4Pcs SG90 9g Micro Servos for RC Robot Helicopter Airplane Controls Car Boat

These are very good quality. I have used them with a raspberry pi camera to add tilt and pan functionality.It was a little bit of work to get the camera to attach to the mount and to get it to stay in place but I’m sure there were better ways than how I did it.But functionality, it works well and wasn’t much work to get put together!

Here’s the deal, I have no idea how these things work but my son asks me to order these things often for his 3D helmet that he made. I’ll admit they are pretty cool.

Servos what else do you need to no

Fun and strong. Not extremely accurate but they are good for what they are. They move fast (not sure the limits) and can get a little jumpy if the voltage simply and duty cycle is not perfect. One of them popped open while operating a super light load so I put 4 stars.

Good servos tested well at 5V

Gave a 3 star for 3 good servos. Have others, that work ok in projects, that I don't want to mess with. So I won't be retuning them. I'll be watching the others closely. Will be ordering more from another name, as I think they all manufactured in the same factory in China and sellers have their name stamped on them.I guess I'll have to test, as soon as I receive them, so as to not have the same issue again and I can send them all back.

At 50Hz a pulse width of 0.5ms corresponds to (0 deg) and a pulse width of 2.5ms corresponds to (180 deg).So a 2.5% duty cycle to 12.5% duty cycle is the range.The photo depicts 1ms(0 deg) to 4ms(180 deg) as the range which is not correct.All 4 worked normally and were able to traverse 0 to 180 degrees.They are not high end servos but for the price they work fine.

Garbage. All the servo didn't work. I still have the screws. That is the most expensive hardware I ever bought. Run away from this vendor.