9g Metal Servo Gear RC Robot – SunFounder SF180M Digital Half Metal Semi-Metal Micro Servo Motor Helicopter Airplane Boat Robot Control 2pack

This is a really nice servo, very smooth and the precision is excellent. I did notice one peculiarity, however. Most analog servos will not "hold" their position when you stop the PWM signal. At least they won't resist you turning them. These servos hold their position even after the PWM signal is switched off. In order to completely prevent them from holding a position under power, you need to actually cut the power to the servo, otherwise it will continue being locked to the last position while actively resisting any manual turning and will make a very faint humming noise. So this was an interesting observation. For those who are concerned about power consumption, be aware and modify your circuits accordingly. With that in mind, it's an excellent servo

They just wott

I have purchased mini servos from different vendors for my projects and have not been very satisfied until these. The first thing is to make sure the servos you purchase are digital and NOT analog. These are digital and the chatter/drift I had before is gone. Wished I had purchased these first as the rest have been a waste of money.

Can any of you help me? I'm trying to build a gyrocopter to get me closer to the moon, so I can use a telescope and see what this funny light is on the moon. YUOu see it? I'm lookin' right at it! What is that?Ordered these thinking I may be able to build that chopper, very small. Couldn't lift a fairy fart if you ask me

These are very fragile with plastic gears. If the servo is over stressed, the internal gears will strip.

I guess you get what you pay for. The value would be fantastic for what I need them for, but that only counts if they actually worked.First of all, I ordered two of these servos and they showed up a day later than they said they would on Prime. No big deal. But, then they show up and I put them on my servo tester and neither one did anything.....not even a buzz or a chirp.I realized they are not very expensive but I figured I had a least a 50/50 shot at one of them working. I verified that my tester is working properly and it does....I just got two servos dead on arrival which is a first, as I’ve never gotten bad servo in all my years in this hobby. I’ve also never purchased servos from Amazon either so I guess there’s a first for everything.Overall, the size was exactly what I needed. But, I am disappointed that they do not work at all. I will be sending these back asap. I hope the next set will be quality checked before they are sent out.

SunFounder is a great company. Don't know much about them but I buy a lot of 3D printer/arduino/robotics type stuff and they have never sent junk. Just read the spec sheet and you'll get a good quality product from them.

good