Omnibot 5402 Head Turntable & head base REMIX

 This uses this model from MakerOnline for the turntable part, I have only added the base for which you mount onto the Omnibot. Works best if used in combination with servos attached to the arms. You need to get the top part of the model from this link (https://www.makeronline.com/en/model/Turntable%20-%20Simple,%20Robust,%20and%20Servo%20Driven/9028.html?trackModuleType=6), which is the original creator of the turntable. 
 

You may have to cut/trim certain sections to fit exactly but from my testing on 4 different Omnibots, it doesn't always fit the same, so make sure to adjust it as needed to fit exactly how and where you need it. It should be mounted on the lowest part of the curvature that goes downward from underneath the rear plastic “shelf” where the back visor support rests on. You may want to tape/glue/Velcro the visor to either the front or rear body plate to make adjusting the position of the head a bit easier when fitting the turntable head base into the body. I recommend starting from the back of the body, and then when the head is in, attach the arms so the base has more things to sit on. There are also holes so you can zip-tie/tape the base in place against the side of the body (the screw holes that extrude through the body and connect in the middle to seal the body are a good place to attach it to, however it makes disassembly very difficult 

Parts:
The base

4 13.5mm Ball Bearings (metal works best but can also print)

The top half of the turn table

1 Standard 360 degree servo (or 180 degrees if you only want partial movement, makes wiring simpler)