I found this Pan/Tilt Bracket kit simple to assemble. My only disappointment is that the RP camera can only be attached by double sided tape. The camera module has 4 holes on the board which unfortunately cannot be used to secure it. Otherwise the kit works as advertised.

The servos are no good for the one I got. Followed the assembly instructions, everything centered. Tested it and it worked fine at first. I left it sit for a few minutes to get a cup of coffee and I heard a lot of buzzing. When I got back to it it was really buzzing good. I went to unplug the servos to see what was up and they were very hot and I noticed white plastic from the gears on the inside of the clear case.

I did what anyone would do, I took it apart to see what went wrong. The mechanical stop is being maxed out too much. BTW, I used the Sparkfun Pi Servo Hat on a Pi-3-B+.

All in all the Pan/Tilt brackets are great for the price! The servos I wouldn't pay a dime for, but they just happen to come with it.

Things don't quite snap into place as they should; many of the parts don't match the description on sparkfun website page or the instructions shipped with the kit; and the frame does not sit up completely straight after assembled (the camera holder won't keep the camera exactly horizontal without slightly tilting the base to compensate for the 'non-square' (not 90degree) alignment between the parts). But if you are skilled enough, good with knifes so you can cut and/or trim the plastics here-and-there, you will like it. At the end of the day, it works.

This is an easy-to-assemble pan/tilt bracket kit that utilizes servos to move on two axes fit for camera and helping-hand applications. Everything is included to get this kit assembled, even the servos.

This product is made like a cheap chinese knock-off and can be bought elsewhere for much cheaper. The screws aren't the right size, the directions are bad, and you have to cut the servo attachments to make them fit inside of the frame. However it does work.

First off, it looks like the assembly guide was written some time ago and the servo motor parts have evolved a bit over time so keep this in mind as you do the assembly. I had researched things a bit before the kits arrived and found that the servos are driven by a PWM signal whose period is 20ms (50Hz) and whose duty cycle is between 1 and 2ms. This was supposed to span the 180 degree range. I found that it was closer to 90 degrees instead. I wrote my own program (using the RPi.GPIO servo code) that would allow me to step up or down on command. I found that the servos actually responded to a duty cycle from about 0.46ms to 2.42ms and that this range did give me the full 180 degree swing (the duty cycle was measured with a logic analyzer). I bought three of these units and all six servos responded to this range. The assembly guide talks about manually centering the servo by twisting the shaft to find the end points of the swing and then twisting it to the center. My little program, which I used to test each servo before assembly, automatically centered the shaft as it exited and I found this to be a little easier (and probably more accurate). I don't know how long the servos will last but they are available on Amazon if you need to replace one. In summary, I'm quite pleased with the units - exactly what I needed and extremely low priced.

As others have noticed this doesn't assemble well right out of the bag. Its a good deal if you just want two sg90 servos. It does require some hacking with an exacto and nippers to get it assembled.