issues. I considered the cheap servos but i kept coming back to the fact that these give me control over my aircraft that i spent hours on building so why go cheap in this area.
@roberta.edinger94054 жыл бұрын
so right
@ivanponce96584 жыл бұрын
Great video and explanation
@roberta.edinger94054 жыл бұрын
Glad you liked it!
@waynefilkins83945 жыл бұрын
Thanks man, I was going to buy a bunch of micro servers on ebay for like $1.50 each and I bet they are the shitty ones like that one. I really want to get them as cheap as I can so is there a way I can tell which ones to get?
@roberta.edinger94055 жыл бұрын
there is a link in the description of the servos that I bought. Just check that out to see the brand because I don't remember what they were offhand. Hopefully you can find them cheaper on eBay. Thanks.
@anzacFPV4 жыл бұрын
I'm so sick of this problem. I've gone through so many trying to find some that work. I was thinking it was my receiver or something else. Thanks
@roberta.edinger94054 жыл бұрын
Glad the video helped.
@immortalmonsterhybrid9753 жыл бұрын
Thoughts come to mind that if people keep buy the bad ones then they will stop making good ones XD
@aminemarzouk6868 Жыл бұрын
I didn't know this , I made a robotic arm as a project a'd turned out to be a mess like servos don't respond in time and vibrate , now I know that the problem is the servos
@analys76223 жыл бұрын
Tower pro motors (in my case ) have this problem too. But it can be fix easily by putting an offset value of pwm to micro controller (which will be annoyed for preprogramed controller)
@justinc2633 Жыл бұрын
so do they all produce the same degree of error or do you have some method of measuring it?
@analys7622 Жыл бұрын
@@justinc2633in my case, the servo error is caused by the unbalanced potentiometer. So each of the servo errors is different and it depends on the pot and you can totally measure it. Then you can choose to modify the pot or change the Pwm threshold accordingly.
@justinc2633 Жыл бұрын
@@analys7622 interesting, im new to this, are you measuring the resistance in the circuit?
@analys7622 Жыл бұрын
@@justinc2633 yes, potentiometer is a device which is made of 2 variable resistor. So you are basically measuring the resistance between the potentiometer terminals.
@babakh203 жыл бұрын
Thank you! Just saved me another potential headache to deal with.
@genes67035 жыл бұрын
i got the Miuzei servos. Tell me if this is normal with servos because I'm kind of new to RC. When I move the control stick and the servo arm moves, the servo arm stops very slowly even after the control stick on the Tx stops. It's like the servo has a built in exp to them. I'm not sure I explained this right but let me know if you understand the issue please. thanks
@roberta.edinger94055 жыл бұрын
I don't think I have ever experienced that issue. I wish I could be of more help.
@immortalmonsterhybrid9753 жыл бұрын
This was help-full after looking for deals but then i see so many different brands that look similar and yet in other pictures the labels are different. This has made me to think that i need to buy one of each and then return whatever isnt working properly, then buy the bulk of the ones that do work properly. All this extra work for what feels like deception.
@billjensen515 жыл бұрын
Good to know this is an issue and will try to watch out for bad sellers. Or at least be more aware. Thanks.
@roberta.edinger94055 жыл бұрын
Cool, I'm glad I could help.
@thatguy.mp79504 жыл бұрын
Do you reckon these would work fine on a model boat?
@roberta.edinger94054 жыл бұрын
Not on a very fast one.
@thatguy.mp79504 жыл бұрын
@@roberta.edinger9405 i realized i don't even have the right parts for a servo, it's parts from new bright cars bastardized to control it, and it's be expensive and complicated to replace it. I'll just use a mechanical return system for now, thanks for getting back though.
@akashgangurde16514 жыл бұрын
Ok sir great can I get link to buy best working 9g servo
@roberta.edinger94054 жыл бұрын
Check the description. Thanks.
@Along5093 жыл бұрын
my question answered,thanks
@roberta.edinger94053 жыл бұрын
Happy to help
@winstonoso58213 жыл бұрын
Will the Miuzei servo fit n a px9300 sandy land? My stock servo keeps going out. Gets stuck turning to the left.
@LhDiy5 жыл бұрын
I have just receiving a tower Pro sg90 with a green potentiometer inside, just like your Miuzei. New batch ? It is not tested yet.
@roberta.edinger94055 жыл бұрын
The reviews on amazon are all over the place. Some of the tower Pro sg90s work and some don't. Please let me know how yours test. Thanks.
@did3d523 Жыл бұрын
on the pictures on amazon the muizi model have Metal Gear pignon on motor not in your video??
@Funcentric4 жыл бұрын
That's a perfect demonstration of the issue you're talking about. Thank you, particularly for the detail about the green gyro to tell the difference between the working and non-working ones.
@roberta.edinger94054 жыл бұрын
Glad it was helpful!
@jimslaughter4579 Жыл бұрын
the label doesn't tell you anything. It's just what the seller wanted printed up to put on the servos they ordered from Tower Pro. I had my own line called Hurricane. Several different servos. They were all made by Tower Pro but with my label.
@ramtek2702 Жыл бұрын
Very informative but impossible to predict before purchase. I believe a servo checker is a good investment.
@lian70924 жыл бұрын
my tower pro servo i got in the kit has a green potiontiometer and is not glitchy :/ , so the stiker is not the problem
@roberta.edinger94054 жыл бұрын
Thanks for the info.
@AlexDiesTrying2 жыл бұрын
I guess they might be alright for continuous rotation (since the potentiometer gets bypassed). But I must say that I wouldn't want to put the cheapest possible servos into airplanes anyway. And of course I've bought 10 servos for 17 bucks before watching this and now they're at home and I'm in the library and I can neither confirm nor deny the presence of crappy servos in my apartment until much later...
@FatParamotorGuy11 ай бұрын
It looks like you have a Tower Pro Counterfeit and a Tower Pro copy
@gh16-5 жыл бұрын
are all the S90 nano servo working at 180° ? how can we sure when we buy it ? Thanks
@roberta.edinger94055 жыл бұрын
Sorry, I didn't test for full 180°. I was just testing for consistent movement.
@nathanw57475 жыл бұрын
i have ? how did you operate both of those at the same time and what's your controller mix, and Evelon settings?>
@roberta.edinger94055 жыл бұрын
Evelon? Both servos on the same channel using a Y cable. No mix, No expo, No elevon. Yes the servo is bad.
@greg00634 жыл бұрын
It's a shame, real brand name Tower Pro servos are generally very good they unfortunately are subject to being ripped off and bad copies get out there. I've been burned before with the same issue. Emax has some decent budget servos and have a scratch off identification tag on the boxes to authenticate they are the real deal.
@roberta.edinger94054 жыл бұрын
Thanks for that information!
@davidm23865 жыл бұрын
Thanks bro, I was about to order the bad one's before I thought to check for reviews. This helps
@roberta.edinger94055 жыл бұрын
I'm glad I could help.
@gavinli20863 жыл бұрын
yeah, I have a similar experience doing my senior project. I thought it was my code or design mess up, but really just the garbage servo :(
@roberta.edinger94053 жыл бұрын
Sorry to hear that. Appreciate your comment.
@mehmetbaran34474 жыл бұрын
Hi Sir, I am doing some reserch about making my own motion simulator using diy build actuators with servo motors. I will be controlling the servo motor with Simtools software through arduino. As far as i know, the servo motor on the actuator should have encoder, but what kind of encoder ? can you help me out please. What should i ask to the manufacturer for the specifications?
@roberta.edinger94054 жыл бұрын
Not really an encoder, just a potentiometer. www.n3ox.net/projects/servo/servo.jpg
@mehmetbaran34474 жыл бұрын
@@roberta.edinger9405 thank you. i will check it
@benjaminpauza159 Жыл бұрын
I also had problems with those. A different problem but they were all faulty
@stevendegiorgio3143 Жыл бұрын
I also want to add here,This problem happened to a Spektrum digital 9 gram servo.Its a $20.00 servo !!!
@AXE6684 ай бұрын
Are these genuine Tower Pros? Have to say I have a certain amount of concern about companies on Amazon selling counterfeit items.
@bamsgian97593 жыл бұрын
I got best tower pro sg90, even it didn't make noise when moving.
@SpiritofFire55 жыл бұрын
The "TP" may also refer to it being an unlabeled type of "Thermoplastic", as I have one with a "Miuzei" sticker and it says "TP". However, it has the black potentiometer inside so I took it apart and tested the POT in mine and found that it has a LOT of play in it before it changes the signal enough to move the motor. it also seems that the circuit on this servo outputs current to the motor proportional to the signal change from the POT, so at very small changes in angle, it doesn't output much current for the motor to use, so the torque is really low. Circuits in other Servos I have from "Miuzei" (with the yellow POT) always output consistent current regardless of the POT rate of change. Seems like a cheap workaround for counteracting something like the servo overshooting the target angle or something due to poor accuracy in the POT.
@roberta.edinger94055 жыл бұрын
WOW! Thanks for checking that out. Do you know of a cheap and easy way to fix them.
@SpiritofFire55 жыл бұрын
@@roberta.edinger9405 Thank YOU for the video! I didn't even notice that some of my servo's were bad until I saw it. Unfortunately, i can't think of a good solution. I'm not a certified electrical engineer so take my words with a grain of salt. They seem to use a slightly different microchip (I've found some with KC8801 and some with KC9806 and some that are unlabeled) so changing out the POT would probably just cause problems. You would need the datasheet for the specific chip, and then some kind of transistor switch that's controlled by the low output change from the POT spliced in between the POT and the microchip to rectify the low current. The best option is probably just finding a reliable supplier for the good batches of servos, if one exists.
@roberta.edinger94055 жыл бұрын
@@SpiritofFire5 Thank you for the information.
@jimslaughter4579 Жыл бұрын
The TP is for Tower Pro!!!
@margaretf7184 жыл бұрын
Did the servos come with the arms? The amazon product descriptions don't specify that they do.
@roberta.edinger94054 жыл бұрын
Yes, mine did come with the arms.
@errorsmasher4654 жыл бұрын
Thanks for this video 😘😘😘
@roberta.edinger94054 жыл бұрын
My pleasure 😊
@lawrencelimzx6 ай бұрын
Irony that the towerpro servo on my hand has both potentiometer and TP labeled. I suppose it might be due to different seller.
@wyattb31385 жыл бұрын
Are ElectroBot SG-90 Micro Servos good?
@roberta.edinger94055 жыл бұрын
The customer rating at Amazon for the ElectroBot servos: amzn.to/2Ymlo5l are 3 1/2 stars while the Miuzei servos: amzn.to/2KyvPg4 are 4 1/2 stars. I hope this helps. Good luck.
@wyattb31385 жыл бұрын
Robert A. Edinger thanks. I’m gonna the Miuzei servos instead.
@aiki63785 жыл бұрын
In my country they cost >1$ each, the reviews are good. Do you think it will be like yours or even worse?
@roberta.edinger94055 жыл бұрын
It is hard to say. There seems to be a lot of inconsistency with them.
@aiki63785 жыл бұрын
@@roberta.edinger9405 i see..... Do you think i should buy one just to test, because the reviews are good, but it look exactly like your towerpro. If i shouldnt which brand is a good alternative to that servo, like emax08ma or emax08md?
@roberta.edinger94055 жыл бұрын
Generally, you can't go wrong with a good brand name. Unfortunately, I thought Tower Pro was a good brand, but all of them were bad. The Miuzei brand servos are what worked for me.
@milanbalog59984 жыл бұрын
thank you for the video perfect helped me thank you
@roberta.edinger94054 жыл бұрын
Glad it helped!
@alpemxyz5 жыл бұрын
I have 2 towerpro servos, one of each type. I thought mine was broken.
@roberta.edinger94054 жыл бұрын
A lot of bad ones out there.
@biffoswilly4 жыл бұрын
My advice is to always run your servos on a proper tester for a good few minutes each one before committing to the air. (but no offence to you at all but you know this now) We are all getting to know that Chinese stuff is totally hit and miss, its pretty good when it is good but mostly miss and the Chinese dont care too much about consistency in quality or longevity for that matter ( they are happy to change stuff thats crap but its the hassle) so if you get a good item or set - its just pure chance so at $17 for 10 of these suckers - you kinda get what you pay for. I do feel your frustration as you are the innocent party here, as the stuff should be fit for its purpose and work as intended. So I would pack it all up and send this junk back to Amazon for full refund, despite when they were bought. I feel Amazon are very much at blame for perpetuating poor quality products coming in from China by continuing to import without properly policing / checking this sub standard useless crap.
@roberta.edinger94054 жыл бұрын
Good advice thanks!
@rakeshbalakrishnan60293 жыл бұрын
May be they used log potentiometer instead of linear potentiometer!!!
@roberta.edinger94053 жыл бұрын
interesting, that could be.
@sanwomashi17512 жыл бұрын
buy MR995 (rotate) or MG996R (180 degree) for 3 USD and you have metal gear and 13 kgcm
@alexkaranda1118 Жыл бұрын
These are the same servos, just with different labels. It happens every day with the China shit. It is even possible that servo 1 was made in the morning and servo 2 in the evening.
@hasanamkieh73864 жыл бұрын
This is amazon brother, even though, I don't understand this "Why do you buy from amazon?". We all know that Amazon is an American company that looks out for money more than the quality of their stuff. Still, I am sure that 90% of their products on amazon are from China. If you buy from china, it is much better and WAY cheaper, you bought this for 1.7$, eh that is goddamn a lot. I can buy it with 0.6$ per each from Aliexpress and if it was broken, I can open a dispute and make them pay me back with recording a video as a proof for the chineese company.
@roberta.edinger94054 жыл бұрын
Thanks! I will look into Aliexpress.
@PootaurStuff4 жыл бұрын
I just got in a 6 pack of servos made by Tower Pro. All of them have the green pot, but no markings on the bottom, except the little trash can symbol. I had to order new servos because the ones used by Adeept Robot Arm use a AD002 that slips out of alignment like crazy! Their AD002 is made where you can't see any of the insides. These servos are pure garbage. I've had 1 go totally bad, then 3 that slip. This is why I ordered new ones. I am hoping my new ones work better. I am starting to believe that ALL micro servos are cheap pieces of crap and its a hit and miss kind of thing if you get a good one or not. So I think all of us are back to square one on which brand is a good or bad one. Its a sure bet that ALL micro servos are most likely made by the same company and just put a different sticker on them for the buyer. So many products are done this way coming from the same source! All of these seems to be cheap pieces of crap made in China?
@roberta.edinger94054 жыл бұрын
I think you are right that its a hit and miss kind of thing.
@tasnimakhtar52595 жыл бұрын
How can i fix servo gears?
@roberta.edinger94055 жыл бұрын
The best way I know is to replace it with a good gear from a bad servo.
@dextersxxxxlab2 жыл бұрын
Interesting video. Never experienced this and have a lot of those tower pro servo's in little home made depron planes and converted toy rc cars. Maybe they are all doing this since none of those planes fly straight ever. but I had the idea this had to do with every time different batteries and mini camera on or off the plane, wings not perfect in the same place because elastic band mounting etc. Not a nice way to fly but will make you a better pilot in the end because you learn to fly with airplanes that never fly consistent. Have to do a check like you did. Thanks!
@Petardozord2 жыл бұрын
Because these aren't tower pro, but just copies. I have bought few faulty parties like this. One was very ridiculous. basically that servo was switching from regular one to continous rotation, randomly. It was bought in 10 pcs set and no different that other. Just chineses quality control.
@kuoster4 жыл бұрын
I haven't had a chance to get my hand on a genuine TowerPro yet, but I know there're a lot of cheap knockoffs out there. I think genuine TowerPro servos aren't that cheap.
@roberta.edinger94054 жыл бұрын
i agree
@eastcoastbreed5511 Жыл бұрын
I'm confirming 4 years later, these motors do not have a potentiometer. I bought 4 of those 4 none had a potentiometer inside like all my other servos.
@hoverbovver7 ай бұрын
How do they work at all without a potentiometer to tell the current output position? Or are they just pulsing the motor on for say 0.1 second one way and then 0.1 sec in reverse, which would explain the lack of accurate centering?
@arshalsebastiansaiza46764 жыл бұрын
what about mi toot servo
@roberta.edinger94054 жыл бұрын
I have never tried the Mitoot servos. What do you think about them?
@nightmareinaction6294 жыл бұрын
I figured dont use blue plastic servos on anything great for small.light weight projects etc i tried them on my trex450 and wow they over correct too much and it shakes back and forth the helicopter and when I did a hard landing they all broke lol
@roberta.edinger94054 жыл бұрын
Thanks for your information.
@vaj14143 жыл бұрын
4:49 You"re lucky with the black pot, mine doesnt have one at all 🤣🤣