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

Good servos, cant beat the price for arduino projects etc.

First time ever doing anything with servos but everything seems to be working as it should. :)

They are not the strongest motors but for the price they work just fine and are pretty responsive.

Good customer service; helped me in a pinch. make sure you use 5v power as 3.3v is too low for these models, I guess.

Good servos. For the makers amongst us, the servo spline is 21 teeth at .25 modulus that you can make in fusion and print with a resin printer

One of the servos was not working, the others were ok, I needed 5 for my project

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.

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.