ūüéČWe can now proudly present the winners of the TAPAS Community Challenge 2018! ūüéČ
Congratulations to Team "Wireless Charging" (idea 56). We are really excited for all finalists and a really big thank you to all participants for your interest in this challenge!

We got over 200 submissions! 65 ideas got one or more TAPAS boards, 10 submissions were presentation-ready.
And now we have 5 finalists! YEAH ūüėÉ The finalist's idea numbers were 40, 56, 68, 212 and 213.
What's next?
We are now preparing the next steps for you, the community. Please stay tuned!
We are working on a forum and a separate webpage. If you have any question please don't hesitate to contact us via email!

Single joint wall mountable robotic arms to switch rotary and flip switches

This project is aimed at developing a simple solution to switch on and off, existing rotary and flip switches using a single link robot arm whose joints can be taught to perform the operation and can remember these motions to perform these tasks later. This solution can be used in every house hold to actuate simple automation tasks remotely or based on fixed timing.

Technical setup: 

Attached herewith.


Materials required:

  • Arduino/ Raspberry Pi
  • Tapas as motor controller
  • 2 servo/stepper motors (7N-m max load torque)
  • 3D printed manipulator.
  • Aluminium links with motor couplers (¬†Lexan 2mm).
  • Aluminium C-couplers for Motor seating.
  • Laser distance measurement sensor (30 cm range) - for localization.

The arms are fixed onto the motors in the configuration shown in the image attached with motors fixed on each link using motor C-couplers. The 3D printed manipulator is fixed on to the tool center point of the robot using fastened C-couplers.  The sensor is mounted on the manipulator. The mototrs are controlled using the TAPAS boards which recieve commands from the Raspberry pi or Arduino.

This combination is then calibrated to find its Denevit Hartenberg parameters that can be used to control the robot in 2DoF (Degrees of Freedom).

Laser sensors can be used to localize the robotic arm with respect to the switch when fixed on a wall. The configurations can be taught by the user and thus the robot can return to these positions easily by finding its position in the localized coordinate system measured during the teaching phase.

The Tapas can be used to perform force control on the manipulator using current based force estimation techniques.

Team members : 3 (including me).

TAPAS boards required: 1 (force control + motor control) 


  • Sandeep Menon
  • May 31 2018
  • Jun 4, 2018

    Admin Response

    this idea will get one TAPAS dev kit

  • Admin
    Nora Schille (TAPAS team) commented
    June 04, 2018 09:01

    Hey Sandeep,

    thanks for your submission. Nice idea!
    We want to provide you one TAPAS board.
    One of my colleagues will message you shortly.

    Nora @ TAPAS team

  • Admin
    Nora Schille (TAPAS team) commented
    June 04, 2018 14:57

    And something else... 

    We are really excited to see your progress! 
    Please post the progress within your idea board submission.
    PS: We want to do a community call with you! Please use our doodle to find a date which fits best for you. :-)

    Nora @ TAPAS Team

  • Sandeep Menon commented
    June 05, 2018 07:20

    Hey Nora,

    Thanks a lot! 



  • Sandeep Menon commented
    June 11, 2018 11:41

    Unpacked & tested 

  • Admin
    Nora Schille (TAPAS team) commented
    June 12, 2018 06:56

    Whoop Whoop! Yeah :-)
    I wish you success working with the board!


  • Jacqueline Hofmann commented
    June 20, 2018 13:04

    Hey Sandeep,

    Please keep in mind that the submission deadline for your presentation is on 24th of June! We are already looking forward to seeing how you brought the TAPAS board to life! :-) Remember that you still have time to work on the implementation of your idea after the submission!

    Please upload your presentation and everything you want to share with us in your idea board entry.

    Good luck :-)

    Jacqueline @ TAPAS Team

  • Sandeep Menon commented
    June 25, 2018 05:57


  • Susanne Forster (TAPAS team) commented
    June 26, 2018 12:53

    Hey Sandeep,

    we really like your idea.

    It would be great if you could share a video of your project with us!


    Best regards,

    Susanne @TAPAS team

You can read the official challenge FAQ here!