When I built the COR3 robot I started to have some fun programming it. But then I wanted to add a ultrasonic sensor on my robot but I can't seem to find a way to place it on my robot. If you can please help me where to put it I will attach a photo to show you more information and a link.
The ultrasonic sensor is useful for navigation. This robot design has a nice skirt and positioning the ultrasonic sensor should not interfere with that skirt. Also the ultrasonic sensor is excellent at detecting right angles like the floor meeting a wall. So, I'd recommend positioning the sensor on either a side (for following along a wall) or the back (to slow down just before reaching a wall when backing up). It doesn't matter a lot whether the sensor is mounted vertically or horizontally.
So, given all that how do you mount it on the robot? Pins and a couple beams or right angle beams. You might also find an existing small pin that can be replaced with a deeper pin. Maybe the better answer is lots of trial and error.