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PostPosted: 06 Mar 2017, 19:31 
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Hi all!
My name is Sergey, I am from Ukraine, and I'm a big fan of table tennis. Few years ago I started to develop my own programmable table tennis robot. Let me show, what I've created since now

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The robot has many parameters, which provide fine-tuning of all hardware – you can configure each part of robot from an Android application
    Motors speed limits
    Servo motor limits
    You can use bipolar stepper motor or geared DC motor for ball feeding with controlling of motors parameters
    You can setup sound beep before shoot
    Self-learning system for use any IR remote
    An optical sensor used for detecting ball near motors. You also can setup sensor level from Android device

The robot can work in different modes:
    One preset mode with real-time controlling of parameters
    One out of five programs, which you can create and save in robots memory. It allows you to start them just with IR remote without any smartphone

The robot is controlled via Android application with Bluetooth LE (app was written with Xamarin Forms framework). You can setup tons presets and create a program based on them - up to 200 presets for one program. After that you can run a program from IR remote even without a smartphone.

Also, you can use any IR remote, because robot can learn commands from any IR remote and save them for the future.
My robot is still under construction.

Now I am a participant of "ST Embedded World 2017 Contest" with this video https://community.st.com/videos/1284-table-tennis-robot.
If you enjoy my project, please support me - please like this video at st.com (registration is required, it takes 2-3 minutes). This will help me to win 3D printer, so it will give me ablility to continue my work. Thank you.

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http://www.vedroitt.com/


Last edited by vedroitt on 06 Mar 2017, 20:29, edited 1 time in total.

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PostPosted: 06 Mar 2017, 19:53 
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Very cool! :clap: :clap: :clap:

So it looks like it has 2 wheels, which can be controller independently, right?

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PostPosted: 06 Mar 2017, 19:56 
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haggisv wrote:
So it looks like it has 2 wheels, which can be controller independently, right?

Yes, you are absolutly right. Step of speed change is 50rpm, speed range of each wheel is 700-7000rpm (can be extended up to 8000rpm). And any of them can be reversed.

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PostPosted: 06 Mar 2017, 20:00 
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I love the idea of making everything programmable. :up: In theory you should be able to produce any type of spin and speed independently. Unfortunately, it's very hard to make them truly independent, even the top robots have trouble with this.

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PostPosted: 06 Mar 2017, 20:06 
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I think with 50rpm speed step you really can do any spin. This is real precisely speed, which measured by system - not approximation.
But you also must have a patience for creating programs for yourself (then you can simply save them in your smartphone)

P.S. Sorry for my English, it's not my native language

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