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I am also seriously considering a robot and these two are ones on my list. I am finding the points and details in this posting very interesting and insightful. One question. As the Tennirobo can be affixed to a tripod, can a catch net be used at the same time. I see a challenge if the height of the robot has to exceed the height of the net as obviously the ball would be projected at a much higher point. My robot use is going to be either use an robot/catch net system or a table or tripod robot with catch net. I like the idea of using a tripod but it may not practical for my usage. Any thoughts?
If you setup Tenni Robo at the center of the table, it is fairly easy to use a custom made catching net, just like the one in the picture.
While the basic advantage of Tenni Robo is that you can place it at any position you want, a critical question arises: Let's say you program your own drill. How does the software "know" where to land the balls on the table, since the setup position of the robot is not fixed?
I e-mailed the guy that makes Tenni Robo and that is the answer that I got:
Tennirobo doesn't know where is it located (it is almost impossible to calculate ball landing place depending on robot's location). You create a drill in such way:
- mount the robot to the required location and height
- create a shot with a few trials: select spin, head's incline and try a shot with selected speed (there is a sample shot button available in the app). Usually it requires 2-4 attempts for the first shot, then you know approximatelly spped for all next balls. The digital measurement of all ball parameters helps a lot, because after some time you can predict how much speed and speed should be
- create other shots
- save drill. When you are saving a shot or a drill, the app asks you to show current robot's location (zones near the table and on the table) - just tap on the zone in the app
When you are loading a shot/drill, you can filter them by zones (show only shots for selected robot's zone location)
So in essence, you place the robot where you want, and then by trial and error you find yourself the correct power, spin, trajectory etc. That is not very convenient....
But if placing the robot everywhere you want is an absolute "must", then maybe making a custom made holder for Infinity that you can mount it on, enables it to be just as mobile as Tenni Robo.